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<big>JCSDA Seminars are now webcast. See details below.<br>
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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
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<p class="MsoNormal" style="text-align: center;" align="center"><b><span
style="font-size: 36pt; font-family: Cambria; color: rgb(108, 63, 181);">JCSDA
Seminar</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
style="font-size: 14pt;">Title</span></b><o:p></o:p></p>
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<p class="MsoNormal" style=""><b><span style="font-size: 20pt;">Data
Assimilation of Cloud-Affected Radiances</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
style="font-size: 14pt;">Speaker</span></b><o:p></o:p></p>
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<p class="MsoNormal" style=""><b><span style="font-size: 16pt;">Tomislava
Vukicevic<br>
</span></b><b><span style="font-size: 14pt;">Atlantic
Oceanographic and Meteorological Laboratory (AOML), Oceanic and
Atmospheric Research (OAR), NOAA</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
style="font-size: 14pt;">Date, Time & Place</span></b><o:p></o:p></p>
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<p class="MsoNormal" style=""><st1:date month="1" day="6"
year="2010"><b><span style="font-size: 16pt;">Wednesday, January 6,
2010</span></b></st1:date><b><span style="font-size: 16pt;"><br>
</span></b><st1:time hour="14" minute="0">2:00 – 3:00 P.M.</st1:time><br>
World Weather Building, <b><span style="color: red;">Room 707</span></b>,
<st1:address><st1:Street>5200 Auth Road</st1:Street>, <st1:City>Camp
Springs</st1:City>, <st1:State>MD</st1:State> <st1:PostalCode>20746</st1:PostalCode></st1:address><o:p></o:p></p>
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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
style="font-size: 14pt;">Abstract</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="text-align: justify;">A summary of
research results on assimilation of GOES (Geostationary Operational
Environmental Satellites) Imager observations into a cloud resolving
model will be presented. The purpose of the research is to evaluate
feasibility of atmospheric data analysis with clouds.<span style=""> </span>The
studies were performed using a research data assimilation algorithm
designated Regional Atmospheric Modeling and Data Assimilation System
(RAMDS) that was developed at CIRA (Cooperative Institute for Research
in the Atmosphere) at <st1:stockticker>CSU</st1:stockticker> (Colorado
State University) and at ATOC (department of ATmospheric and
OCeanographic sciences) at CU (University of Colorado) . In<span
style=""> </span>RAMDAS a fully nonlinear 4DVAR<span style=""> </span>(4-dimensional
variational) data assimilation<span style=""> </span>approach is
applied to the cloud resolving regional model RAMS (Regional
Atmospheric Modeling System) that includes<span style=""> </span>explicit
bulk parameterization of cloud processes. The observational operator
for GOES imager observations is a system for computing unpolarized
radiative transfer for either collimated solar and/or thermal emission
sources of radiation in both clear and cloudy plane-parallel
conditions. Adjoint models of the cloud resolving and radiative
transfer models include explicit linearization of these nonlinear
models.<span style=""> </span>Overall, the results with RAMDAS
indicate that the data assimilation of the cloud affected geostationary
observations is feasible. The results show improvement in the model
representation of the cloudy atmosphere and consistent change in the
dynamical cloud environment. <o:p></o:p></p>
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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
style="font-size: 14pt;">Remote Access</span></b><o:p></o:p></p>
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<p class="MsoNormal" style=""><b>Video:</b> 1. <span
style="font-size: 10pt; font-family: Arial;">Click on <a
href="https://star-nesdis-noaa.webex.com/star-nesdis-noaa/j.php?ED=131597137&UID=912952972&PW=b276f8e23a6e63760150411e0d050d1816131909">JCSDA
Seminar</a><br>
2. Enter your name and email address.</span><br>
2. Enter your name and email address. <br>
3. Enter the meeting password: JCSDAseminar2009 <br>
4. Click "Join Now". <br>
5. Follow the instructions that appear on your screen.<span
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</span><b>Audio: </b><st1:country-region><st1:place>USA</st1:place></st1:country-region>
participants: 1-866-715-2479, Passcode: 9457557<br>
International: 1-517-345-5260<o:p></o:p></p>
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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
style="font-size: 14pt;">Contact</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="">George Ohring, <a
href="mailto:George.Ohring@noaa.gov">George.Ohring@noaa.gov</a><o:p></o:p></p>
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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
style="font-size: 14pt;">Seminar File</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="">Available at <a
href="http://www.jcsda.noaa.gov/JCSDASeminars.php">http://www.jcsda.noaa.gov/JCSDASeminars.php</a>
the day before the talk.<o:p></o:p></p>
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