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<p class="MsoNormal" style="text-align:right" align="right"><b style><span style="font-size:14.0pt"> </span></b></p>
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<p class="MsoNormal" style="text-align:center" align="center"><b style><span style="font-size:36.0pt;font-family:"Cambria","serif";color:#6c3fb5">JCSDA
Seminar</span></b></p>
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<p class="MsoNormal" style="text-align:right" align="right"><b style><span style="font-size:14.0pt">Title</span></b></p>
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<p class="MsoNormal" style><b><span style="font-size:18.0pt;font-family:"Arial","sans-serif"">Developments in Radiative Transfer
Modeling, Microwave Observing Systems, and Radiance Assimilation over Clouds</span></b><b style><span style="font-size:18.0pt;font-family:"Arial","sans-serif""></span></b></p>
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<p class="MsoNormal" style="text-align:right" align="right"><b style><span style="font-size:14.0pt">Speaker</span></b></p>
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<p class="MsoNormal"><b style><span style="font-size:14.0pt;font-family:"Arial","sans-serif"">Al Gasiewski<br>
University of Colorado </span></b><b style><span style="font-size:16.0pt;font-family:"Arial","sans-serif""></span></b></p>
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<p class="MsoNormal" style="text-align:right" align="right"><b style><span style="font-size:14.0pt">Date, Time & Place</span></b></p>
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<p class="MsoNormal" style><b style><span style="font-size:14.0pt;font-family:"Arial","sans-serif"">Wednesday,
November 14, 2012<br>
</span></b><b style><span style="font-family:"Arial","sans-serif";color:red">2:00 – 3:00 PM, Conference Center</span></b><span style="font-family:"Arial","sans-serif"">, NOAA Center for Weather and
Climate Prediction, <span style>5830 University
Research Court, College Park, MD </span></span></p>
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<p class="MsoNormal" style="text-align:right" align="right"><b style><span style="font-size:14.0pt">Abstract</span></b></p>
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<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Spaceborne passive
microwave observations from sensors such as AMSU and ATMS provide temperature
and moisture sounding in both clear air and non-precipitating clouds, along
with indirect determination of rain rate over heavier precipitating clouds.
Improvements in mesoscale forecasting could be anticipated if such
observations were made with higher spatial and temporal resolution, as possible,
for example, from either geostationary orbit or from a fleet of LEO
satellites. While both of these mission concepts are being studied, there is
an associated need to understand how data from such new observation systems
might be used within radiance assimilation schemes. We discuss in this talk
progress in extended Kalman filtering and radiative transfer modeling applied
to the problem of how to optimally use high time-space r<a name="_GoBack"></a>esolution
passive microwave imagery, and specifically, the potential for “precipitation
locking” of NWP models onto passive microwave data. It is suggested from ab
initio precipitation locking studies, although not yet proven, that time and
space scales of ~15 minutes and ~15 km are needed to maintain small enough model
errors in all fields so as to keep NWP models locked under conditions of
mesoscale convection. The concept of locking will be illustrated through geostationary
microwave observation system simulation experiments. New developments in fast
Jacobian RT modeling and CubeSat based sensor concepts for facilitating high
temporal/spatial measurements will also be discussed.</span></p>
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<p class="MsoNormal" style="text-align:right" align="right"><b style><span style="font-size:14.0pt">Remote Access</span></b></p>
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<p class="MsoNormal" style><b style><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Video:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> 1.</span><span style="font-size:10.0pt"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Go to </span><a href="https://star-nesdis-noaa.webex.com/"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">JCSDA Seminar</span></a><span style="font-size:10.0pt">
and click on the seminar title</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
2. Enter your name and email address. <br>
3. Enter the meeting password: JCSDAseminars707<br>
4. Click "Join Now". <br>
5. Follow the instructions that appear on your screen. <br>
<b style>Audio: </b>USA participants:
1-866-715-2479, Passcode: 9457557<br>
International:
1-517-345-5260</span></p>
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<p class="MsoNormal" style="text-align:right" align="right"><b style><span style="font-size:14.0pt">Contact</span></b></p>
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<p class="MsoNormal" style><span style="font-size:10.0pt">If you would like to present a seminar contact </span><a href="mailto:George.Ohring@noaa.gov"><span style="font-size:10.0pt">George.Ohring@noaa.gov</span></a><span style="font-size:10.0pt"></span></p>
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<p class="MsoNormal" style="text-align:right" align="right"><b style><span style="font-size:14.0pt">Seminar Files</span></b></p>
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<p class="MsoNormal" style><span style="font-size:10.0pt">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></span></p>
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