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- Path: sparky!uunet!news.claremont.edu!nntp-server.caltech.edu!SOL1.GPS.CALTECH.EDU!CARL
- From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
- Newsgroups: sci.environment
- Subject: Re: Questions About Ozone
- Date: 17 Dec 1992 04:56:04 GMT
- Organization: HST Wide Field/Planetary Camera
- Lines: 17
- Distribution: world
- Message-ID: <1gp194INNik@gap.caltech.edu>
- References: <2933450643.9.p00004@psilink.com> <1992Dec15.192747.20909@texhrc.uucp>,<1992Dec16.183742.1@cubldr.colorado.edu>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- In article <1992Dec16.183742.1@cubldr.colorado.edu>, parson_r@cubldr.colorado.edu (Robert Parson) writes:
- = 1 Dobson unit (DU) is 0.01 times the number of millimeters that a column of
- =ozone overhead would occupy, if you were to compress it to 1 at. pressure and
- =heat it to 0 degrees Celsius. Put another way, the ozone layer over the USA is
- =~300-350 D.U. (depending on season); this means that at 0C and 1 at. it would
- =be about 3 mm high. 1 D.U. corresponds to about 2.7 E16 molecules/cm^2.
- =Nothing subtle; just a way to get the numbers into the range 100-500.
-
- I think you meant to say "100 times the number of millimeters...."
- --------------------------------------------------------------------------------
- Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
-
- Disclaimer: Hey, I understand VAXen and VMS. That's what I get paid for. My
- understanding of astronomy is purely at the amateur level (or below). So
- unless what I'm saying is directly related to VAX/VMS, don't hold me or my
- organization responsible for it. If it IS related to VAX/VMS, you can try to
- hold me responsible for it, but my organization had nothing to do with it.
-