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<b>2 year post-doc position at LSCE on the atmospheric inverse
modeling of natural and anthropogenic CO2 fluxes in Europe</b><b><br>
</b><br>
<small>LSCE – Laboratoire des Sciences du Climat et de
l’Environnement<br>
CEA-Orme des Merisiers, 
<br>
91191 GIF-SUR-YVETTE CEDEX<br>
France</small><br>
<br>
<div align="justify">The Laboratoire des Sciences du Climat et de
l'Environnement (LSCE) opens a 2 year post-doc position on the
estimate of natural and anthropogenic CO2 fluxes in Europe based
on atmospheric measurements, atmospheric transport modeling and
statistical inversion.<br>
</div>
<br>
<u>Context:</u> <br>
<br>
<div align="justify">Inversion systems now start to provide robust
information on the seasonal cycle of natural fluxes of CO2 in
Europe. However, while the atmospheric measurement network becomes
denser in this continent, e.g. with continuous measurement
stations set-up and maintained through the ICOS infrastructure,
global to regional inversion systems still have difficulties to
retrieve robust information on the inter-annual variations,
long-term mean or spatial distribution of the ecosystem fluxes.
The potential of the ICOS network for the monitoring of
anthropogenic emissions is also poorly known. Finally, a strong
assessment of the potential of existing (GOSAT) and future
satellite GHG observing missions to constrain either the natural
and/or the anthropogenic emissions at regional scale in Europe is
needed since this potential and the cost of these missions will
have to be compared with that of denser in situ networks before
they can receive a strong involvement.<br>
</div>
<br>
<div align="justify">LSCE is an internationally renowned institute
in the field of biogeochemical cycles and climate research and has
a strong expertise in inverse modeling of GHG fluxes. An inversion
framework at European scale (~0.5° resolution) has been developed
in the laboratory based on the CHIMERE atmospheric transport model
and on complementary variational and analytical inversion systems.
<br>
</div>
<br>
<u>Position summary:</u> <br>
<br>
<div align="justify">The proposed post-doctoral study consists in
applying this inversion framework to study, compare and combine
results from the assimilation of existing satellite and in situ
atmospheric measurements based on the application of the European
inverse modeling systems. It also consists in analysing the
potential of various future observation networks. In particular,
the potential of future satellite missions (carbonsat, Sentinel-5,
GOSAT-2, OCO-2, geostationary missions), of the extension of the
in situ network, and of their combinations will be analysed.<br>
<br>
The successful candidate will work full time at LSCE (LSCE,
CEA-Orme des Merisiers, 91191 Gif sur Yvette cedex). She/he will
develop the assimilation of satellite data in the regional
variational data assimilation framework. She/he will apply it for
the estimate of natural fluxes in Europe based on real GOSAT data.
She/he will test the potential of future continental and satellite
networks to constrain the European fluxes based on the application
of the analytical inversion. An important task will be to explore
the sensitivity of the results to the estimate of statistical
uncertainties in the measurements or models used to constrain the
inversion. <br>
</div>
<br>
<u>Requirements:</u> <br>
<br>
<div align="justify">The candidate should have a PhD with experience
/ knowledge in data assimilation, carbon cycle, atmospheric
modeling or more generally in modeling tools, statistics. The
candidate should be autonomous and able to work with computing
tools such as Fortran and/or python, and with complex model codes
in UNIX environment. He should also have good communication
skills. <br>
<br>
The salary will be commensurate with experience. Applications
should include a CV and a cover letter, and if possible the names
of two reference persons. They should be sent to Philippe Ciais (<font
color="#3366ff"><u><a class="moz-txt-link-abbreviated"
href="mailto:philippe.ciais@cea.fr">philippe.ciais@cea.fr</a></u></font>),
Grégoire Broquet (<font color="#3366ff"><u><a
class="moz-txt-link-abbreviated"
href="mailto:gregoire.broquet@lsce.ipsl.fr">gregoire.broquet@lsce.ipsl.fr</a></u></font>)
and Frédéric Chevallier (<font color="#3366ff"><u><a
class="moz-txt-link-abbreviated"
href="mailto:frederic.chevallier@lsce.ipsl.fr">frederic.chevallier@lsce.ipsl.fr</a></u></font>).
The position will start in Fall 2013. Applications should be sent
as<br>
soon as possible.<br>
<br>
</div>
<pre class="moz-signature" cols="72">--
Grégoire Broquet <a class="moz-txt-link-rfc2396E" href="mailto:gregoire.broquet@lsce.ipsl.fr"><gregoire.broquet@lsce.ipsl.fr></a>
Laboratoire des Sciences du Climat et de l'Environnement
L'Orme des Merisiers, Bat 701, Point courrier 129
91191 Gif sur Yvette Cedex, France
Tel: +33 (0) 1 6908 8687 / Fax: +33 (0) 1 6908 7716
</pre>
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