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<p class="MsoNormal" style="text-align: right;" align="right"><b><span
style="font-size: 14pt;"> </span></b><o:p></o:p></p>
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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;">Representation
Error in Ocean Data Assimilation</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=""><st1:place><st1:PlaceName><b><span
style="font-size: 16pt;">Robert</span></b></st1:PlaceName><b><span
style="font-size: 16pt;"> </span></b><st1:PlaceName><b><span
style="font-size: 16pt;">Miller</span></b></st1:PlaceName><b><span
style="font-size: 16pt;"><br>
</span></b><st1:PlaceName><b><span style="font-size: 16pt;">Oregon</span></b></st1:PlaceName><b><span
style="font-size: 16pt;"> </span></b><st1:PlaceType><b><span
style="font-size: 16pt;">State</span></b></st1:PlaceType><b><span
style="font-size: 16pt;"> </span></b><st1:PlaceType><b><span
style="font-size: 16pt;">University</span></b></st1:PlaceType></st1:place><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="11" day="18"
year="2009"><b><span style="font-size: 16pt;">Wednesday, November 18,
2009</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;">The difference
between observations and a model simulation can be decomposed into
instrument error, model forecast error, and representation error.<span
style=""> </span>A major challenge for data assimilation is accurate
characterization of these errors.<span style=""> </span>We have
developed a technique which identifies the information content of a
model.<span style=""> </span>We use a long simulation to formulate a
basis for a reduced state space of the model as determined by our
metric for the information content.<span style=""> </span>The
projection of a sequence of model-data misfits into the reduced model
state space can be used to estimate the model forecast errors.<span
style=""> </span>The estimate, so obtained, is analogous to the
estimate obtained by ensemble methods.<span style=""> </span>The
remainder of the misfits, which have no projection on the model state
space, can be assigned to the model representation error and instrument
error. Work has begun on construction of a system to test the
consequences of incorporating our error estimates into the operational
climate forecast system.<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<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-align: right;" align="right"><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=131205137&UID=911429012&PW=12de25fc787739282a1e160908435101560d010b"
target="_blank">JCSDA Seminar</a></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
style="font-size: 10pt; font-family: Arial;"> <br>
</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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