[AZ-Observing] Re: Snow

  • From: Stan Gorodenski <stanlep@xxxxxxxxxxxxx>
  • To: az-observing@xxxxxxxxxxxxx
  • Date: Wed, 15 Apr 2009 18:31:39 -0700

Tom,
Irrespective of what the data shows with regard to clouds, it has been 
extremely windy this past month, more so than usual. Other residents 
here have noticed the same thing. April has never been this windy, and 
cold (not all areas are equally affected by global warming, and besides, 
recent research discovered we won't feel the real impacts of global 
warming for about 10 years). Even if the skies are clear, you would not 
be able to observe as most amateurs do because it is just too windy. 
Even with an observatory with a dome, like I have, it is not much fun 
when the wind is not only strong, but cold.
Stan

tpolakis@xxxxxxx wrote:

>Dan,
>
>The "85% clear skies average" must mean that it's somewhat sunny for a good
>part of the day.  It has little bearing on the sort of clear sky
>astronomers are interested in.  Fortunately, we have the truth in the form
>of cloudiness data that Brian Skiff has been gathering since 1980.  We
>discussed this subject on AZ-Observing as recently as 2007.
>
>//www.freelists.org/post/az-observing/Flagstaff-nighttime-cloudinesssky
>-brightness,6
>
>
>Note the lack of any real trend in yearly cloudiness.  While troughs
>typically don't come this far south in April, it's typically not a very
>good month for observing.
>
>Climate change is happening, but I doubt that Arizona's astronomical
>viewing conditions have been impacted by it yet.
>
>Tom
>  
>
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