Thread: Dew Point temp for standard sea level air density
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Old May 20th 05, 01:54 PM posted to sci.geo.meteorology
Scott Scott is offline
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First recorded activity by Weather-Banter: Sep 2004
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Default Dew Point temp for standard sea level air density
wrote:
Hello,
standard sea level air density is often quoted as 1.225 kg/m^3
for air temp 15 deg C
relative humidity 0%

If I wanted to express the above using dew point temp instead of
relative humidity what value of dew point temp would I use ?

Thanks & regards


Well, any small value would do. Technically, of course,
RH = 0% means there's no moisture in the air so the
dewpoint would be undefined -- there's no point to which
you can cool the air [at constant pressure] to condensation
if there's nothing to condense. I'd just use -50C, or so,
and ignore the little error.

I guess a good question would be: why do you want to do this?

Scott

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