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<font size="+1"><font face="Helvetica, Arial, sans-serif">Dear
Colleague,<br>
<br>
The NASA-NOAA-DOD Joint Center for Satellite Data Assimilation
is pleased to announce openings for the following two positions
in satellite data assimilation.<br>
<br>
George<br>
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<h2><small>JCSDA Seeks 2 Experienced Scientists for ATMS and CrIS
Data Assimilation and OSSE Efforts</small></h2>
<font size="+1"><font face="Helvetica, Arial, sans-serif">The U.S.
Joint Center for Satellite Data Assimilation (JCSDA) is
dedicated to accelerating the transition of new sensors into
U.S. operational Numerical Weather Prediction (NWP) models. The
instruments on-board the future JPSS mission (and, more
imminently, the upcoming NPP mission) will serve as the U.S.
next-generation polar-based sensors. Major improvements are
expected in measurement accuracy, and spectral and spatial
resolutions, with an unprecedented set of challenges associated
with them. These challenges include technical aspects such as
ensuring that the network bandwidth, the computing power, and
the storage space are sufficient to handle these data, but also
include scientific issues such as the optimal usage of the data,
the proper extension of assimilation and radiative models, and
pre-processing algorithms to tackle the new measurements. <br>
<br>
A number of these sensors (CrIS and ATMS for instance) will
initially complement but ultimately replace a set of current
sensors (AIRS/IASI, AMSU/MHS, respectively) that have played an
important role in the Numerical Weather Prediction (NWP)
assimilation models. The JCSDA is seeking experienced scientists
who will complement the data assimilation efforts for the ATMS
and CrIS sensors.<br>
<br>
The aim is to fully prepare the NOAA NWP global assimilation and
forecast system (GDAS) for the assimilation of the NPP/JPSS ATMS
and CrIS data, within the infrastructure of the Joint Center for
Satellite Data Assimilation (JCSDA) and/or the NESDIS/STAR
infrastructure.<br>
<br>
Some of the effort will focus on performing Observing System
Simulation Experiments (OSSEs) using CrIS and ATMS proxy data
already produced by NESDIS. This will assess the expected impact
of these sensors on global forecast skill. <br>
<br>
Upon launch of NPP, the efforts will focus on testing the impact
of assimilating real data from NPP ATMS and CrIS and performing
data denial experiments (OSEs). This will be coordinated with
projects at NESDIS for the sensor calibration, channel
selection, and quality control, and<br>
with the JCSDA's continued development of the Community
Radiative Transfer Model (CRTM).<br>
<br>
To accomplish these tasks, the two scientists sought (one
dedicated to the assimilation of ATMS microwave data and one
dedicated to the assimilation of CrIS hyperspectral IR data)
must have strong experience in satellite data assimilation
(previous experience with GSI and GFS is a significant plus),
OSSEs, and passive remote sensing (using variational
algorithms). Previous experience with AIRS, IASI and/or AMSU,
MHS is a plus. Experience in computer languages such as FORTRAN
90/95 and IDL is expected. Knowledge of scripting languages such
as BASH and Java, and familiarity with software configuration
tools such as subversion, are also desirable.<br>
<br>
Good interpersonal skills are also needed for these positions,
as interactions with other JCSDA partners are expected. The
results of these efforts are expected to be presented at
conferences and JPSS technical meetings. Therefore, good
presentation skills are also required. Up to two trips a year
are planned.<br>
<br>
The positions are located at JCSDA's Headquarters in Camp
Springs, MD. For application information, please visit the JCSDA
website at <a class="moz-txt-link-freetext" href="http://www.jcsda.noaa.gov/">http://www.jcsda.noaa.gov/</a><br>
<br>
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