[CAUT] RH? Please enlighten me.

[Fred Sturm]

On Dec 9, 2008, at 12:40 PM, Don Mannino wrote:
>    {I wonder - there must be some point where the air is so cold it  
> cannot hold any moisture - would that be at freezing?  Yet I know  
> that it can snow at -15ºf, but that may just mean that it is warmer  
> up in the clouds.  There's a gap in my understanding that I need to  
> fix}

	Air below freezing can definitely hold some water vapor. That's where  
the frost on your windshield is coming from (though not in LA <G>).
Regards,
Fred Sturm
University of New Mexico
fssturm at unm.edu


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