A aviation & planes forum. AviationBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AviationBanter forum » rec.aviation newsgroups » Piloting
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

How do weather services get sky conditions above the surface?



 
 
Thread Tools Display Modes
  #1  
Old July 23rd 08, 07:56 PM posted to rec.aviation.piloting
Bertie the Bunyip[_24_]
external usenet poster
 
Posts: 2,969
Default How do weather services get sky conditions above the surface?

Mxsmanic wrote in
:

buttman writes:

Theres a little "eye" that looks up at the sky at various points. It
detects if there is cloud, or sky. The sensor is prone to errors,
though. Sometimes if it's broken, it'll say its overcast because some
of the sensors are pointing diagonally and are sensing the side of
the cloud. I had an ATC college-style text book that had a very
informative diagram of how they worked, but that book is long gone.

http://www.cyanogen.com/products/cloud_main.htm

here is an example of one.


Cool--I wouldn't mind having one (useful for photography as well as
astronomy and aviation). However, it's still a ground-based sensor,
so it would only see the first level of clouds. Conversely, a
satellite would only see the top layer of clouds. If there are three
or four layers of clouds, how do weather services discover them?

The same is true for temperature, humidity, and pressure. Pressure
you can probably infer from surface pressure, and temperature you can
guess at in a similar way. Humidity is more vague. I'm curious as to
how all of these get measured aloft.

And what about winds? Weather services seem to have awareness of
winds aloft, but where are they getting the measurements? Winds aloft
may have no correlation with surface winds and can change a lot over
short distances. You could set up probes, but that's a lot of probes
to launch and recover even to cover small areas. You could rely on
PIREPs, but that seems kind of hit and miss. So how is it really
done?


Send me $300 and I'll tell you.


Bertie
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Aviation Weather Services, AC 00-45F Bob Gardner Piloting 1 December 20th 07 02:58 AM
Gliding Weather Services around the world [email protected] Soaring 9 May 3rd 07 09:42 AM
AF#2/conditions Christopher Range Piloting 11 October 26th 06 02:57 AM
National Weather Services Duties Act of 2005 Rob Piloting 0 September 7th 05 09:44 PM
Deicing during heavy weather conditions William W. Plummer Instrument Flight Rules 0 December 24th 04 01:12 PM


All times are GMT +1. The time now is 10:28 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 AviationBanter.
The comments are property of their posters.