<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height:normal"><span style="font-size:14.0pt;font-family:"Times New Roman","serif"">Note: Access to the WebEx webcast is
limited to the first 25 participants. If you are locked out, don't despair; the
slides are at <a href="http://www.jcsda.noaa.gov/JCSDASeminars.php"><span style="color:blue">http://www.jcsda.noaa.gov/JCSDASeminars.php</span></a> <br>
Colleagues in the same office are encouraged to share the WebEx connection. Participants
in the conference call are urged to mute their telephones or maintain absolute
silence in their rooms.</span></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">The Assimilation of Surface Sensitive Microwave Observations Over
Land: Recent Results and Open Issues</span></b><b style><span style="font-size:18.0pt"></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">Fatima Karbou </span></b><b><span style="font-size:14.0pt"></span></b></p>
<p class="MsoNormal"><b style><span style="font-size:14.0pt" lang="EN-GB">Météo France</span></b><b style><span style="font-size:16.0pt"></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">Wednesday, May 16, 2012<br>
</span><span style="color:red">2:00 – 3:00 PM, </span></b><span style="font-size:11.0pt">World Weather Building, <b style><span style="color:red">Room 707</span></b>, 5200 Auth Road, Camp
Springs, MD 20746</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"><span style> </span></span><span style="font-size:11.0pt">One of the many scientific
challenges in the field of numerical weather prediction is to extract useful
information on the atmospheric boundary layer using observations from remote
sensing microwave instruments such as AMSU-A, AMSU-B/MHS or SSMIS. These data
contribute increasingly to improve short to medium range forecasts, but also
to improve re-analyses. Better use of these data often requires appropriate
representation of the surface in the models, in both emissivity and
temperature. This is achieved over sea, and satellite data have a tremendous
impact on the atmospheric analyses over oceans. Over land, the surface
emissivity is highly variable and may cause biases in the forward model if
its temporal and spatial variability are not well taken into account. In such
a situation, the model cannot produce realistic simulations of observations
sensitive to the surface and may reject useful observations, including those
not sensitive to the surface. This case concerns in particular the land and
sea ice surfaces for which the surface emissivity is particularly challenging
to model. During the seminar, some of the work carried out at Météo-France
for a better description of the emissivity of land and sea ice surfaces will
be summarized. The methodology used for estimating the emissivity in the
model and its impact on the performance of the radiative transfer model will
be presented. The impact of a proper modeling of the land and sea ice
emissivity, in terms of forecast skill and quality of analyses, will be
discussed</span><span style="font-size:11.0pt">.</span><span style="font-size:11.0pt"></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><span style="font-size:10.0pt"><a href="https://star-nesdis-noaa.webex.com/mw0305l/mywebex/default.do?siteurl=star-nesdis-noaa"><span style="font-family:"Arial","sans-serif"">JCSDA
Seminar</span></a> 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 <a href="mailto:George.Ohring@noaa.gov">George.Ohring@noaa.gov</a></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 the day before and audio recording the day 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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<span style="font-size:14.0pt;line-height:115%"><a href="http://www.jcsda.noaa.gov/JCSDASeminars.php"><span style="color:blue"><br></span></a></span></p>
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