Talk:Monsoon trough

Assessment
Very high start, almost B-class. It needs some copyediting, and more on how the monsoon trough contributes to tropical cyclone development. Everything else is solid. --Core des at talk! 03:45, 24 September 2006 (UTC)

Why oceanic streamline graphics?
There's not a monsoon in sight in those graphics. Why are they there? Tmangray 17:55, 15 July 2007 (UTC)
 * The monsoon trough (ITCZ) is depicted by the convergence in the streamline pattern. This is now stated within the caption of the images.  Thegreatdr (talk) 21:17, 15 April 2008 (UTC)
 * Again, the monsoon trough is not identical to the ITCZ. There are no monsoons in midocean areas.  A monsoon is by definition a land-sea circulation.  Tmangray (talk) 06:50, 28 October 2009 (UTC)

Definition
By definition, ANY line pressure in a monsoon regime is a monsoon trough. To speak of THE monsoon trough then is erroneous, unless one is speaking of the ITCZ which merges into the Asian summer monsoon. The article is confusing in this regard. The relationship of the ITCZ to the monsoon should be mentioned, as should non-ITCZ monsoon troughing. Tmangray 18:09, 15 July 2007 (UTC)
 * It was mentioned. The article has been reworded to clarify any possibly confusion.  Thegreatdr (talk) 21:18, 15 April 2008 (UTC)
 * Although somewhat clarified, it remains somewhat confusing. A monsoon trough, for instance, does not necessrily involve the convergence of hemispheric winds.  The monsoon trough over Mexico may extend northward from the ITCZ without the ITCZ itself becoming continuous with the trough itself, akin to a standing tropical wave.  Another instance: the map inset shows the position of the ITCZ, not a monsoon trough, over the Pacific.  This imples an identity which is unsupported. Tmangray (talk) 17:02, 24 October 2009 (UTC)

Reassessment
Downgraded to start. The article is quite confusing and full of unexplained jargon, and doesn't clearly explain what the monsoon trough is. --Core desat 04:24, 9 August 2007 (UTC)
 * An attempt has been made the clarify the article. The only unexplained jargon I saw was vorticity, which is just jargon for atmospheric spin.  Hopefully the current wording has improved the situation.  Let me know if there is any more jargon that needs explanation.  Thegreatdr (talk) 21:19, 15 April 2008 (UTC)

Seasons ill defined
eg in start of 'Movement' section what does 'late summer' mean if you don't even define which hemisphere you're talking about. There's cultural bias here. People in the affected part of the world commonly talk in terms of different seasons like 'the dry season' or 'the hot season'. —Preceding unsigned comment added by 202.81.110.42 (talk) 03:53, 2 June 2008 (UTC)
 * It was meant to be broadly stated. Late summer means August in the northern Hemisphere, and February in the southern Hemisphere.  I thought I wasn't introducing a POV when writing the text in that manner.  Thegreatdr (talk) 15:30, 2 June 2008 (UTC)

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GA review

 * GA review (see here for criteria)

Overall, the article is generally good, but there are some issues that need to be taken care of. Thus, I've put the article on-hold. Good work so far, and good luck getting it to GA status. Juliancolton Tropical Cyclone  15:09, 3 May 2008 (UTC)
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 * Added additional clarification, and a couple references to the missing paragraph. You mention some of the sections are short.  What more would you like to see added that is missing?  I was worried I had gotten wordy with the article, because there are not many sources regarding the dynamics and behavior of the monsoon trough.  Thegreatdr (talk) 16:15, 3 May 2008 (UTC)
 * Alright, it's starting to look better. I'd like to see some more information regarding movement, and maybe some more about the depressions. Juliancolton Tropical Cyclone  21:02, 3 May 2008 (UTC)
 * Added more information, particularly to monsoon depression. The added information didn't bulk up the movement section very much.  I'm not sure I'm going to be able to find much else...but I'll keep searching.  Thegreatdr (talk) 22:18, 3 May 2008 (UTC)
 * Much better. I can safely pass GA. Good work! Juliancolton Tropical Cyclone

18:33, 5 May 2008 (UTC)

Challenge
I have looked at the source references and others on my own, and I wish to challenge the accuracy of the article, in particular, the identification of a monsoon trough with the ITCZ. This explains a lot of the confusion in the article. Tmangray (talk) 05:39, 4 June 2009 (UTC)
 * Reference 14 equates them as the same feature. This reference also equates them as synonyms for the same line of convergence in the tropics.  Intertropical front, Intertropical convergence zone, and monsoon trough all describe the same meteorological feature, it appears that the terminology preferred changes depending where you are in the world.  Thegreatdr (talk) 08:50, 4 June 2009 (UTC)
 * I have to agree with Tmangray. I read over the references, technically, ITCZ should be the name of the article, since Monsoon trough is a term that refers to only part of the ITCZ. --Funandtrvl (talk) 18:31, 4 June 2009 (UTC)
 * Reference 3, a glossary of terms issued by the World Meteorological Organization lists monsoon trough and ITCZ separately and makes no mention of identity. I believe confusion arises because the ITCZ is drawn into the Asian summer monsoon regime.  In actual usage, ANY trough line within the monsoon regime is a "monsoon trough", or at best, the principal trough line, which may or may not coincide with the ITCZ.  When the ITCZ is drawn into a monsoon regime (the broad thermally-driven low pressure area), it often becomes more diffuse and ill-defined. Tmangray (talk) 18:52, 4 June 2009 (UTC)
 * I undid the redirect and restored ITCZ and am currently updating the opening paragraph. --Funandtrvl (talk) 19:10, 4 June 2009 (UTC)
 * I believe the entire article as currently written is misleading. Moreover, it is largely superceded by the article on the ITCZ. Tmangray (talk) 22:41, 4 June 2009 (UTC)
 * I agree it's not that well written, though both articles should be kept. This article needs more info on "monsoon depressions", as referenced in the Australia part (#11), and more info on how it differs from ITCZ, especially in the S. Pacific and the W. coast of Africa. --Funandtrvl (talk) 23:26, 4 June 2009 (UTC)
 * The monsoon trough is the ITCZ at the west coast of Africa, that's not even in doubt. If there were two features near western Africa, surely someone would have noticed a persistent double thunderstorm band there.  The Southern Pacific Convergence Zone I'm not sure about (though I think it is considered a discontinuous part of the ITCZ), though the one in Brazil is not a portion of the ITCZ, as the ITCZ almost never sinks south of the equator in the eastern Pacific or Atlantic oceans per literature, even though it theoretically should.  I can dig up another dozen references mentioning the ITCZ and monsoon trough are interchangable terms, but I don't feel this will convince you that they are one and the same because you believe there is some subtle distinction.  I guess we'd need to investigate the Mei Yu front, SPCZ, and one in Brazil, to see if they are portions of the ITCZ or not.  Are those monsoon troughs?  Is the ITCZ a specialized version of the monsoon trough, with monsoon trough a more generic term?  I have yet to find literature to support that either.  Maybe this mess will force people to improve the ITCZ article, which was virtually abandoned this year, until the plane crash.  It definitely means this article can't go up for FA until this issue is resolved.  Thegreatdr (talk) 15:43, 5 June 2009 (UTC)
 * Yes, I agree, the MT is off the W. coast of Africa, I never said it wasn't (read comment above). What I was trying to say was that this fact needs to be explained better in this article, for the layman, like myself, and it definitely needs to be expanded before qualifying for FA status. I think adding to it what you are describing about the different names and reasons why the terminology differs around the globe would be a great enhancement to this article. The following diagram from the Atomoshere, weather and climate book shows the different CZs: figure 4.16, pg 158. Definitely, Monsoon trough, ITCZ, SPCZ need to be cross-referenced to each other properly, and there's room for adding a few more articles about the other fronts mentioned in the diagram, like ZAB, MF, etc. A point to consider: if each term is covered in the textbook separately, why wouldn't they be covered in separate encyclopedic articles? --Funandtrvl (talk) 17:35, 5 June 2009 (UTC)
 * I know of no scientific works which use the terms ITCZ and monsoon trough interchangeably. They are not identical except in instances where they are intertwined.  The usage is absolutely wrong for those parts of the ITCZ which are not part of any monsoon circulation,regardless of convective activity.  By definition, a monsoon is a land-sea dynamic system, thus there is no monsoon troughing of any kind involved with mid-oceanic convective clusters, for instance.  The article must be amended accordingly. Tmangray (talk) 23:06, 27 October 2009 (UTC)

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