Clear-Sky-Chart includes a humidity row. Orange and red beware. Not a =
guarantee, but better safe than sorry.
From: az-observing-bounce@xxxxxxxxxxxxx =
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Lind
Sent: Wednesday, January 18, 2017 1:31 PM
Subject: [AZ-Observing] Predicting Dew
This morning I noticed large amount of dew on things in my yard, =
reminding me of observing sessions that were ruined by severe dew. I'm =
talking about puddles of water on my observing table and water dripping =
off my scope.
So, my question is this: Is there a way to predict dewing from the =
Clear-Sky-Charts and other data, say, by comparing transparency, =
humidity, and temperature? The air-temperature/dewpoint relationship is =
not a good indicator of dewing because radiative cooling from a clear =
sky can cool objects well below both the air temperature and dewpoint. =
It's a good predictor of fog.
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please send personal replies to the author, not the list.
See message header for info on list archives or unsubscribing, and please
send personal replies to the author, not the list.