WeatherMatrix Handheld / PDA Content
HandheldWeather.com by WeatherMatrix
© 2002 WeatherMatrix.Net - Redistribution Prohibited. Usage logged.

[STORMREPORTS] surface features evident on the GOES water vapor channel

From: WeatherMatrix Admin (admin{at}weathermatrix.net)
Date: Wed Jan 14 2004 - 08:07:01 EST

http://www.weathermatrix.net/members/public.php3?l=Bachmeier&f=Scott

------------------------------

Date: Tue, 13 Jan 2004 16:53:00 -0600
From: Scott Bachmeier <scott.bachmeier{at}SSEC.WISC.EDU>
Subject: surface features evident on the GOES water vapor channel

Now here's something you don't see every day: surface features
apparent on the GOES imager water vapor channel. I purposely
removed the map overlay from this loop of GOES-12 imager water
vapor channel imagery, to allow you to distinctly pick out the
northern portion of the land-water boundary across the entire
northern periphery of the Great Lakes region:

http://cimss.ssec.wisc.edu/goes/misc/040113/040113.html

The GOES imager water vapor channel "weighting function"
normally peaks in the 300-500 hPa layer, telling us that most of
the radiation detected by this channel primarily originates
in the middle to upper troposphere. The arctic air mass
occupying southern Canada and the northern Great Lakes region
is so cold and dry that significant amounts of radiation
from the warm lake water below is "bleeding up" through what
little mid-tropospheric moisture is present, allowing us to see
a reflection of surfaced-based features (in this case, the strong
thermal gradient between the cold land surface in southern Canada
and the still-unfrozen warm water in the Great Lakes).

Beauty, eh? 

--
Scott Bachmeier      University of Wisconsin - Madison / SSEC / CIMSS
scott.bachmeier{at}ssec.wisc.edu         http://www.ssec.wisc.edu/~scottb

====================================================================
StormReports Email List -- TO UNSUBSCRIBE, EMAIL A BLANK MESSAGE TO: 
stormreports-unsubscribe{at}wxmatrix-membersonly ; For Options Including 
1 Per Day, Temporary Suspending, And More, Visit This Web Address:
http://wxmatrix-membersonly/group/stormreports/join
THESE REPORTS ARE MADE PUBLIC ON THE WEATHERMATRIX.NET WEBSITE!
 

Yahoo! Groups Links

To visit your group on the web, go to:
 http://wxmatrix-membersonly/group/stormreports/

To unsubscribe from this group, send an email to:
 stormreports-unsubscribe{at}wxmatrix-membersonly

Your use of Yahoo! Groups is subject to:

Thank you for using HandheldWeather.com's Handheld / PDA / Palm Content