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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#1
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At what height does the stratosphere start? Going by this table would it
be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
#2
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On Sunday, 31 January 2016 17:06:52 UTC, Keith (Southend)G wrote:
At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman Keith As far as I know the stratosphere starts at the tropopause - the top of the troposphere - and that varies considerably. On the 12 UTC Camborne ascent to day the tropopause is at 124 hPa. Bruce. |
#3
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In message , "Keith (Southend)"
writes At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 It looks like it from the table, with TROP presumably standing for "tropopause" and ISA for International Standard Atmosphere. But I think that's an idealised figure, since AIUI (which isn't very far) the tropopause is higher at the pole than at the equator (or is it the other way round?) and also varies with the seasons. (Though I suppose it would be possible for it to vary in height in such a way as to keep a constant atmospheric pressure.) I'm sure there'll be an expert along in a minute. -- John Hall "Honest criticism is hard to take, particularly from a relative, a friend, an acquaintance, or a stranger." Franklin P Jones |
#4
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On Sunday, 31 January 2016 17:28:28 UTC, xmetman wrote:
On Sunday, 31 January 2016 17:06:52 UTC, Keith (Southend)G wrote: At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman As far as I know the stratosphere starts at the tropopause - the top of the troposphere - and that varies considerably. On the 12 UTC Camborne ascent to That is the geography but for the physics it is where the water barrier becomes law. Hence temperature inversions? Is any of the above what happened between you and Google? Do they think you snitched on them to the government about their tax shelter in Bermuda or something? WinkipedarstleThe border of the troposphere and stratosphere, the tropopause, is marked by where this inversion begins, which in terms of atmospheric thermodynamics is the equilibrium level. At moderate latitudes the stratosphere is situated between about 10-13 km (33,000-43,000 ft; 6.2-8.1 mi) and 50 km (160,000 ft; 31 mi) altitude above the surface, while at the poles it starts at about 8 km (26,000 ft; 5.0 mi) altitude, and near the equator it may start at altitudes as high as 18 km (59,000 ft; 11 mi)./Winkipedarstle MMThe border of the troposphere and stratosphere... the tropopause, is considered the demarcation line, where this inversion begins/MM |
#5
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On Sunday, 31 January 2016 18:25:42 UTC, John Hall wrote:
In message , "Keith (Southend)" writes At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 It looks like it from the table, with TROP presumably standing for "tropopause" and ISA for International Standard Atmosphere. But I think that's an idealised figure, since AIUI (which isn't very far) the tropopause is higher at the pole than at the equator (or is it the other way round?) and also varies with the seasons. (Though I suppose it would be possible for it to vary in height in such a way as to keep a constant atmospheric pressure.) I'm sure there'll be an expert along in a minute. Let's hope so The doldrums are far more porous to water than the Polar regions because there is less of it to start with at the poles despite the considerable wind shear -or is it because of it? Temperature differences must be ruled out as adiabatic thingumies work very quickly in an updraught. the polarity at the Poles czjds all over the physics at the tropics, basically because the Poles have it all. With the huge updraughts in the numberless cylones of continental sized systems the sheer forces involved would push the stratosphere the heel out of the way as if it was dealing with mere anticyclones but it doesn't. I can only imagine this is because windshear at height is immense, so how do the jet streams work down there where they have 100% vorticity? (Good question but looks who asked it, let's ignore him and see if he goes away.) Away Away Away Away Away! Goes Away Goes Away Goes Away Dawlishlike fat chance. |
#6
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On Sunday, 31 January 2016 18:25:42 UTC, John Hall wrote:
In message , "Keith (Southend)" writes At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 It looks like it from the table, with TROP presumably standing for "tropopause" and ISA for International Standard Atmosphere. But I think that's an idealised figure, since AIUI (which isn't very far) the tropopause is higher at the pole than at the equator (or is it the other way round?) and also varies with the seasons. (Though I suppose it would be possible for it to vary in height in such a way as to keep a constant atmospheric pressure.) I'm sure there'll be an expert along in a minute. -- John Hall "Honest criticism is hard to take, particularly from a relative, a friend, an acquaintance, or a stranger." Franklin P Jones ---------------------------------------------------------------------------- Apparently you have to have the profile of a standard atmosphere for comparison purposes with the real atmosphere at some time and place. It's all about deviance. I assume the standard in this case is the annual average over the whole world. Len Wembury --------------------------------------------------------------------------- |
#7
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On 31/01/2016 18:41, Weatherlawyer wrote:
On Sunday, 31 January 2016 18:25:42 UTC, John Hall wrote: In message , "Keith (Southend)" writes At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 (Good question but looks who asked it, let's ignore him and see if he goes away.) Away Away Away Away Away! Goes Away Goes Away Goes Away Dawlishlike fat chance. Nice! -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman |
#8
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"Keith (Southend)" Wrote in message:
At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman It starts at the tropopause, which varies considerably in height. Commonly around 500 hPa at the poles, and 100 hPa at the equator. It varies most in temperate latitudes. -- Freddie Pontesbury Shropshire 102m AMSL http://www.hosiene.co.uk/weather/ http://twitter.com/PontesburyWx for hourly reports ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
#9
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"Keith (Southend)" Wrote in message:
At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 -- Keith (Southend) "Weather Home & Abroad" http://www.southendweather.net Twitter:@SS9Weatherman In the ISA it is at 226 hPa, as you have discovered. -- Freddie Pontesbury Shropshire 102m AMSL http://www.hosiene.co.uk/weather/ http://twitter.com/PontesburyWx for hourly reports ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
#10
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On Sunday, 31 January 2016 19:18:36 UTC, Keith (Southend)G wrote:
On 31/01/2016 18:41, Weatherlawyer wrote: On Sunday, 31 January 2016 18:25:42 UTC, John Hall wrote: In message , "Keith (Southend)" writes At what height does the stratosphere start? Going by this table would it be 226hPa? http://weatherfaqs.org.uk/book/export/html/174 (Good question but looks who asked it, let's ignore him and see if he goes away.) Away Away Away Away Away! Goes Away Goes Away Goes Away Dawlishlike fat chance. Nice! Always a pleasure to meet a man who appreciates good doggerel. |
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