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<p class="MsoNormal" align="right" style="text-align:right"><b><span style="font-size:14pt"> </span></b></p>
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<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:36pt;font-family:Cambria,serif;color:rgb(108,63,181)">JCSDA
Seminar</span></b></p>
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<p class="MsoNormal" align="right" style="text-align:right"><b><span style="font-size:14pt">Title</span></b></p>
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<p class="MsoNormal"><b><span style="font-size:14pt;font-family:Arial,sans-serif">Uncertainties
in Forward Passive Microwave Brightness Temperatures and What to Do about
Them</span></b></p>
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<p class="MsoNormal" align="right" style="text-align:right"><b><span style="font-size:14pt">Speaker</span></b></p>
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<p class="MsoNormal"><b><span style="font-size:14pt;font-family:Arial,sans-serif">Jeff Steward</span></b></p>
<p class="MsoNormal">UCLA, Joint Institute for Regional Earth System Science
and Engineering</p>
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<p class="MsoNormal" align="right" style="text-align:right"><b><span style="font-size:14pt">Date, Time & Place</span></b></p>
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<p class="MsoNormal"><b><span style="font-size:14pt;font-family:Arial,sans-serif">Tuesday,
May 6, 2014 1:30-2:30 PM</span></b><span style="font-size:11pt;font-family:Arial,sans-serif"><br>
</span>Conference Center, NOAA Center for Weather and Climate Prediction, 5830 University Research Court, College
Park, MD<span style="font-family:Arial,sans-serif"></span></p>
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<p class="MsoNormal" align="right" style="text-align:right"><b><span style="font-size:14pt">Abstract</span></b></p>
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<p class="MsoNormal"><a name="_GoBack"></a>Forward simulations of cloudy
satellite radiances are fraught with uncertainty especially in the microwave
regime. The scattering parameters that determine satellite brightness
temperatures critically depend on complex, unknown size and shape distributions
of liquid and solid hydrometeors. These uncertainties can lead to differences
of 50 K or more in forward calculations alone, and therefore this issue must
be addressed before attempting to assimilate this data into operational
models. In this talk, I will quantify some of the various sources of
uncertainty in passive microwave radiances (e.g. TRMM/TMI). I will also
present an elegant method we have developed at UCLA and JPL to assimilate
these uncertain observations. This method is based upon statistical inference
using the directions of the most certain correlations. The uncertain
directions can be neglected, thus reducing the order of the problem as well
as regularizing the mapping. The observation error covariance formulation
also becomes straightforward and elegant. We present the encouraging results
of our microwave brightness temperatures simulation in both 1D-Var and
Ensemble Kalman Filter frameworks.<span style="font-size:11pt;font-family:Arial,sans-serif"></span></p>
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<p class="MsoNormal" align="right" style="text-align:right"><b><i><span style="font-size:14pt">Remote
Access</span></i></b><i></i></p>
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<p class="MsoNormal"><b><i><span style="font-size:11pt;font-family:Arial,sans-serif">Video:</span></i></b><i><span style="font-size:11pt;font-family:Arial,sans-serif"> 1.</span> </i><i><span style="font-size:11pt;font-family:Arial,sans-serif">Go to </span></i><a href="https://star-nesdis-noaa.webex.com/"><i><span style="font-size:10pt;font-family:Arial,sans-serif">JCSDA Seminar</span></i></a><i> and click on the seminar title</i><i><span style="font-size:10pt;font-family:Arial,sans-serif"><br>
</span></i><i><span style="font-size:11pt;font-family:Arial,sans-serif">2. Enter your name and email address. <br>
3. No password is necessary<br>
4. Click "Join Now". <br>
5. Follow the instructions that appear on your screen. <br>
<b>Audio: </b>USA participants:
1-866-715-2479, Passcode: 9457557<br>
International:
1-517-345-5260</span></i><i><span style="font-family:Arial,sans-serif"></span></i></p>
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<p class="MsoNormal" align="right" style="text-align:right"><b><span style="font-size:14pt">Contact</span></b></p>
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<p class="MsoNormal">If you would like to
present a seminar contact <a href="mailto:Kevin.Garrett@noaa.gov">Kevin.Garrett@noaa.gov</a></p>
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<p class="MsoNormal" align="right" style="text-align:right"><b><span style="font-size:14pt">Seminar Files</span></b></p>
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<p class="MsoNormal">Slides available prior to,
and audio recording after, the presentation at <a href="http://www.jcsda.noaa.gov/JCSDASeminars.php">http://www.jcsda.noaa.gov/JCSDASeminars.php</a></p>
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</tbody></table></div><div><br></div>-- <br><div dir="ltr"><div style="text-align:left"><br></div><div style="text-align:left"><font color="#6600cc" face="verdana, sans-serif"><span style="background-color:rgb(255,255,255)"><b><i>Ana Carrion</i></b></span></font></div>
<div style="text-align:left"><span style="background-color:rgb(255,255,255)"><font size="1" face="arial, helvetica, sans-serif">National Oceanic and Atmospheric Administration</font></span></div><div style="text-align:left">
<font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif">Program Support Specialist</font></div><div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif">Riverside (RTi) at NOAA/NESDIS/STAR/JCSDA</font></div>
<div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif">NCWCP, E/RA, Room #2652</font></div><div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif">5830 University Research CT</font></div>
<div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif">College Park, MD 20740-3818</font></div><div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif"><br>
</font></div><div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif">Email: <a href="mailto:Ana.Carrion@noaa.gov" target="_blank">Ana.Carrion@noaa.gov</a></font></div>
<div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif"><b>JCSDA Front Office: 301-683-3615</b></font></div><div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif"><b>STAR Front Office: 301-683-3485</b></font></div>
<div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif"><b>Direct: 301-683-3520</b></font></div><div style="text-align:left"><font style="background-color:rgb(255,255,255)" size="1" face="arial, helvetica, sans-serif">Fax: 301-683-3526</font></div>
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