text:
Talk:Weather forecasting

Statistics/history
Hello :) Is there any page containing areal statistics of temperature and weather from past years and months? I'd like to compare the usual weathers around the world --Gxojo 17:43, 5 Mar 2005 (UTC)

Expansion
Hello. Good stuff. I think a subject as important as this merits further expansion of this article. For example, sections could be added under the following headings:

The dominance of human interpretation of observational data, or extrapolation of observations into the future. How NWP has relatively low skill in this time range due to lack of resolution in model and data assimilation system. Future improvements possible due to mesoscale data assimilation. The idea that at short range you can expect to predict smaller scale features with skill whereas at long range you don't expect to be able to do so. The increasing dominance of NWP in forecasts. The concept that at increasing range you can only expect to predict larger scale features with skill and must give statistical forecasts of smaller features (e.g. forecasting "scattered showers" rather than giving forecasts of individual shower clouds). The benefit of using ensemble forecasts in this timeframe. Also, a more rigorous description of the forecasting system might be useful.
 * Nowcasting and very short range forecasting (0-6hrs)
 * Short range forecasts (up to 3 days)
 * Medium range forecating (3 to 10 days)
 * Long range forecasting (beyond 10 days)
 * Seasonal forecasting
 * Forecasting system
 * Observations + Data assimilation -> Analysis
 * Forecast made from analysis using principle of determinism whereby the future state of the system can be predicted by knowledge of the current state of said system.

ALTERNATIVE WEATHER FORECASTING

It would be instructive for someone to add a discussion of Irving P. Krick and Harry Geise and their attemtps at long-range weather forecasting using non-standard techniques. I believe that Krick was Dwight Eisenhower's lead forecaster for the Normandy invasion, and Giese was a popular and legendary forecaster in the San Francisco Bay Area and KCRA TV in Sacramento for many years. The weather bureau hated him but he was much more accurate than they.

When discussing alternative forecasting it might be smart to decrease the size of the section discussing the process that pilots go through to get a diagram for the weather. It goes off on a tangent a little too much with respect to the other topics. Although an interesting topic, it diverges from the main idea that is discussed with the different types of weather forecasting. 108.41.137.18 (talk) 16:01, 9 June 2020 (UTC) SK

RCA

-- geodynamo 08:59, 16 Jun 2005 (UTC)

Restructuring
OK, I've done a bit of restructuring. I hope nobody minds that I have changed it quite a bit. I tried to keep most of the original content in there, but added lots and re-arranged things. I think it is more up to date now about what actually goes on to produce a weather forecast these days. There's still plenty more that can be added. The history section in particular is a bit sketchy.geodynamo 20:19, 24 Jun 2005 (UTC)

Sorry, but I removed the section headings because they gave the impression that the text of the whole of the remainder of the article came under the second section heading, whereas it actually refers only to a little text which follows it.

I can see what you're trying to achieve, and the bulleted list is my attempt at another way of doing this.

--Trainspotter 08:36, 30 Jul 2003 (UTC)

 * Yeah, that's better. I was just trying to structure it a little better. Nice job! :) Dysprosia 08:43, 30 Jul 2003 (UTC)

Grammar
Could there be a comment on...the interesting grammar that we...see on forecasts, such as numerous periods everywhere in pl...aces that don't seem to make...sense. Please tell us...why! CoolGuy 05:19, 22 Septe...mber 2005 (UTC)

Weather forecasting vs. Meteorology?
I'm having a hard time understanding what the difference is between this article and Meteorology, which appears to be about the same subject. Is there some reason these are two separate articles with a fair amount of duplicated content? If so, what is it? If not, should these articles be merged? -- Foogod 21:22, 30 December 2005 (UTC)

 * I disagree that there is more than a superficial amount of duplicated content between the two articles, there is no more that is need to briefly explain forecasting in the meteorology entry. Forecasting is a subtopic of meteorology. Forecasting is only concerned with what will happen in the future; Meteorology is concerned with any measurable aspect of the weather, past, present or future. However, I do agree that the whole weather topic leaves something to be desired. I have monkeyed around with it in the past, but it still doesn't work right. It needs a proper review I think. nick 20:32, 6 January 2006 (UTC)

 * Weather forecasting is a method to understand the state of the earth’s atmosphere, mainly concerning its effects upon life and human activities. It consists of short-term (minutes to days) variations in the atmosphere. Weather forecasting can mainly be done with the help of parameters such as temperature, humidity, precipitation, cloudiness, visibility, and wind.

Meteorology is the scientific study of the earth’s atmosphere, including both land and oceans. It comprises of fundamental topics such as the composition, structure, and motion of the atmosphere. This study helps to understand and predict atmospheric activities. The significant difference between the two is that weather forecasting predicts the state of the earth’s atmosphere, and meteorology is the scientific and in-depth study of that state. — Preceding unsigned comment added by Williamliamjones (talk • contribs) 11:27, 12 January 2022 (UTC)

strange expression
in the first paragraph it isn said that humans have been predicting weathr informally for ob - a rather strange expression Electrolaser89 (talk) 12:29, 17 January 2010 (UTC)

What Happened to my Edit
Hello: I am new to Wikipedia. So first thing I did was check on the quality of the site by going to my area of expertise, weather forecasting. I have been predicting the weather for decades. The entry was on the whole good. As I was going through it, I noted that the website I have settled on as the best source for computer model output maps and which includes excellent "how to read" material for the inexperienced student of the topic, was not included in either the disertation or the links that followed. So I added it. The site in question is weather.unysis.com. There are complete current maps sets there for the six primary weathe computer models now in use in the United States. Within 24 hours my edits had been removed. I wonder who and why? Talk to me, pleas.

John Coleman wxguy@cox.net jcoleman@kusi.com

I have looked under the history tab and note that apparantly a user named Nikilet (?) removed my addition pegging it as commerical spam. Hardly. I have not relationship with Unisys and the site has no advertising or user fees. It is a pure an internet site as you will find. And it certainly is not any more commerical that The Weather Channel (Of which I am the founder) or Accuweather or Weather Underground which are all included. Please.

John

 * Hello John. I removed your edit. Before I explain why though I should explain some wikipedia etiquette tips that as a new user you won't be aware of. First, always put your comments at the bottom of talk page. Second, don't write titles in all caps; it looks like you're shouting. Third, it is a good idea to register for an account if you intend editing. It can make things much easier, many other editors (like me) will err on the side of removal if an anonymous edit is of dubious quality.

 * Now, I removed your edit for several reasons. First, you were talking largely about a commercial weather forecasting company. This article has historically been plagued by constant additions of non-relevant commercial links, so the addition of what looked like another was hardly surprising to me. Secondly, there were several spelling and grammatical mistakes, which only enhanced my first impression. Thirdly, your opinion of unisys as a good source is just that, an opinion. "Point of view (PoV) has no place in wikipedia" is a mantra you will hear repeated everywhere round here. Finally, as an encyclopedia, contributions should do the explaining for the reader, not just point him to another source.

 * Now I've explained why, I will say that this article does need some explanation of weather charts (I'm sure there used to be some here) and perhaps even an small explanation on how to read them (though that might be better as a new article). Please go ahead and re-edit, but if possible try to avoid mentioning unisys directly. It is ok to link to them to illustrate a point, but not simply "as a good source for weather". As this is your area of interest, I have to say that the weather topic is a bit fragmented. If you haven't already, I suggest you look at the weather and meteorology articles as well the many topics linked from there. They often contain information that you may feel should lie elsewhere.

 * Cheers nick 19:58, 6 January 2006 (UTC)

 * To your second comment, I personally object to all the commercial organisations you name being listed, though other editors have other ideas. As an aside, as a non-american weather professional, I don't agree with your opinion of unisys. They only show large scale maps and only of the US. There is definitely some useful information there however and an explanation of how to read weather maps is definitely missing from wikipedia. nick 20:04, 6 January 2006 (UTC)

Nick, Clearly you are the boss of all matters so I will not try to make anymore edits, but I will correct one point in your post above. The unisys site provides the AVN for the US, Europe, Eastern Asia, South America and Austrailia, the MRF for all of the previous sectors plus a northern hemisphere view and the ECMWF in US and Europe views.

John Coleman

Nick,

A apologize for my return to this discusion, but after thinking about it, I do want to add another comment. It is relative to your statement "Finally, as an encyclopedia, contributions should do the explaining for the reader, not just point him to another source." I think it is well to reconsider this position. In the 21st century, internet world, the entire web is an encyclopedia of sorts. I see Wikipedia as a very worthy effort to provide basic and detailed, unbiased, well organized educational material. I salute that. I came here to try to benefit from it. However, to put the entire graduate level course in the weather forecasting subset of meteorology into this on line book would be an overkill. After a solid introduction and basic education on the topic, I think providing links to further an interested informal student of the topic to further study is the correct approach. Allow me to give you another link idea to illustrate. Here in the United States, the National Weather Service (Federal government forecasting agency) has over the recent three years produced a truly outstanding internet web network for meteorological information and forecasts. An each of the more than 100 forecast offices around the nation, the forecaster on dury writes a forecast discussion once every four hours and posts in on the web. These discusions are highly educational for the novice, introducing and explaining the interpretation of the model output, how it has been modfied for the current forecast and introducing important local atmospheric effects. There also links to the NWS Glossery which is a wonderful educational tool. To refer readers to Weather.com or Accuweather and not to the NWS and Unisys is a major error. And to not link for futher learning to resources that the professionals in the field kn know are very worthwhile is poor thinking, in my opinion. Fifty years ago hard bound encyclopedias were self contained and left the reader to fend for themselves in further study. We do not have to do that in the digital age and in my judgement we should provide links...many of them. We can and should debate what links are worthy, each contributing the knowlege of his/her experience, and someone such as you should have the final say, but be hostile to any links I think is wrong.

Excuse my disertation, but the rejection of meager effor to contribute set my mind into motion and I had to put my thoughts into written word for your consideration.

No personal offense intended.

My best,

John Coleman

 * Hey John, I am certainly not the boss! There are several dozen people on here that know more than me about weather, and several thousand that have more experience than me of the way that wikipedia works. You are certainly right that putting an entire UG course on here would be overkill, but in my experience most UG courses can be summarised in a few paragraphs (and would have saved me a lot of time if they had been :)). I think you misunderstand my objection to links. I (and wikipedia) am certainly not against links per se, they are of course the foundation of the internet and the basis of all websites, including this one. My objection was to references to specific companies in the text of the article and the associated link below. Looking again at the list of links, a link to Unisys would not be out of place there.

 * The NWS/NOAA is by far the best resource on the web for weather information. I personally think they should be referenced a lot more on here. There are enormous gaps in the coverage of weather on wikipedia and weather maps certainly appears one area that is lacking completely. Please do not see my (or anyone else's) removal of your edit as a rejection; more a recommendation to consider it more carefully :).

 * No personal offense is taken. Wikipedia has a completely horizontal structure; no-one supersedes anyone when it comes to contribution. It all works on a numbers basis; if I hadn't removed your edit someone else would have done. I would encourage you to put back in the information you wish, if in slightly different format. nick 23:47, 6 January 2006 (UTC)

 * For what it's worth, I took a look at the weather.unisys.com site and several of the other sites already listed there, and it does seem to me like it's not a bad site to add to the list of links at the bottom. I'm not sure it necessarily warrants mention in the article text itself (particularly since it has some limitations that nick mentioned), but it probably didn't warrant removal from the links, so I've re-added the site to the links portion of the page.  I've also attempted to go through and add some indications about the type of information that appears to be available at each of the sites so that people can tell a little better what the differences are and where to go if they're looking for particular things (this was only based on a cursory examination of each site, though, so I might have missed something, feel free to correct me).  I also reordered the list a bit to try to put some of the sites that seemed to have the most detailed information (as opposed to just "sunny with a chance of showers" info) at the top, as they seemed the most relevant to an encyclopedia article.

 * Oh, and John, welcome to Wikipedia, and thanks for the contribution :). Please don't be put off by this sort of thing happening sometimes; it's just the nature of the medium that there are sometimes misunderstandings and differences of opinion that result in a lot of back-and-forth with edits every so often.  Usually it can all be worked out over time with a bit of discussion and collaboration, as more people provide their input.. -- Foogod 00:22, 9 January 2006 (UTC)

 * I agree with John about Unisys. Their weather-based output is in fact not commercial, even though Unisys is a commercial company.  As a historical note, Unisys was responsible for building some of the USNWS NEXRAD systems.  I believe there is an agreement for free access to Unisys-weather for US government employees and public access guaranteed (maybe), it seems like I saw that somewhere... And it is not POV, its humor.
 * Besides, I take good as meaning just that good. Its not POV, but applied fact through years of trial and error, considering the "Point of View" of Unisys. On an English wiki-article, it is not wrong to quote sources from US, UK, Australia, Canada, or others...
 * Yes, it is world accessible, but there is a limit. Hard Raspy Sci 03:37, 16 January 2006 (UTC)

TV Nova's only relation with Weather forecasting was, that it broadcasted a "nude weather reports" programm. That's not a sufficient reason to be listed in a serious weather article. That's why I removed it. J. 23:12, 15 July 2006 (UTC)

How accurate is weather forecasting?
Surely there have been methodologically valid studies assessing the accuracy of weather forecasts promulgated by government agencies. If weather forecasting is a science, what are the accepted standards for judging whether a prediction model is successful, and do practitioners today achieve that standard? For any given timeframe (e.g. a three-day forecast), how much more accurate is the science of weather forecasting in 2006 than it was in 1956, for example? A Google search turned up this article, but surely there are other sources available that assess the predictions of weather forecasters on a scientific basis? --Mathew5000 22:16, 4 June 2006 (UTC)

The Editors of this article seem wholly obsessed with saying how good weather forecasting has become, but have not given any justifcation! As the above user has stated, why is there no reference to tests of accuracy? One example from the UK shows that forecasters have a long way to go. In the Spring of 2007, they predicted a long hot summer, but we have had a very wet summer so far. No sign of any apologies or explanations from the UK Met Office. Peterlewis 15:57, 10 July 2007 (UTC)

Is anyone listening out there re: my query about accuracy of forecasting? Surely there must have been surveys of forecast accuracy, which is just blandly mentioned in the article by saying that it is less accurate as time goes by. Peterlewis 20:18, 22 August 2007 (UTC)

 * Weather forecasts are up to a week, perhaps 2 at a pinch. Seasonal forecasts are different. Text-based forecasts are near impossible to validate meaningfully. Model forecasts fields can be objectively shown to have improved William M. Connolley 21:34, 22 August 2007 (UTC)

 * Okay, so forecasts are up to a week, but that doesn't say anything about their accuracy. In the opening part of the article, it says that the farther the predicted time is in the future, the less accurate they get. So does the accuracy for a forecast for 2 weeks from today go towards zero? JohnnieDanger (talk) 19:58, 11 December 2009 (UTC)

Unfortunately weather forecasting has changed dramatically in the last twenty years and not for the better. The addition of computer models and satellites in local television broadcasts has created a level of confidence in accuracy that is not reflected in the evidence. Global Warming has introduced politics into every single aspect of weather forecasting such that politicians and broadcast producers are often directing meteorologists as to what information is provided to the public. Finally Internet based forecasting is often provided on a layered subscription basis with information being omitted intentionally in order to generate revenue thereby skewing the accuracy of reported forecasts based on financial objectives.

What can Wikipedia do in addressing the clear problems with weather forecasting today? Unfortunately nothing. As has been said many times, Wikipedia is neither commercial nor political and is loath to be involved in either, lest we become just another pay to play Internet resource.

Weather Forecasting will continue to become more and more politicized and commercialized, as the primary objective is not the pursuit of accuracy but rather establishing and following a particular agenda.

I will be starting a six-month analysis of weather forecasting by local and regional meteorologist to establish the level of accuracy and hope to publish by the end of the year.

The most negative effect of the new weather forecasting paradigm is what I’m seeing here in Lake County Florida, which was guaranteed 100% to receive at least tropical storm force winds and rain. Even people, who would normally regard the meteorologist and the technology used by them as reliable, are now referring to them as clueless and never intend to rely on them again.

That is a scary prospect for a state that has severe weather as frequently as any state in the Union. Wdhowellsr (talk) 19:38, 19 August 2008 (UTC)

I too, am concerned that this article cites no scientific studies of the accuracy of weather forecasting. --RedHouse18 18:07, 14 January 2009 (UTC) —Preceding unsigned comment added by RedHouse18 (talk • contribs)

Same here! I really would like to know more about forecast accuracy. There must be studies! Like, average temperature in a 3-day forecast was correct at X % of the times, or something like this. JohnnieDanger (talk) 19:58, 11 December 2009 (UTC)

When it comes to weather forecasting accuracy, longer-range forecasts are less accurate. Data from the National Oceanic and Atmospheric Administration suggests a seven-day forecast can only predict the weather about 80 percent of the time. A five-day forecast can correctly predict the weather about 90 percent of the time. However, beyond ten days, a prediction is only right about half the time. But in modern times, the combination of AI and ML technologies has helped the accuracy rates go higher. These technologies use data from the past and combine them with the present data and satellite imagery and sensors, which produces a higher accuracy percentage. Forecasting the weather may have been a manual process in the past, but with new technologies emerging every day, it has become easier to generate forecasts with better accuracy. — Preceding unsigned comment added by Williamliamjones (talk • contribs) 11:38, 17 January 2022 (UTC)

Closing in on GA class/inline references still needed
All you need to do is add a reference section with relevent references, and this article would be B. Thegreatdr 11:52, 24 October 2006 (UTC)
 * That fell on deaf ears. I've started adding references.  Thegreatdr 19:57, 16 February 2007 (UTC)

 * This article has become quite good over the last few months, but inline sourcing needs to be added per wikipedia's guide of style. Once this occurs thoroughly within the article, it can be submitted for consideration as a good article.  Thegreatdr 20:24, 16 February 2007 (UTC)
 * Still needs more inline references, preferrably one per paragraph, if we're going to submit this article for GA. Thegreatdr 01:12, 16 April 2007 (UTC)

This article is halfway there. More inline references are needed in order to submit it to GAC. Thegreatdr (talk) 13:26, 18 January 2008 (UTC)
 * We're nearly there. A couple links and some slight expansion of the marine portion and reworking of the lead, and the article will be submitted for GAC.  Thegreatdr (talk) 15:56, 26 May 2008 (UTC)

someone has insert a incorrect remark
look at the first line of the article Arttic00 17:42, 7 November 2007 (UTC)

Removal of excessive links
I really feel that it is not necessary to have such a list of commercial organisation which provide weather forecasts. Wikipedia is not an internet directory. Plus wikipedia is not the place for advertising. Also all the external links should be in the external links section so the article is consistent with other articles.--Benjaminevans82 (talk) 00:33, 8 December 2007 (UTC)
 * We have far too many external links. They will need to be trimmed back in such a way as to not violate NPOV.  This article will not make GA if all these links remain.  Thegreatdr (talk) 13:28, 18 January 2008 (UTC)
 * I removed another batch of external links, this time including extraneous NOAA links. Thegreatdr (talk) 15:55, 26 May 2008 (UTC)

Good Article Review
Thegreatdr (talk) 00:08, 28 May 2008 (UTC)

Pull-quite in "History"
The Template:Cquote in the middle of the history section seems out of place. I would suggest removing it. Thoughts? Farside6 (talk) 04:55, 25 June 2008 (UTC)
 * I removed it. At some point, it must have made sense for that quote to be there.  After all the edits, it no longer does.  Thegreatdr (talk) 12:09, 25 June 2008 (UTC)

Weather forecasting (marine)
A new article Weather forecasting (marine) should be made that describes stand-alone weather forecast devices for use at sea (eg using radiofax, rtty, navtex). Also mention the Elector SDR Marine weather receiver which is a low-cost, open-source receiver (might be useful for houseboats of people in developing world)

Also, does maritime weather forecasts (thus forecast for eg certain areas in the middle of the ocean) exist trough the new internet-based media (RSS, podcasts, weather.com, ...). Could be used if satellite dish/access is present on boat —Preceding unsigned comment added by 81.246.148.68 (talk) 14:23, 22 March 2009 (UTC)

Earliest weather forecasts over media
"Radio weather forecasts date to 1923, when E. B. Rideout began broadcasting in Boston. Televised weathercasts were first aired on the Weather Bureau Dumont Network in 1947 by James M. 'Jimmie' Fidler."

Worth a mention? Better at Radio broadcasting/History of television? Mapsax (talk) 20:01, 3 March 2010 (UTC)

Accuracy
What level of accuracy at any given time horizon can currently be achieved, using what techniques? -- Beland (talk) 02:51, 24 October 2010 (UTC)
 * To some degree, this has been addressed in the overhaul of the numerical weather prediction section. Thegreatdr (talk) 18:21, 2 January 2011 (UTC)

History
This is illuminating but stops short of explaining when and how each piece of information was developed. For example, in the Three Men in a Boat, the Englishman related reading the paper with "fronts" moving across Europe. This is fairly sophisticated IMO. And no, no history there either. Student7 (talk) 01:48, 6 October 2011 (UTC)

Weather Forecasting
The weather  forecasting  is  the  application of  science  and  technolgy  — Preceding unsigned comment added by 216.109.12.254 (talk) 15:15, 18 November 2011 (UTC)

Weather forecasting uses science and technology to forecast atmospheric conditions for a certain period over a specific location. In the past, it was primarily focused on variations in barometric pressure, existing weather patterns, and sky state or cloud cover. Still, in recent times, it is done using an amalgamation of data from the past, satellite imagery, and most importantly, AI technologies for accuracy. Weather predictions are created by gathering objective data about the actual condition of the atmosphere at a particular location and using meteorology to predict how the weather will behave in the future. There are various uses of weather forecasting in day-to-day life; it can be as simple as deciding whether to take an umbrella with you on your work or to determine your outfit. It can also help various sectors like agriculture and farming, logistics, aviation, among others, for their operations and smooth functioning. Weather forecasting is crucial since it also helps determine the future of climate change. It helps to monitor climate patterns, and its insights can help mitigate its risks. — Preceding unsigned comment added by Williamliamjones (talk • contribs) 11:34, 17 January 2022 (UTC)

Messed up intro section
I apologize if I'm not doing this correctly (I'm not a regular contributor and I'm not acquainted with coding and etiquette) but the first section of the weather forecasting page is jacked up. Looks like someone cut and pasted indiscriminately in a few places. Nonsense words, a sentence starting in the middle, etc. If someone who works this page regularly could take a look at it and see what happened, that would be great. Mattvsmith (talk) 09:05, 27 March 2013 (UTC)

Being bold...
but not too bold I hope. I have hacked out of the article completely a list of types of models. These are very generic and not specific to weather forecasting and were presented without any context. I'm happy to talk about this though. I'd also like to cut the section How models create forecasts out almost completely. It is covered much better in the Numerical weather prediction article. I think that this article should have a short explanation in the section Use of forecast models. This would probably be a little too bold to do without asking for input so please tell me what you think.--NHSavage (talk) 21:56, 9 February 2014 (UTC)

Older definition of weather prediction
/there are some semantic issues though/

The probability of the occurrence of a weather phenomenon (e.g. precipitation) is the expected value (of that phenomenon occurring) of a large number of virtual outcomes, for certain periods of time (quanta of time) and the amount of a specific measurable effect of that weather phenomenon (over a threshold) — Preceding unsigned comment added by 2.84.222.127 (talk) 19:34, 16 August 2015 (UTC)

Forecast skill
I wanted to add a link to forecast skill (which I just cleaned up) and there was no appropriate section (what discussion exists seems to be subordinated to specific techniques, which doesn't rub me right) so I added a thin top-level section. My vote would be to expand this section, poaching existing discussion, but others might prefer to fold this into the existing subordinated presentation. — MaxEnt 02:03, 11 December 2016 (UTC)

 * @MaxEnt, has it already been expanded? 2600:6C5E:3800:187E:8896:A14A:6863:7143 (talk) 20:30, 25 July 2023 (UTC)

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24-hour daily weather period definition/shift
The article currently says:
 * "The low temperature forecast for the current day is calculated using the lowest temperature found between 7pm that evening through 7am the following morning.*ref*Weather Channel - *feedback.weather.com/knowledgebase/articles/32098-weather-com-is-the-low-before-or-after-the-high Calculation of Low Temperature Forecast]*/ref* So, in short, today's forecasted low is most likely tomorrow's low temperature."

This confusing and important subject needs more attention. Most sources of overnight low temp predictions are frustratingly vague about the hours covered by the prediction. The article text WC link re 7pm-7am is dead. (We need a good link to a better source about this.) How true is it? How general is it? In different countries? What happens when the low temp is not actually within this 12 hour period? Can we assume that all historical records use strictly midnight to midnight "days"? Which creates a confusing inconsistency between overnight low predictions and past records -- this is important enough to warrant a clear statement in this and/or other relevant WP articles... (Aside comment: many WP talk pages are over-aggressively archived by robots. Good to see this talk page stretching back over a decade still intact whole, have this feeling of community group work over time.)-73.61.15.24 (talk) 21:46, 15 January 2018 (UTC)

External links modified (January 2018)
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When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

Cheers.— InternetArchiveBot  (Report bug) 15:09, 22 January 2018 (UTC)

Weathermen, weather girls, weather presenters
Surely the people we see and hear presenting the weather forecast deserve at least a section in this page, if not their own page? There is huge public interest in this role (its history and societal significance) and these people, who may be professional forecasters, or have career paths that intersect with acting and celebrity - or notoriety: George Cowling, Michael Fish, Punxsutawney Phil, naked weather forecasters. See this Guardian article. 112.119.77.63 (talk) 17:45, 17 October 2019 (UTC)

"Trends in the skill of weather prediction at lead times of 1–14 days"
Could this be worked into the article? Mapsax (talk) 01:34, 2 February 2021 (UTC)

medieval weather prediction

 * https://physicstoday.scitation.org/doi/10.1063/PT.3.4724 for possible use in article. 2601:648:8200:970:0:0:0:1A5F (talk) 01:15, 10 April 2021 (UTC)

title: Talk:Weather forecasting


text:
User talk:Ryuch

Hello Cheol, welcome to Wikipedia. I hope you enjoy editing here and being a Wikipedian. You can learn more on the how to edit page. The naming conventions and style guide pages are also useful. There is a sandbox which you can use to experiment in. If you have any questions, see the help pages or add a question to the village pump. Angela

반갑습니다. soax 05:52, 4 Aug 2003 (UTC)

하나하나 배워가고 있습니다. 많이 도와주세요. Ryuch 14:21, 25 Aug 2003 (UTC)

Hi, where did you get Image:Baekjebronzecenser.jpg? If it is copyrighted, please listed list it on Votes for deletion, because we cannot take others' copyrighted material here. Thank you. --Menchi 04:27, 28 Sep 2003 (UTC)

I got it from Buyeo Museum website, I requested the permission to use. If they do not grant, I will list it on the list. Thanks. Ryuch

I just created images for deletion and moved your image there. Martin 21:52, 20 Oct 2003 (UTC)

Please explain your removal of the sentence relating to 日本海/東海 in the article South Korea. 感射합니다. --Ce garcon 04:51, 29 Nov 2004 (UTC)
 * I answered at Talk:South_Korea. Thank you. -- Ryuch 05:33, 29 Nov 2004 (UTC)

King names
Hi, Ryuch. Thanks a lot for all the work you've been doing, especially on Baekje. :-)

As far as the king names go, I think you're basically right: simpler is better. I've just been following the standards at Naming_conventions_(Korean), which were put up by User:Sewing. These standards state that the format should be King X of Y, where X is the ruler's name and Y is the kingdom's name. There hasn't been any discussion of these conventions that I can find.

The current Korean standards do follow Naming_conventions_(monarchs), which say that we should "pre-emptively disambiguate" the monarch's name by adding the name of the country. This makes sense in Europe, where you have King Charles of Spain, King Charles of England, etc. etc. But as you say, it isn't really necessary in the Korean context, where only a few names (Taejo, Taejong) have been held by more than one person.

I think we could make this change. Here's what I reckon we should do: 1. Start a discussion in Wikipedia talk:Naming conventions (Korean), to make sure there are no objections. Also mention it on Wikipedia talk:Naming conventions (monarchs) 2. If there are no objections, change the text of Naming conventions (Korean). 3. Move all of the articles to their new names (and change their text also). There are currently about 40 articles that would need to move. 4. Change all of the links in Rulers of Korea to the new format, so that anyone who adds a new article will give it the correct name. ... That's a lot of work, but can be done pretty quickly after step 1 (give it a week or two).

I'll go do step 1 shortly. As you say, simpler is better.

Cheers, and thanks again for your hard work! -- Visviva 03:46, 3 Dec 2004 (UTC)

WikiProject South Korean counties and cities
Hi again, Ryuch! Thanks again for your contributions. If you have time, perhaps you would like to help out with WikiProject South Korean counties and cities. It's an initiative with the goal of massively improving our coverage of South Korean geography. Feel free to discuss or change anything on the project page, too, it's still rather unfinished. Cheers! -- Visviva 04:51, 22 Dec 2004 (UTC)

Unverified image
Thanks for uploading the image I notice it currently doesn't have an image copyright tag. Could you add one to let us know its copyright status? (You can use if you release it under the GFDL, or  if you claim fair use, etc.) If you don't know what any of this means, just let me know where you got the image and I'll tag it for you. Thanks, Kbh3rd 05:14, 5 Jan 2005 (UTC)
 * Image:Expobridge.jpg

Need Help
Hi there, I need help, I just overhauled the Hanjin page, but I can't fix the little table on the right because I do not know what goes there. Can you fill it in correctly? WikiDon 08:21, 18 May 2005 (UTC)

Notice board
Hello again Ryuch! I haven't seen you around much lately. I hope you're doing OK. Anyway, I'm posting here to let you know that there is now a notice board for Korea-related topics. This board is a central place to discuss all matters pertaining to Wikipedia's coverage of Coreana. I hope you'll drop by and help the board to take shape. -- Visviva 15:01, 13 Jun 2005 (UTC)

Collaboration of the month
Dear WikiProject South Korean counties and cities member,

Starting this July, we will work to get one article as close to featured article status as possible. Please please please please please help! Below is the information message for this collaboration. Feel free to post it on your user page. Cheers! -- Visviva 06:42, 26 Jun 2005 (UTC)

Another one!
Dear Korean notice board member,

Starting this July, we will work to get one article as close to featured article status as possible. Please please please please please help! Below is the information message for this collaboration. Feel free to post it on your user page. Cheers! -- Visviva 06:42, 26 Jun 2005 (UTC)

Sea of Japan/East Sea
Hello! Currently, there is a vote over the name of Sea of Japan/East Sea in Korean contexts. If you are interested in voting, please go here. Kokiri 12:32, 20 July 2005 (UTC)

Hello again from WPSKCC
Hello Mr Cheol,

Please drop by the Nominations section of the WikiProject notice board (here) and vote or nominate your favorite town. I have gotten us started by nominating three counties and cities from the southwest, in the spirit of countering systemic bias. -- Visviva 13:23, 24 July 2005 (UTC)

Karasuk culture
A Blast from the Past. Are you agreed? Do you have better sources? --FourthAve 02:45, 22 August 2005 (UTC)

Usercategorization
You were listed on the Wikipedians/Korea page as living in or being associated with Korea. As part of the User categorisation project, these lists are being replaced with user categories. If you would like to add yourself to the category that is replacing the page, please visit Category:Wikipedians in Korea for instructions. Rmky87 15:09, 17 September 2005 (UTC)

User Categorization
You were listed on the Wikipedians/South Korea page as living in or being associated with South Korea. As part of the User categorisation project, these lists are being replaced with user categories. If you would like to add yourself to the category that is replacing the page, please visit Category:Wikipedians in South Korea for instructions. Rmky87 16:36, 17 September 2005 (UTC)

Your imjinwaeran article
Hi, I stumbled across your imjinwaeran article just now. I merged your article into the more informative Seven-Year War page. Just thought I would inform you, hope you take no offense.--A10203040 08:32, 11 January 2006 (UTC)

Hi
I put the image of the Baekje incense burner for a speedy deletion. I did this because even if permission was given by the museum there isn't any proof of that permission and the image has a fair use rationale. This image: has a creative commons license. I hope this is okay with you. Thanks for your time. Tortfeasor 07:42, 17 December 2006 (UTC)
 * I visited Booyeo National Museum and got the permission to use in Wikipedia. You could checkt it by asking to the museum. No problem to use in Wikipedia! But, if you have better image which has good quality image of the burner you could replace. You don't need to delete - Ryuch
 * R: Thanks for the reponse. I don't mean to step on any toes.  If you want to remove the tag, that is cool with me.  I figured that since we have a better licensed image we could remove the duplicate.  Thanks for your time.  Tortfeasor 21:56, 20 December 2006 (UTC)

Copyright problems with Image:Daejeonview.jpg
An image that you uploaded, Image:Daejeonview.jpg, has been listed at Copyright problems because it is a suspected copyright violation. Please look there if you know that the image is legally usable on Wikipedia (you may have to search for the title of the image to find its entry), and then provide the necessary information there and on its page, if you are interested in it not being deleted. Thank you. YooChung 07:21, 2 April 2007 (UTC)

Korean name review
Hi, the article Korean name is undergoing a Featured Article Review right now. As far as I can tell, it's the only Korea-related Featured Article, and I doubt it can survive the way it is now. I noticed you worked on this article before, so I hope you can help now, and maybe continue on to make one or two more Korea-related Featured Articles eventually. Maybe you can contact others who may be interested, since it's not getting much attention right now. Thanks. Chuniac (talk) 18:34, 14 February 2008 (UTC)

Why do you create the task force without discussion?
Suppose that Takeshima/Sea of Japan task force is created after people find your creation of Dokdo/East Sea taskforce? Wikipedia is not a place for political agenda even though the recent news regarding Japanese textbook controversy is a motivation for you to do this. However, as far as I've known, you have NOT participated in the past naming disputes or votes, so I'm wondering why you unilaterally decided to create the task force? I believe this is required for pre-discussion with members. --Caspian blue (talk) 10:05, 25 July 2008 (UTC)

MfD nomination of WikiProject Korea/Dokdo and East Sea
WikiProject Korea/Dokdo and East Sea, a page you substantially contributed to, has been nominated for deletion. Your opinions on the matter are welcome; please participate in the discussion by adding your comments at Wikipedia:Miscellany for deletion/Wikipedia:WikiProject Korea/Dokdo and East Sea and please be sure to sign your comments with four tildes ( ~ ). You are free to edit the content of WikiProject Korea/Dokdo and East Sea during the discussion but should not remove the miscellany for deletion template from the top of the page; such removal will not end the deletion discussion. Thank you. Caspian blue (talk) 17:46, 25 July 2008 (UTC)

Requested move
Cheol -- You may not have noticed that I relisted the projected move of Eulsa Treaty at WP:Requested moves#Current discussions/August 31. It is only prudent for me to alert all contributors in our discussion about changing the name of this article. Please consider Talk:Eulsa Treaty. On one hand, this can be construed as an unnecessary delay. On the other hand, this ensures the possibility of wider community input which may bring out any points-of-view which remain unstated or glossed over. --Tenmei (talk) 17:16, 1 September 2010 (UTC)

Mediation
I sought assistance here — Mediation Cabal/Cases/2010-10-04/Eulsa Treaty. I do not know what happens next. --Tenmei (talk) 21:13, 5 October 2010 (UTC)

 * Summarizing the so-called discussion which began at Talk:Eulsa Treaty in early August here:
 * A. In an attempt to help us start discussion, options were proposed here and refined here.
 * Leave it at its current name?
 * To Japan-Korea Protectorate Treaty?
 * To Japan-Korea Treaty of 1905?
 * To 1905 Protectorate Treaty?
 * Or what?; see the second paragraph of page Eulsa Treaty.
 * B. Valentim presented the results of a Lexis/Nexis search here. This supplements several Google searches.
 * In the many weeks of so-called discussion thread development, those opposing the move have either been unwilling or unable to present refutation or counterargument; and therefore, I propose we delay no longer. In other words, I suggest that there is a consensus to act now on the basis of the Lexis-Nexis search outcome. The time has come for this article to be renamed Japan-Korea Treaty of 1905. --Tenmei (talk) 19:35, 26 October 2010 (UTC)

Wahyudi
Hello this is Wahyudi from Wiki id ^_^ I also made some short Korea-related articles here. Regards 02Wahyudi (talk) 08:35, 4 March 2011 (UTC)
 * Hi, Wahyudi. I will have a look. Happy editing! --Cheol (talk) 06:11, 8 March 2011 (UTC)

Notification: changes to "Mark my edits as minor by default" preference
Hello there. This is an automated message to tell you about the gradual phasing out of the preference entitled "Mark all edits minor by default", which you currently have (or very recently had) enabled.

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Thank you for your understanding and happy editing :) Editing on behalf of User:Jarry1250, LivingBot (talk) 19:30, 15 March 2011 (UTC)

Signpost
Hi Ryuch,

I found the slides of your recent presentation about the Korean Wikipedia quite illuminating. Would you be interested in making them into a "Sister project report" for the Signpost? This is an irregular series that presents the basics of a Wikimedia project, its history, characteristics, successes and issues, and current (longer term importance) developments. Considering the Signpost audience (English Wikipedians and other Wikimedians), one can be brief about basics that are similar to other Wikipedias, but assume some interest for peculiarities that are unique to the project.

(You may have noticed that we ran a story concerning the Korean Wikipedia not long ago - based on a Foundation-l posting by PuzzletChung -, which appears to have gone down quite well with readers. But Sister project reports are intended to take up an entire section and have a larger scope, encompassing the whole project instead of one particular news item.)

If you are interested in presenting your project in such a Signpost report, one way to start would be to begin a draft in your user space. As you may know, the Signpost is published on Mondays. It should be sufficient to have a rough version of the story ready by Sunday early afternoon (UTC) before the intended publication date, to allow for subsequent (copy-)editing.

Regards, HaeB (talk) 21:56, 16 March 2011 (UTC)

Hello, HaeB! Thank you for the attention. It's great to publish about Korean Wikipedia on Signpost. I will start to draft a article but I'm not sure I can make it ready for next issue. You mentioned Sister project reports but I am not sure the coverage of Signpost. If it covers only English Wikipedia, you are right it's a Sister project. If it covers entire Wikipedia projects, it's not a Sister. What do you think? --Cheol (talk) 02:41, 18 March 2011 (UTC)
 * Great, looking forward to it! Yes, it doesn't need to be ready for the next (March 21) issue - one of the following weeks is fine too. It's just important to leave some time for refining and editing before the intended publication date.
 * The name "Sister project report" is indeed somewhat a leftover from the time when the Signpost was exclusively covering the English Wikipedia only. In a discussion last year there was consensus to widen the scope to all Wikimedia matters (that's when it was renamed from "Wikipedia Signpost" to "Signpost", to indicate that reporting about Commons and other non-Wikipedia Wikimedia projects is welcome too). But so far we kept the name, also since some sections ("Features and admins", "Arbitration report") still focus on the English Wikipedia.
 * Regards, HaeB (talk) 19:03, 18 March 2011 (UTC)
 * How about aiming for publication in the upcoming April 11 issue? I'll be happy to look over a draft or make suggestions. If you are on IRC, you can usually find us in the #wikisignpost channel on Freenode (,Webchat). Regards, HaeB (talk) 19:58, 30 March 2011 (UTC)
 * Sorry, too late. I lost your proposal already. But I have a news. On coming Saturday, Korean Wikimedian would gather to discuss founding a local chapter in Korea. After that meeting I will post a draft to be published on Signpost. --Cheol (talk) 07:38, 13 April 2011 (UTC)

Liancourt Rocks
Your most recent edit [//en.wikipedia.org/w/index.php?title=Liancourt_Rocks&diff=463816396&oldid=463804680] at Liancourt Rocks is in violation of the special editing rules that are in force for that article; see the top of Talk:Liancourt Rocks as well as the html comment at the top of the article itself. Please self-revert and discuss before making further edits. Fut.Perf. ☼ 12:23, 3 December 2011 (UTC)

Infobox Korean Film
I saw your ID on WikiProject and so I thought you might be interested in a debate at Template Talk on the topic of merging Infobox Korean Film into the generic Infobox Film category, deleting the Hangul/hanja/RR/MR information, or keeping it separate (as it currently is). I would appreciate it if you to contribute your thoughts or at least glance over it. The more people looking/thinking about it will give us better ideas as to what should be decided. Thank you. ₪Rick n Asia₪ 09:52, 13 October 2012 (UTC)

MfD nomination of User:Ryuch/Dokdo and East Sea
User:Ryuch/Dokdo and East Sea, a page you substantially contributed to, has been nominated for deletion. Your opinions on the matter are welcome; please participate in the discussion by adding your comments at Wikipedia:Miscellany for deletion/User:Ryuch/Dokdo and East Sea and please be sure to sign your comments with four tildes ( ~ ). You are free to edit the content of User:Ryuch/Dokdo and East Sea during the discussion but should not remove the miscellany for deletion template from the top of the page; such a removal will not end the deletion discussion. Thank you. Shrigley (talk) 21:13, 7 December 2012 (UTC)

안녕하세요
안녕하세요! I'm sorry to write to you like this but I saw your entry at the Wikimania attendees list and I am so happy that finally I see at least one person from Korea attending the conference, as I am learning Korean :)) I also saw your slides about kowiki and I think there are a lot of similarities between our Hungarian Wikipedia and kowiki, in terms of nature and behaviour of editors. Hope to meet you in Hong Kong, I hope we will have some time to chat! Kind regards, Teemeah 편지 (letter)  15:05, 21 June 2013 (UTC)

Hello, Teemeah. Nice to hear you are coming to Hong Kong. I hope I could meet Wikipedia editor friends from all over the world. It's unusual for me to meet a Hungarian who can speak Korean. See you soon in Hong Kong. --Cheol (talk) 10:11, 22 June 2013 (UTC)

Processes on bastion and Tools
I have noticed that you have several processes running on. This host is only meant to be used to log into hosts on the Labs network. The proper place to run bots & Co. is the Tools project which I have added you to.

To get started, check the help page and the migrating from the Toolserver page. You can also ask in our IRC channel at or send an e-mail to our mailing list labs-l@lists.wikimedia.org – thank you, and have fun using Tools! Tim Landscheidt (talk) 02:58, 1 August 2013 (UTC)

Thank you, Tim. It required me a few more steps to use the Tools server. Sorry to bother you, but you gave the information exactly what I wanted to know. My tool was migrated to tools-login, but still I am not sure it is the right server. --Cheol (talk) 04:35, 1 August 2013 (UTC)

Re
Annyeonghaseyo, Cheol-ssi! Thank you for your message. I just arrived back home :) I'm glad we could meet at Wikimania. :) By the way, I was thinking about nominating Heritage preservation in South Korea for FA or GA, what do you think? Kamsahamnida :) Teemeah 편지 (letter)  14:34, 16 August 2013 (UTC)

Nice to hear your safe travel. The article looks good for me. I would like to add some text if I can afford some time. Good luck. Cheol (talk) 01:04, 18 August 2013 (UTC)

Pending changes reviewer granted
Hello. Your account has been granted the "pending changes reviewer" userright, allowing you to review other users' edits on pages protected by pending changes. The list of articles awaiting review is located at Special:PendingChanges, while the list of articles that have pending changes protection turned on is located at Special:StablePages.

Being granted reviewer rights neither grants you status nor changes how you can edit articles. If you do not want this user right, you may ask any administrator to remove it for you at any time.

See also:
 * Reviewing, the guideline on reviewing
 * Pending changes, the summary of the use of pending changes
 * Protection policy, the policy determining which pages can be given pending changes protection by administrators. —  MusikAnimal talk 20:51, 26 November 2014 (UTC)

ArbCom elections are now open!
MediaWiki message delivery (talk) 08:53, 23 November 2015 (UTC)

FYI
I reverted your pointy edits to the [[Chinese influence on Korean culture article. There is currently a discussion of he MOS in question, and your view is clearly the minority one. But even if this was not the case, you should still not have altered a direct quotation. [[User:Hijiri88|Hijiri 88]] ( 聖やや ) 07:34, 18 June 2016 (UTC)
 * That's not related. Someone are debating or not. --Cheol (talk) 17:59, 18 June 2016 (UTC)
 * I pointed out to you an example of an article that ran against the current wording, but in accordance with the previous RFC and the current discussion's general consensus. You went to the page and radically altered the romanization system in use solely in order to make a point about the discussion we were having on the MOS talk page, and in the process you mangled a direct quotation.
 * Do you understand why this is inappropriate? If not, I will have to consider requesting that you be blocked from editing, as changing direct quotations to conform to (your interpretation of) Wikipedia's MOS, without indicating that the quote was altered, is unacceptable.
 * Hijiri 88 ( 聖やや ) 20:19, 18 June 2016 (UTC)

Notification of RFC for Korean MOS in regard to romanization
Hello! You contributed in some capacity to at least one of the recent discussions concerning romanization of Korean for historical topics. Should we use McCune-Reischauer or Revised for topics relating to pre-1945 Korea? If you are inclined, please contribute here. Hijiri 88 ( 聖やや ) 06:27, 6 July 2016 (UTC)

Dead Secret
Hey Ryuch, I am creating the video game Dead Secret under Dead Secret over the weekend and have changed your link from Dead Secret to Dead Secret (Novel) on User:Ryuch/famous books I hope you don't mind. Let me know if that is ok? D Eaketts (talk) 11:11, 12 January 2017 (UTC)
 * That looks good. But I don't remember why the list is under mine. --Cheol (talk) 11:33, 12 January 2017 (UTC)

Hmm, Strange how you don't recall that page. Anyway I will carry on with it, Hope you figure out what Wikipedian created that list? D Eaketts (talk) 11:45, 12 January 2017 (UTC)
 * Maybe, me. But I don't remember how I induced the list. I think I did some queries against the database on a machine of WMF Labs, but I lost the script. --Cheol (talk) 06:44, 17 May 2017 (UTC)

hi
Nice to meet you--Mangon vientiane (talk) 07:52, 27 January 2018 (UTC)

Nomination of Kyodong Elementary School for deletion
A discussion is taking place as to whether the article Kyodong Elementary School is suitable for inclusion in Wikipedia according to Wikipedia's policies and guidelines or whether it should be deleted.

The article will be discussed at Articles for deletion/Kyodong Elementary School until a consensus is reached, and anyone is welcome to contribute to the discussion. The nomination will explain the policies and guidelines which are of concern. The discussion focuses on high-quality evidence and our policies and guidelines.

Users may edit the article during the discussion, including to improve the article to address concerns raised in the discussion. However, do not remove the article-for-deletion notice from the top of the article. ∰ Bellezzasolo ✡  Discuss  22:47, 13 April 2018 (UTC)

Orphaned non-free image File:Pure in heart 112 wedding.jpg
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Speedy deletion nomination of Dasan Machineries Company
Hello Ryuch,

I wanted to let you know that I just tagged Dasan Machineries Company for deletion, because the article doesn't clearly say why the subject is important enough to be included in an encyclopedia.

If you feel that the article shouldn't be deleted and want more time to work on it, you can [//en.wikipedia.org/w/index.php?title=&action=edit&section=new&preload=Template:Hangon_preload&preloadtitle=This+page+should+not+be+speedy+deleted+because...+ contest this deletion], but please don't remove the speedy deletion tag from the top.

You can leave a note on my talk page if you have questions.

Best, Barkeep49 (talk) 15:02, 8 October 2018 (UTC)

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: User talk:Ryuch


text:
User:Ryuch

I'm RYU Cheol but my friends call me Cheol, my given name. I have been an editor on English Wikipedia and Korean Wikipedia since 2003. I live in Daejeon, South Korea. In my real life, I am a software engineer at a research institute.

I am an advocate of Wikipedia in Korea and involved in Wikimedia movement. I love and am ready to talk with non-Koreans who want to know about Korean Wikipedia and also with Koreans who want to know Wikipedia in general or in detail.

I was a member of the first term ArbCom on Korean Wikipedia. Now I am serving as an admin on KOWP and a member of the board of Wikimedia Korea.

If you can read Korean, proceed to my page at KOWP.

Chaekgeori

ko:사용자:Ryuch

title: User:Ryuch


text:
Daejeon

Daejeon is South Korea's fifth-largest metropolis, with a population of 1.5 million as of 2019. Located in a central lowland valley between the Sobaek Mountains and the Geum River, the city is known both as a technology and research center, and for its close relationship with the natural environment. Daejeon serves as a hub of transportation for major rail and road routes, and is approximately 50 minutes from the capital, Seoul, by KTX or SRT high speed rail.

Daejeon (along with Seoul, Gwacheon and Sejong City) is one of South Korea's administration hubs. The city is home to 23 universities and colleges, including Korea Advanced Institute of Science and Technology (KAIST) and Chungnam National University, as well as government research institutes, and research and development centers for many chaebols such as Samsung, LG, mostly located in the city's Daedeok Science Town.

Occupied by humans since the Stone Age, Daejeon was historically a collection of small riverside villages. Though the area had varying degrees of strategic importance depending on the period in history, it was largely undeveloped until its use as a rail hub from the early 1900s, during the period of Japanese occupation. From the 1980s, multiple national administrative functions were moved from Seoul to Daejeon, most of which are now located in the Daejeon Government Complex, resulting in another population increase. The city was a sub host for the 1986 Asian Games, hosted the Expo 1993, the International Mathematical Olympiads in 2000 and will be the main host city of the 2027 Summer World University Games, and was elevated to the status of Metropolitan City in 2005.

Daejeon is situated in a lowland valley with three major rivers, all of them eventually flowing into the Yellow Sea by way of the Geum river. The city is surrounded by several small mountains, and is located approximately 170 km south of Seoul and 290 km north of Busan, and 70 km east of the Yellow Sea. Daejeon experiences a monsoon-influenced, four-season climate with wet, hot summers and drier, cold winters.

History
Human beings first settled in the Daejeon region during the Stone Age. It was occupied and in use as strategic military ground in various times by people such as the Usul-gun of Baekje, Bipung-gun of Silla, and the Hoideok-hyeon, Yuseong-hyeon, Deokjin-hyeon, and Jinjam-hyeon. During the Joseon Kingdom period, it remained occupied by the Hoideok-hyeon and Jinjam-hyeon of Gongju Mokha. In 1895, most of the area was made part of Hoideok-gun and Jinjam-gun, excluding some parts that belonged to Gongju-gun.

The Daejeon area was historically known as Hanbat (한밭), a native Korean term for "large field", during the Joseon Dynasty. "Daejeon" simply means the same thing in Hanja. In the 19th century, Daejeon was also known in English as a part of Kung-tsiou, Gongju.

Historically, Daejeon was a small village without many residents. In 1905, the Gyeongbu Railway began operations from Seoul to Busan, opening a station at Daejeon. In 1926 under the rule of the Japanese government, the Honam Railway was built between Mokpo and Daejeon, transforming the latter into a major transportation hub. Because of its location and proximity to means of transportation, Daejeon grew quickly.

As railroads were laid under Japanese rule, an environment friendly to the Japanese was created, and many Japanese began to settle in Daejeon taking advantage of the opportunity. According to 1910 census data, 58%, or more than half of the 4,350 Daejeon population at the time, were Japanese. In 1925, 56% of the 8,861 people in Daejeon were Japanese. Therefore, Daejeon was one of the cities with great cultural influence of Japanese residents. For example, elderly people who experienced Japanese colonial era pronounce '단무지' (Pickled radish, danmuji) as '닥광/단광'(dakgwang/dangwang), '컵' (cup, keob) as '고뿌' (goffu) and '비닐' (vinyl, binil) as '비니루' (binilu). In addition, '우에시다리' (Uesidari), a representative team division game in Daejeon, was also created at this time and is believed to have been derived from the Japanese word '上(うえ, Ue)' meaning 'up' and the Japanese word '下(した, sita)' meaning 'down'. In 1932, the capital of South Chungcheong Province was moved from Gongju to Daejeon. During the Korean War, the city was the site of an early major conflict: the Battle of Taejon. Also during the war, the mass graves of civilians killed by South Korean police were discovered near Taejon and reported on by Alan Winnington in his famous anti-war leaflet "I Saw Truth in Korea". Embarrassed by the contents of the leaflet, the British government considered having him executed for treason, though instead decided to make him stateless.

Since then, changes have been made to the city's boundaries. Its official names have evolved, as well. Among the boundary modifications include one that effectively made the nearby town of Daedeok a part of the city in 1983. Then, in the late 1980s, Daejeon was elevated to the status of Special City (Jikhalsi), thus became a separate administrative region from South Chungcheong Province. In 1995, all South Korean Special Cities were again renamed as Metropolitan Cities, which is reflected in the current official name of Daejeon, Daejeon Metropolitan City (대전광역시).

In the 1980s, the Korean administration began moving various national government operations from Seoul to Daejeon, eventually opening the Daejeon Government Complex in 1997. Today, the national government offices in Daejeon include Korea Customs Service, Small and Medium Business Administration, Public Procurement Service, National Statistical Office, Military Manpower Administration, Korea Forest Service, Cultural Heritage Administration, Korean Intellectual Property Office, Korail, Korea Water Resources Corporation, Korea Minting and Security Printing Corporation and Patent Court of Korea.

The population of Daejeon increased dramatically as a result of the government center. With the construction of Sejong Special Self-Governing City in 2013 for the division of capital functions and balanced local development, many of the public institutions that had previously headed to Daejeon were moved to Sejong, and many public institutions in Seoul were also moved to Sejong. With the launch of Sejong City, large-scale development began, resulting in infrastructure construction and large-scale apartment complexes. Sejong is located immediately north of Daejeon, and Daejeon citizens began to outflow to Sejong. As of July 2020, there was net outflow of more than 100,000 people from Daejeon to Sejong.

Geography

Daejeon lies between latitudes N36°10'59" and N36°30'1" and longitudes E127°14'48" and E127°33'35" near the middle of South Korea. It is 167.3 km from Seoul, 294 km from Busan and 169 km from Gwangju.

Known historically as 'big field,' the city lies inside a great circle surrounded by several mountains, with Gyeryongsan National Park straddling the city border on the west, and the foot of the Sobaek Mountain range just beyond the city to the south and east. Three rivers run through the center of the city: Gapcheon (갑천), Yudeungcheon (유등천), and Daejeoncheon (대전천). These flow roughly from south to north, eventually joining the Geum River which borders the city on the northeast. The river changes direction after leaving Daejeon, turning to the southwest and eventually emptying into the Yellow Sea near Gunsan.

Climate
Daejeon has a monsoon-influenced, four-season climate that lies between the humid subtropical and humid continental climatic classifications (Köppen Cwa/Dwa, respectively), with slightly more mild temperature extremes compared to Seoul. Winters are cold and dry with monthly mean temperature of −1.0 °C in January. Summers are hot and humid with a monthly mean temperature of 25.6 °C in August. The heaviest rainfall during the year typically occurs from July through August during the Korean monsoon season.

Administrative divisions
Daejeon is divided into five political "gu" or "districts": Seogu (서구), Donggu (동구), Yuseonggu (유성구), Daedeokgu (대덕구), and Junggu (중구).

Demographics
Daejeon is the fifth most populous city in Korea, with 1,467,468 registered residents as of 2023. The most populous district is Seo District (473,851 residents), although the district lost 32,219 residents since 2006, it remains the most densely populated in the city at 4,960 inhabitants per square kilometer (4,960/km2).

As of 2023, the number of registered foreign residents in Daejeon was 21,949 (1.5% of the total population) with the largest representations being Vietnamese (0.5%), and Chinese or Korean-Chinese (0.2%). There are also smaller numbers of registered residents (0.1% or less in each case) from Uzbekistan, Mongolia, United States, Philippines, Indonesia, India, Japan, Thailand, Bangladesh, Nepal, Taiwan, Pakistan, Russia, France, United Kingdom, Canada, Germany, and Turkey.

Religion
According to the census of 2005, of the people of Daejeon, 21.8% follow Buddhism and 31.2% follow Christianity (20.5% Protestantism and 10.7% Catholicism).

Education
There are 23 universities and colleges in Daejeon, concurrently enrolling around 90,000 students and employing 4,000 professors.

Major public universities in Daejeon include:

Major private universities in Daejeon include:
 * Chungnam National University, a flagship national university established for the South Chungcheong province. Chungnam National University specializes in biotechnology, medicine, and the agricultural sciences.
 * Daejeon Chungnam University, a campus in the four-year Korea National Open University system.
 * Hanbat National University, a university that specializes in partnerships between industry and academia.
 * Korea Advanced Institute of Science and Technology (KAIST), the nation's first public research-oriented science and engineering institution. The university was ranked as the best Asian science and technology school by Asiaweek in 2000. KAIST has been internationally accredited in business education.

 * Mokwon University, a Korean Methodist institution.
 * Pai Chai University, founded in 1885, one of the oldest private universities in South Korea.
 * Woosong University, with a specialized curriculum based on international exchange, foreign-language, and IT education.
 * Hannam University, founded in 1956 by Christian missionaries, with a main campus in O-Jeong Dong (site of the historic Missionary Village), and a branch campus is in Techno Valley.

Specialized high schools and academies include:

 * Daejeon Foreign Language High School is a high school focused on foreign language teaching. The school provides language education of 7 majors including English, German, French, Spanish, Chinese, Japanese, and Russian.
 * Daejeon Science High School is a high school focused on teaching science.
 * Taejon Christian International School is an non-profit international school.

Research and development
Daejeon is known as the research and development hub of Korea. In addition to KAIST and the Institute for Basic Science, it is home to more than 20 other government research institutions, and various corporate research centers, mostly located around Daedeok Innopolis in Yuseong District north of the Gapcheon river.

Fields of research undertaken in Daejeon include telecommunications, nanofabrication, biotechnology, water, nuclear and hydro power, nuclear fusion, design, measurement technologies, mechanical engineering, fuel cells, aeronautics, new materials, robotics, new drugs, and environmental technologies. Daedeok Innopolis' membership includes 898 corporations, 35 government-invested and sponsored institutions; six universities, and 15 public organizations.Research institutes in Daedeok include the Korea Research Institute of Bioscience and Biotechnology (KRIBB), the Korea Atomic Energy Research Institute (KAERI), Electronic and Telecommunications Research Institute (ETRI), Korea Aerospace Research Institute (KARI), Korea Astronomy and Space Science Institute (KASI), Korea Fusion Energy Research Institute (KFERI), National Nanofab Center, Korea Basic Science Institute (KBSI), Institute for Basic Science (IBS), Korea Institute of Machinery and Materials (KIMM), Korea Research Institute of Chemical Technology (KRICT), Korea Institute of Science and Technology Information (KISTI), Korea Research Institute of Standards and Science (KRISS), Marine and Ocean Engineering Research Institute, Institute of Information Technology Advancement (IITA), Korea Institute of Geosciences and Mineral Resources, Agency for Defense Development (ADD), Korea Institute of Toxicology (KIT), Korea Institute of Oriental Medicine, Korea Institute of Nuclear Non-proliferation and Control, National Institute for Mathematical Sciences (NIMS), Korea Institute of Nuclear Safety (KINS), Rare Isotope Science Project (RISP), National Research Foundation of Korea (NRF), and the National Security Research Institute. Among the technology produced in Daedeok are ETRI's wireless communications systems CDMA, WIBRO, and DMB, KRIBB's nano biochips, KARI's KOMPSAT satellites, and NFRI's KSTAR nuclear fusion experimental reactor.

Daedeok is also home to 21 corporate research centers with global reach surrounded by an equal number of smaller firms. Some of the notable corporate research centers are Dongbu Advanced Research Institute (biotechnology, microorganisms and agrichemicals), GS-Caltex Value Creation Center (environmentally friendly products including substitutes for oil), Hanwha Chemical Research (biotechnology, electronics materials, catalysts, and nanotechnology), Honam Petrochemical Daeduk Research Institute (synthetic chemistry and petrochemicals), LG Chemical LTD. Research Park (lithium ion battery and polymer battery development), Samyang R&D Center (medical research and electronics), and SK Institute of Technology (petroleum-related research).

Public corporation research institutes such as Korea Electric Power Research Institute (hydroelectric projects and nuclear energy), Korea Institute of Construction Materials (authorized test agency for construction materials), and Korea Institute of Aerospace Technology (aerospace design, satellites, launch technologies) are also part of the Daedeok system.

On 16 May 2013, Daejeon was selected as the core of the International Science and Business Belt.

Besides a tire production facility, Hankook Tire has its main R&D centre in Daejeon.

Museums and arts centers
Daejeon is the home of multiple arts and culture complexes, mostly centered around the Daedeok area. These include:

 * Daejeon Museum of Art which hosts primarily technology-oriented modern and contemporary exhibitions
 * Daejeon Arts Center which is home to local music and theater groups including the Daejeon Philharmonic Orchestra
 * Laurent Beaudouin-designed Lee Ungno Museum, a large permanent collection of works by or related to the prominent Korean artist Lee Ungno
 * Expo Science Park, built on the grounds of the former international exposition (Taejŏn Expo '93) is home to the Institute for Basic Science and the National Science Museum, Korea's flagship science museum which features a main exhibition hall highlighting harmony between nature, man, and technology, as well as dedicated buildings related to natural history, future technology, biosphere, a children's science museum, and an astronomical observatory.
 * Geological Museum, belonging to the Korea Institute of Geoscience and Mineral Resources
 * Daejeon Citizen's Observatory which houses a 10-inch refracting telescope and is the first citizen observatory in Korea

Other arts spaces in the city include the six-floor Daejeon Artist House, performing arts center, and the Natural Ecology Center at Daecheong Lake.

Parks and nature
Daejeon citizens are recognized for their fondness of nature, with most mountains, hot springs, and rivers freely open for public use. Many of the city's modern-day traditions, festivals, attractions, and industries are linked in some way to important mountains, rivers, and forests.

Eight "beautiful sights" are designated by city government, including the mountains Sikjangsan, Bomunsan, Gubongsan, Jangtaesan, and Gyejoksan, the lake Daecheonghosu, as well as Yuseong Foot Spa, and Expo Science Park, which includes landmarks such as the Hanbit Tower and Expo Bridge. The Daejeon Hanbat Arboretum, built on the former parking lots of the World Expo, also holds the distinction of being the largest manmade arboretum in Korea. Overlooking Daejeon from the south, Bomunsan Mountain park was established as a park in 1965. The park contains water springs, trails, Buddhist temples, and some heritage sites dating back as far as the Bronze Age. Facilities include a nature healing center, outdoor concert hall, and Daejeon O-World, a theme park which includes Daejeon Zoo, Joy Land, and Flower Land. The park is home to 160 species of 600 animals, 17 rides and themed gardens including Sounds garden, Herb Garden, and Rose Garden.

Media
Daejeon is a provincial center for the television, newspaper and publishing industries. Major television broadcasting companies, such as KBS and MBC, have branches in Daejeon; Taejon Broadcasting Corporation (TJB) is a local television broadcaster based in Daejeon. Cable TV services are available in most apartments. Eight (8) channels of Mobile TV are provided with the digital radio channels. Several FM radio stations provide news and music on the air. KBS, MBC, TJB have their FM radio channels, there are Christian radio channels, FEBC and CBS, and traffic news channel TBN. Daejeon Ilbo is the major local newspaper which covers South Chungcheong province.

Festivals
Daejeon is home to both traditional folk festivals, and contemporary cultural celebrations. These include the Daejeon Science Festival, the Hyo Culture Root Festival, a Full Moon Festival, Yuseong Oncheon Festival, Geumgang Rojas Festival, Diku Festival, Gyejoksan Mountain Manbal Festival, Gyeonwoojik Women Festival, and various international food, drink, and music festivals throughout the seasons.

Sports
Daejeon is home to multiple professional teams and national and internationally active sports facilities. The Daejeon World Cup Stadium was constructed for the 2002 FIFA World Cup, hosting several games including the South Korea vs. Italy match in the round of 16. The facility is now the home of the city's football club. The Daejeon Hanbat Sports Complex was built in 1964, and was one of the host sites of the 1986 Asian Games, and also hosted preliminaries during the 1988 Olympic Games in Seoul. Today, with several of the facilities renovated, it hosts the city's professional baseball, K3 League football, and volleyball teams. The city is also home to LPGA golfers Pak Se-ri and Jang Jeong, and is the hometown of former New York Mets left-handed reliever Dae-sung Koo.

Football
The city is home to the K League 1 football club Daejeon Hana Citizen, playing home games at Daejeon World Cup Stadium, and the K3 League side Daejeon Korail, which plays home games at Daejeon Hanbat Sports Complex.

Baseball
The Hanwha Eagles of the KBO League were founded in Daejeon in 1985. They play home games at the Daejeon Hanbat Baseball Stadium, built in Busa-dong in 1964, with an iconic view of Bomunsan mountain in the outfield. The stadium was renovated and expanded in 2013, moving the outfield wall and expanding seating to 13,000.

Volleyball
The V-League men's volleyball club Daejeon Samsung Fire Bluefangs and the V-League women's volleyball club Daejeon KGC both play their home games at the Chungmu Gymnasium of the Daejeon Hanbat Sports Complex.

Transportation
Daejeon is a center of transportation in South Korea, where two major expressways, Gyeongbu Expressway and Honam Expressway Branch, and two major railway lines, Gyeongbu railway and Honam railway, are joined. Travel time between Daejeon and Seoul using the KTX high-speed rail system is about 50 minutes. The nearest airport is Cheongju Airport, about a thirty-minute drive north. Direct bus connections to Incheon International Airport exist.

Subway
One line, Daejeon Subway Line 1, of a planned five-line subway system has been operating since 17 April 2007 (partial operations on this line began on 16 March 2006). This subway line connects Daejeon Station, located in the original city center, with the more modern and more recently developed sections of this city, including Dunsan, where the city hall and a number of national government buildings are located.

Notable differences between the Daejeon subway and the Seoul subway include narrower cars, no doors connecting cars, four cars per train rather than ten, and storage space under the seats for use by passengers. Originally, plastic tokens for toll were read by a proximity sensor when entering the turnstiles, and then inserted into a slot when exiting. The design of the tokens allowed them to be used for advertising. The system now employs the T-money system, a rechargeable series of Smart cards and other "smart" devices used for paying transportation fares. Platform screen doors are installed in the subway stations.

Cycling
The name of the public bicycle in Korea is different for each region, and the name of the public bicycle in Daejeon is  '타슈(Tashu)' . '타슈(Tashu) is a name created using the Chungcheong dialect, and if changed to standard Korean, it becomes '타세요(Taseyo)'. Tashu is an unmanned rental public bicycle service operated in Daejeon Metropolitan City since 2008, and the basic rental fee is 500 won, and if one purchases a daily ticket, the bicycle can be used within an hour on that day.

Notable people

 * An Yu-jin, singer (Iz*One, Ive)
 * Kim Joon-ho, comedian
 * Do Ji-han, actor
 * Choi Sung-bong, singer
 * Chung Eun-yong, policeman and activist
 * Han Eun-jung, actress
 * Yoon Joo-hee, actress
 * Han Sang-hyuk, singer (VIXX)
 * Hong Jin-ho, television personality and former professional StarCraft player
 * Ivy, singer and musical actress
 * Kwon Sang-woo, actor
 * Lee Na-eun, singer and actress (April), born in Cheongju (청주). She moved to Daejeon before entering elementary school.
 * Lee Yoon-ki, film director
 * Lim Choong-hyun, footballer
 * Rhie Won-bok, cartoonist
 * Pak Se-ri, former professional golfer
 * Joon Park, artist
 * Ryu Su-jeong, singer (Lovelyz)
 * Shin Chaeho, independence activist, historian, anarchist, nationalist and the founder of Korean ethnic nationalist historiography
 * Shin Seung-hun, singer-songwriter
 * Song Joong-ki, actor
 * Chen, singer, dancer, model and member of (EXO, EXO-CBX)
 * Kyu Ha Kim, judoka
 * Baek Ye-rin, singer (15&)
 * Park Ji-min, singer (15&)
 * Jo Bo-ah, actress, model and host
 * Park Eun-ooh, singer-songwriter, music producer, vocalist and lyricist
 * Park Sung-hoon, singer (Enhypen)
 * Son Suk-ku, actor
 * Choi Jung-in, singer
 * Kim Woo-seok, singer (X1, Up10tion) and actor
 * FlaSh, StarCraft: Brood War and StarCraft II player
 * Paul Sun-Hyung Lee, actor
 * Kim Dong-hyun, singer (AB6IX)
 * Yeo One, singer (Pentagon) and actor
 * Kwak Dong-yeon, actor
 * Jeon Heejin, singer, member of girl group (Loona)
 * Lee Hae-in, figure skater
 * Kim Duk-soo, traditional musician

title: Daejeon