OT-Chat: Dewpoint
- Subject: OT-Chat: Dewpoint
- From: B*@aol.com
- Date: Sat, 17 Mar 2001 19:53:41 EST
In a message dated 3/17/01 2:22:31 PM Eastern Standard Time,
donald@eastland.net writes:
<< Can someone explain 'dewpoint' to me? >>
Donald,
The concept of 'Dewpoint' is based on the current temperature and the
relative humidity. The larger the difference between the actual temperature
and the dewpoint, the drier the air is. The dewpoint is the what the
temperature would have to fall to for the air to become saturated. Remember
that cold air can hold less total moisture than warm air.
On a clear calm night, the temperature will usually fall to or very
close to the dewpoint. Clouds and/or wind will usually hold it up a bit.
If one has tender plants to protect, and the predicted low temperature
is above freezing, but the dewpoint is at or below freezing, it is best to
assume 'freeze' and take protective meausures.
Mark A. Cook
BigAlligator@aol.com
Dunnellon, Florida
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