[ES_JOBS_NET] 2 year post-doc position at LSCE on the atmospheric inverse modeling of natural and anthropogenic CO2 fluxes in Europe

Gregoire Broquet gregoire.broquet at lsce.ipsl.fr
Mon May 13 09:18:20 MDT 2013

*2 year post-doc position at LSCE on the atmospheric inverse modeling of 
natural and anthropogenic CO2 fluxes in Europe**
LSCE -- Laboratoire des Sciences du Climat et de l'Environnement
CEA-Orme des Merisiers,  ?

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.


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 

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.

_Position summary:_

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.

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.


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.

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 
(_philippe.ciais at cea.fr_), Grégoire Broquet 
(_gregoire.broquet at lsce.ipsl.fr_) and Frédéric Chevallier 
(_frederic.chevallier at lsce.ipsl.fr_). The position will start in Fall 
2013. Applications should be sent as
soon as possible.

Grégoire Broquet <gregoire.broquet at lsce.ipsl.fr>
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

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