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- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!spool.mu.edu!uwm.edu!ogicse!emory!ncratl!mwilson
- From: mwilson@ncratl.AtlantaGA.NCR.COM (Mark Wilson)
- Newsgroups: sci.environment
- Subject: Re: Gallup Poll on Global Warming
- Message-ID: <9143@ncratl.AtlantaGA.NCR.COM>
- Date: 15 Sep 92 21:03:43 GMT
- Article-I.D.: ncratl.9143
- References: <1992Sep9.222855.25704@meteor.wisc.edu> <dhalliwe.716173595@muskwa.ucs.ualberta.ca> <STEINLY.92Sep11141803@topaz.ucsc.edu> <6238@taurus.cs.nps.navy.mil>
- Distribution: usa
- Organization: NCR Engineering and Manufacturing Atlanta -- Atlanta, GA
- Lines: 35
-
- In <6238@taurus.cs.nps.navy.mil> rovero@oc.nps.navy.mil (Josh Rovero) writes:
-
- >The parameterizations of sub-grid scale phenomena (like cumulus cloudiness)
- >have everything to do with the feedback mechanisms and net radiative balance.
- >There are a range of feedbacks (depending on method) that can be positive
- >or negative.
-
- I have never read one way or the other, so I do not know. (Which is why
- I am asking.) Do any of these models take thunderstorms into account.
- (Small scale vertical mixing. ;^)) From the point of purely personal
- observation. Here in the south, whenever the temperature gets into the
- low 90's F., afternoon thunderstorms are a given. Unless we happen to
- be sitting under a high pressure region. Much warm humid are is carried
- high into the atmosphere where the water condenses releasing even more
- heat. It is my thought that this heat would be able to escape to space
- more easily than heat nearer the surface. Also thunderstorm clouds
- (cumulus?) are very efficient at reflecting visible light.
-
- My thought is that any global warming would increase the likelyhood of
- such storms. This would be a strong negative feedback.
-
- > The conclusion is: 1) clouds MAY have a strong
- > influence in climate change, but 2) we are far from knowing the
- > maginitude, and even the sign, of this influence.
-
- I believe I have read that the early data from the satellite NASA sent
- up to study clouds, (I do not remember the name.) indicated that
- clouds, taken as a whole (whole earth integrated?) were a weak net
- negative feedback. The data was very preliminary and I haven't
- anything further.
-
- >Josh Rovero (rovero@oc.nps.navy.mil) | or Internet 5346p@cc.nps.navy.mil
- --
- --Mark
- My opinions are mine, all mine. Unless someone else claims them first.
-