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The very first sentence says "The troposphere is the best portion of Earth's atmosphere". I was wondering if the adjective "best" is not a somewhat unusual choice in this description? Thanks. Todd ( talk) 20:41, 1 January 2016 (UTC)
find surface area of troposphere
i believe the volume would be 11494.04032
V=4/3pie(r2^3-r1^3)
—Preceding unsigned comment added by 68.34.160.75 ( talk) 20:36, 22 January 2008 (UTC)
"copied from wikipedia:reference desk"
Why does temperature decrease with an increase in altitude (in the troposphere of course) ? I found a mention of it in Earth's atmosphere. It says the phenomenon is called expansive cooling but thats a red link. Jay 18:08, 16 August 2005 (UTC)
The red link should have pointed to Joule-Thomson effect (it does now). However, I don't think this is correct (the thermodynamics in that section of Earth's atmosphere look decidedly iffy to me), so I will try to do a quick explanation here. The troposphere is not heated directly by the sun: any radiation from the sun which can be absorbed by the atmosphere has already been filtered out in the thermosphere and (especially) the stratosphere. The troposphere is heated directly by the Earth's surface. The heating effect decreases as you move away from the Earth's surface, and so the temperature decreases. Anyone else want to fill out the vast simplifications I've made there? Physchim62 00:48, 17 August 2005 (UTC)
~Kash 72.227.74.110 00:45, 12 April 2007 (UTC) So the major gases presented in the Earth's troposphere are Nitrogen and Oxygen?
I am currently reworking the troposphere article and I feel that the tropopause article would be better as a section of this I will merge the contents from there. The draft is at: User:NHSavage/sandbox. Comments please.-- NHSavage 09:14, 25 February 2006 (UTC)
The scales of the atmospheric cross-section are way off. Although the caption makes a brief note of this, the figure really should be replaced with a better one with a) a linear or logarithmic vertical scale; and b) a line indicating the Earth's surface (rather than the globe of the Earth, which to some readers will suggest that the Earth's atmosphere is far thicker than it truly is).
I forgot to leave an "edit summary" for the changes that I made this afternoon. I added a lot of references, added a correct explanation of the decrease of temperature with height, and deleted some incorrect material. (For instance, the incorrect argument was given that rising air has to do work against gravity, which causes it to lose energy, and thus the temperature decreases. This is incorrect, because the work done by gravity is exactly balanced by work done by the buoyant force, if the atmosphere is in hydrostatic equilibrium -- the condition expressed by the displayed equation in the pressure section.)
There are still a lot of missing references and unsupported facts in the article.
209.131.85.201 20:00, 3 August 2007 (UTC)
This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 10:05, 10 November 2007 (UTC)
"As the air parcel expands, it pushes on the air around it, doing work; but generally it does not gain heat in exchange from its environment, because its thermal conductivity is low (such a process is called adiabatic). Since the parcel does work and gains no heat, it loses energy, and so its temperature decreases."
Since the process is adiabatic, how can the parcel be losing energy? —Preceding unsigned comment added by 91.104.19.246 ( talk) 16:41, 9 May 2010 (UTC)
the earth is very cool.it is made up of 4 different layers —Preceding unsigned comment added by 68.44.198.190 ( talk) 01:21, 12 September 2008 (UTC)
This article is about the troposphere, not the atmosphere. The graphs do not have sufficient resolution to display any meaningful information about the troposphere. Can we get some pictures that show properties such as temperature and compostion of the atmosphere from sea-level to say 20km altitude; and not to outerspace! So, I'm deleting the pictures, and starting over, I'll keep my eye open for something to upload or make one myself. THanks.-- Charlesrkiss ( talk) 16:01, 21 March 2009 (UTC)
An article on troposhere which does not have a single mention of the word "cloud" in it - really?
This link was on the page but now seems to be dead:
This article writes in Atmosperic Levels section: 1) Low Level is from zero to 2400m altitude 2) Mid Level is 1800 to 7600m altitude 3) Upper Level is the highest of the three level and starts from 850hpa and above.
The 3rd is a wrong statement compared with the first two because 850hpa surface lies approximately at about 1500 meters altitude, thus upper level starts below mid level which starts from 1800m altitude and ends to 7600m altitude. Upper level cannot be "the highest level" if starts below mid level.
National Weather Service Glossary defines "upper level" as "the portion of the atmosphere that is above the lower troposphere, generally 850 hPa and above." In the same Glossary is mentioned that "local cooling of the air in middle levels of the atmosphere (roughly 8 to 25 thousand feet), which can lead to destabilization of the entire atmosphere if all other factors are equal" not as a definition of a "mid level" but inside the definition of "mid level cooling". Obviously these two definitions of middle and upper atmosphere levels are not agree each other. Finally this Glessary does not define "Low Level" or "Lower Level" at all.
I think that National Weather Service Glossary is not an accurate Glossary and needs more work to define better the terms. Also the level of troposphere must be written in a better way in Wikipedia. -- 91.140.98.49 ( talk) 23:34, 5 June 2011 (UTC)-- 91.140.98.49 ( talk) 09:44, 6 June 2011 (UTC)
I generally agree with the comment above. The levels section is basically apples and oranges, and the sources used for Lower, Mid and Upper are talking about different things, and you can't suggest they're stacked this way in the troposphere. The Low and Mid level heights as listed generally correspond to the heights used for clouds, and High (not upper) clouds would be found above 7km or so (depending on latitude...) The term Upper Air usually refers to conditions away from the surface, above ca. 1500m, whereas the upper atmosphere is above about 85 km. The section is useless at best and misleading at worst. — Preceding unsigned comment added by 204.77.41.253 ( talk) 19:35, 7 September 2011 (UTC)
The section on composition doesn't actually state the elemental composition, or contain the words 'oxygen' or 'nitrogen'. That to me seems like a serious deficiency. — Preceding unsigned comment added by 206.45.162.228 ( talk) 21:17, 7 December 2013 (UTC)
May we have some consistency about where the tropopause can be found? The articles on the Stratosphere and Troposphere differ. JMcC ( talk) 11:25, 17 April 2014 (UTC)
The composition section should actually list the composition instead of merely stating that it is uniform. Crap article — Preceding unsigned comment added by 169.233.3.191 ( talk) 06:11, 26 February 2015 (UTC)
The article says that 75% of the mass of the atmosphere is in the tropsphere. The reference for this is quoted as saying that 4 5ths of the atmosphere are in the troposphere. That's 80%, not 75%... Is there a reason to directly contradict the reference cited? — Preceding unsigned comment added by 92.228.176.27 ( talk) 13:38, 23 May 2015 (UTC) This is not good. Wikipedia can't get the proportion wrong. We need to fix this. — Preceding unsigned comment added by Tempaccount-424895-4328 ( talk • contribs) 01:21, 22 September 2015 (UTC)
Now what use of a "Composition" section, if one can't learn from it the composition of the troposphere? I'd suggest adding a sentence to this section that would actually contain the information regarding the troposphere's composition (nitrogen-78%, oxigen-20%, carbon-dioxide-1%, other trace elements, etc). 176.63.176.112 ( talk) 17:35, 28 December 2016 (UTC).
Now I se it has been an issue at least since 2015. Anyway, I have just added the composition. i took the data from the Atmosphere ( /info/en/?search=Atmosphere_of_Earth) wikipedia article; I hope it has reputable sources. 176.63.176.112 ( talk) 17:47, 28 December 2016 (UTC).
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The lead states that "The average height of the troposphere are...". Well, us English speakers (readers) know that "the X are" is only correct if X is plural; "height" is not plural. But that is not why this is awful. The troposphere is - and apparently this will be news to the editors - a layer of atmosphere having substantial dimension (call it a height or depth). The "average height" depends on what you're averaging. If you're averaging distance between the Earth's solid/liquid surface and the tropopause (which has a depth itself) then it would be roughly HALF of its total height/depth. (The article on the tropopause claims it begins at about 17 km (on average) over the equitorial Earth, yet here the claim is the Troposphere averages 18 km there. This is an obvious contradiction. Anyway, we could also take the "average" by mass (or pressure/density) and would get (two other) different values. Either way, the average is NOT the average maximum. If you're going to use the term "average" please explain WHAT is being averaged. The statement that average height is X MUST imply that 50% of X is above X and 50% is below, which is not what is meant here. Sad. 75.90.39.77 ( talk) 19:13, 15 August 2018 (UTC)
Also Venus has a troposphere. We need both a Troposphere page and a Earth's Troposhere page. — Preceding unsigned comment added by Sinucep ( talk • contribs) 14:53, 29 August 2019 (UTC)
there are four layers in the atmosphere Benjaminpaluska ( talk) 18:32, 28 October 2019 (UTC) benpaluska
ട്രോപോസ്ഫിയർ സ്ട്രാറ്റോസ്ഫിയർ മെസോസ്ഫിയർ തെർമോസ്ഫിയർ എക്സോസ്ഫിയർ ഐ നോസ്ഫിയർ 45.115.91.189 ( talk) 12:45, 11 November 2022 (UTC)
This is the
talk page for discussing improvements to the
Troposphere article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This ![]() It is of interest to the following WikiProjects: | ||||||||||||||||||||
|
The very first sentence says "The troposphere is the best portion of Earth's atmosphere". I was wondering if the adjective "best" is not a somewhat unusual choice in this description? Thanks. Todd ( talk) 20:41, 1 January 2016 (UTC)
find surface area of troposphere
i believe the volume would be 11494.04032
V=4/3pie(r2^3-r1^3)
—Preceding unsigned comment added by 68.34.160.75 ( talk) 20:36, 22 January 2008 (UTC)
"copied from wikipedia:reference desk"
Why does temperature decrease with an increase in altitude (in the troposphere of course) ? I found a mention of it in Earth's atmosphere. It says the phenomenon is called expansive cooling but thats a red link. Jay 18:08, 16 August 2005 (UTC)
The red link should have pointed to Joule-Thomson effect (it does now). However, I don't think this is correct (the thermodynamics in that section of Earth's atmosphere look decidedly iffy to me), so I will try to do a quick explanation here. The troposphere is not heated directly by the sun: any radiation from the sun which can be absorbed by the atmosphere has already been filtered out in the thermosphere and (especially) the stratosphere. The troposphere is heated directly by the Earth's surface. The heating effect decreases as you move away from the Earth's surface, and so the temperature decreases. Anyone else want to fill out the vast simplifications I've made there? Physchim62 00:48, 17 August 2005 (UTC)
~Kash 72.227.74.110 00:45, 12 April 2007 (UTC) So the major gases presented in the Earth's troposphere are Nitrogen and Oxygen?
I am currently reworking the troposphere article and I feel that the tropopause article would be better as a section of this I will merge the contents from there. The draft is at: User:NHSavage/sandbox. Comments please.-- NHSavage 09:14, 25 February 2006 (UTC)
The scales of the atmospheric cross-section are way off. Although the caption makes a brief note of this, the figure really should be replaced with a better one with a) a linear or logarithmic vertical scale; and b) a line indicating the Earth's surface (rather than the globe of the Earth, which to some readers will suggest that the Earth's atmosphere is far thicker than it truly is).
I forgot to leave an "edit summary" for the changes that I made this afternoon. I added a lot of references, added a correct explanation of the decrease of temperature with height, and deleted some incorrect material. (For instance, the incorrect argument was given that rising air has to do work against gravity, which causes it to lose energy, and thus the temperature decreases. This is incorrect, because the work done by gravity is exactly balanced by work done by the buoyant force, if the atmosphere is in hydrostatic equilibrium -- the condition expressed by the displayed equation in the pressure section.)
There are still a lot of missing references and unsupported facts in the article.
209.131.85.201 20:00, 3 August 2007 (UTC)
This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 10:05, 10 November 2007 (UTC)
"As the air parcel expands, it pushes on the air around it, doing work; but generally it does not gain heat in exchange from its environment, because its thermal conductivity is low (such a process is called adiabatic). Since the parcel does work and gains no heat, it loses energy, and so its temperature decreases."
Since the process is adiabatic, how can the parcel be losing energy? —Preceding unsigned comment added by 91.104.19.246 ( talk) 16:41, 9 May 2010 (UTC)
the earth is very cool.it is made up of 4 different layers —Preceding unsigned comment added by 68.44.198.190 ( talk) 01:21, 12 September 2008 (UTC)
This article is about the troposphere, not the atmosphere. The graphs do not have sufficient resolution to display any meaningful information about the troposphere. Can we get some pictures that show properties such as temperature and compostion of the atmosphere from sea-level to say 20km altitude; and not to outerspace! So, I'm deleting the pictures, and starting over, I'll keep my eye open for something to upload or make one myself. THanks.-- Charlesrkiss ( talk) 16:01, 21 March 2009 (UTC)
An article on troposhere which does not have a single mention of the word "cloud" in it - really?
This link was on the page but now seems to be dead:
This article writes in Atmosperic Levels section: 1) Low Level is from zero to 2400m altitude 2) Mid Level is 1800 to 7600m altitude 3) Upper Level is the highest of the three level and starts from 850hpa and above.
The 3rd is a wrong statement compared with the first two because 850hpa surface lies approximately at about 1500 meters altitude, thus upper level starts below mid level which starts from 1800m altitude and ends to 7600m altitude. Upper level cannot be "the highest level" if starts below mid level.
National Weather Service Glossary defines "upper level" as "the portion of the atmosphere that is above the lower troposphere, generally 850 hPa and above." In the same Glossary is mentioned that "local cooling of the air in middle levels of the atmosphere (roughly 8 to 25 thousand feet), which can lead to destabilization of the entire atmosphere if all other factors are equal" not as a definition of a "mid level" but inside the definition of "mid level cooling". Obviously these two definitions of middle and upper atmosphere levels are not agree each other. Finally this Glessary does not define "Low Level" or "Lower Level" at all.
I think that National Weather Service Glossary is not an accurate Glossary and needs more work to define better the terms. Also the level of troposphere must be written in a better way in Wikipedia. -- 91.140.98.49 ( talk) 23:34, 5 June 2011 (UTC)-- 91.140.98.49 ( talk) 09:44, 6 June 2011 (UTC)
I generally agree with the comment above. The levels section is basically apples and oranges, and the sources used for Lower, Mid and Upper are talking about different things, and you can't suggest they're stacked this way in the troposphere. The Low and Mid level heights as listed generally correspond to the heights used for clouds, and High (not upper) clouds would be found above 7km or so (depending on latitude...) The term Upper Air usually refers to conditions away from the surface, above ca. 1500m, whereas the upper atmosphere is above about 85 km. The section is useless at best and misleading at worst. — Preceding unsigned comment added by 204.77.41.253 ( talk) 19:35, 7 September 2011 (UTC)
The section on composition doesn't actually state the elemental composition, or contain the words 'oxygen' or 'nitrogen'. That to me seems like a serious deficiency. — Preceding unsigned comment added by 206.45.162.228 ( talk) 21:17, 7 December 2013 (UTC)
May we have some consistency about where the tropopause can be found? The articles on the Stratosphere and Troposphere differ. JMcC ( talk) 11:25, 17 April 2014 (UTC)
The composition section should actually list the composition instead of merely stating that it is uniform. Crap article — Preceding unsigned comment added by 169.233.3.191 ( talk) 06:11, 26 February 2015 (UTC)
The article says that 75% of the mass of the atmosphere is in the tropsphere. The reference for this is quoted as saying that 4 5ths of the atmosphere are in the troposphere. That's 80%, not 75%... Is there a reason to directly contradict the reference cited? — Preceding unsigned comment added by 92.228.176.27 ( talk) 13:38, 23 May 2015 (UTC) This is not good. Wikipedia can't get the proportion wrong. We need to fix this. — Preceding unsigned comment added by Tempaccount-424895-4328 ( talk • contribs) 01:21, 22 September 2015 (UTC)
Now what use of a "Composition" section, if one can't learn from it the composition of the troposphere? I'd suggest adding a sentence to this section that would actually contain the information regarding the troposphere's composition (nitrogen-78%, oxigen-20%, carbon-dioxide-1%, other trace elements, etc). 176.63.176.112 ( talk) 17:35, 28 December 2016 (UTC).
Now I se it has been an issue at least since 2015. Anyway, I have just added the composition. i took the data from the Atmosphere ( /info/en/?search=Atmosphere_of_Earth) wikipedia article; I hope it has reputable sources. 176.63.176.112 ( talk) 17:47, 28 December 2016 (UTC).
Hello fellow Wikipedians,
I have just modified 3 external links on Troposphere. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
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source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 02:23, 3 December 2017 (UTC)
The lead states that "The average height of the troposphere are...". Well, us English speakers (readers) know that "the X are" is only correct if X is plural; "height" is not plural. But that is not why this is awful. The troposphere is - and apparently this will be news to the editors - a layer of atmosphere having substantial dimension (call it a height or depth). The "average height" depends on what you're averaging. If you're averaging distance between the Earth's solid/liquid surface and the tropopause (which has a depth itself) then it would be roughly HALF of its total height/depth. (The article on the tropopause claims it begins at about 17 km (on average) over the equitorial Earth, yet here the claim is the Troposphere averages 18 km there. This is an obvious contradiction. Anyway, we could also take the "average" by mass (or pressure/density) and would get (two other) different values. Either way, the average is NOT the average maximum. If you're going to use the term "average" please explain WHAT is being averaged. The statement that average height is X MUST imply that 50% of X is above X and 50% is below, which is not what is meant here. Sad. 75.90.39.77 ( talk) 19:13, 15 August 2018 (UTC)
Also Venus has a troposphere. We need both a Troposphere page and a Earth's Troposhere page. — Preceding unsigned comment added by Sinucep ( talk • contribs) 14:53, 29 August 2019 (UTC)
there are four layers in the atmosphere Benjaminpaluska ( talk) 18:32, 28 October 2019 (UTC) benpaluska
ട്രോപോസ്ഫിയർ സ്ട്രാറ്റോസ്ഫിയർ മെസോസ്ഫിയർ തെർമോസ്ഫിയർ എക്സോസ്ഫിയർ ഐ നോസ്ഫിയർ 45.115.91.189 ( talk) 12:45, 11 November 2022 (UTC)