[Proflist] JCSDA Seminar, Chris Kummerow, Dec. 16

[George Ohring]

JCSDA Seminars are now webcast. See details below.

* *

	

*JCSDA Seminar*

*Title:*

	

*Cloud and Precipitation Retrievals from TRMM and GPM Satellites -- The 
Impact of A-priori Information*

*Speaker:*

	

*Christian** Kummerow
Colorado State University*

*Date,  Time & Place*

	

*Wednesday, December 16, 2009*
2:00 -- 3:00 P.M.
World Weather Building, *Room 707*, 5200 Auth Road, Camp Springs, MD 20746

*Abstract*

	

Satellite precipitation retrievals are fundamentally underconstrained.  
Regardless of whether retrievals use infrared, passive microwave, radar, 
or any combination of the above sensors, there are simply more free 
parameters associated with precipitation than can be retrieved from 
currently available satellites.  A-priori information must be added in 
the inversion procedure.  This can range from simple cloud caricatures 
to cloud profile databases derived from models or field observations to 
interactively derived structures as might be done in rainfall 
assimilation.  This talk will focus on the a-priori cloud profile 
information being developed for current and future precipitation sensors 
and missions (e.g. SSMI, AMSR-E, TRMM and GPM).  From these databases, 
both optimal estimation and Bayesian schemes are used to "retrieve" 
clouds and precipitation structures.  These databases of observed cloud 
structures, however, can also be compared to output from ECMWF's 
forecast and analysis of precipitation.  The talk will conclude by 
comparing retrieved cloud structures with ECMWF 'first guess' and 
'analyzed' structures for an oceanic convective system observed by SSMI.

*Remote Access*

	

*Video:* 1. Click on JCSDA Seminar 
<https://star-nesdis-noaa.webex.com/mw0305l/mywebex/default.do?service=1&siteurl=star-nesdis-noaa&nomenu=true&main_url=%2Fmc0800l%2Fe.do%3Fsiteurl%3Dstar-nesdis-noaa%26AT%3DMI%26EventID%3D131443797%26UID%3D-1%26Host%3D17efd4f51a031c2c0e5e44%26FrameSet%3D2%252>
2. Enter your name and email address.
2. Enter your name and email address.
3. Enter the meeting password: JCSDAseminar2009
4. Click "Join Now".
5. Follow the instructions that appear on your screen.
*Audio: *USA participants: 1-866-715-2479,  Passcode: 9457557
International:                    1-517-345-5260

*Contact*

	

George Ohring, George.Ohring at noaa.gov <mailto:George.Ohring at noaa.gov>

*Seminar File*

	

Available at  http://www.jcsda.noaa.gov/JCSDASeminars.php the day before 
the talk.



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