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August 2012
Message 43

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[Met-jobs] 12-month postdoctoral fellowship at the CNRM-GAME (Toulouse, France)

From Romain ROEHRIG <romain.roehrig@meteo.fr>
To met-jobs@lists.reading.ac.uk
Date Tue, 21 Aug 2012 15:21:29 +0200

Applications are invited for a 12-month postdoctoral position starting in January 2013,  in the climate research group of the CNRM-GAME in Toulouse (France) to work on the following subject: "Multi-model analysis of the role of clouds in the tropical large-scale circulation with an emphasis on intraseasonal timescales". The deadline for application is October 15th 2012.


Framework:

    This position is funded by the European Union through the EUCLIPSE (EU Cloud Intercomparison, Process Study & Evaluation, http://www.euclipse.eu) FP7 project. This project aims at better constraining cloud feedbacks in both present-day and future climates, in the context of CMIP (Coupled Model Intercomparison Project, http://cmip-pcmdi.llnl.gov/), CFMIP (Cloud Feedback Model Intercomparison Project, http://cfmip.metoffice.com/), and of the upcoming 5th Assessment Report of the IPCC. In order to achieve this goal, the project uses original satellite observations based on active sensors, evaluate Earth System Models both at the large-scale and at the process-scale and in both climate and NWP modes. Coordinated idealized sensitivity experiments are also conducted to identify, understand and prioritize the most critical cloud processes for different aspects of the climate system.

    The present call concerns the second workpackage of the project on “Climate model Evaluation and Analysis”. It focuses on the role of clouds in the tropical intraseasonal variability (MJO and possibly convectively-coupled equatorial waves). Cloud-radiation feedbacks and moisture-convection feedbacks have been shown to play an active role in the MJO and in the ability of the atmospheric component of ESMs to simulate this variability. The link between the simulation of clouds and that of the main modes of subseasonal variability will be investigated in a subset of CMIP5 models. As proposed by the fourth workpackge of EUCLIPSE, coordinated idealized sensitivity experiments, where the cloud radiative effect is switched off, will offer an interesting framework for tackling the role of cloud-radiation feedbacks in the representation of intraseasonal variability, with a possible extension towards the large-scale tropical circulation (e.g., Hadley-Walker cells), depending on the interest of the successful applicant. Transpose-AMIP simulations already performed with the CNRM climate model could also be analyzed to better understand the links between cloud processes and the representation of the life-cycle of intraseasonal events.

Work description:

The proposed work will mainly consist in the following tasks :
  1. Document the clouds and their radiative impacts within MJO disturbances and possibly convectively-coupled equatorial waves, using satellite observations based on the active sensors of the A-Train;
  2. Evaluate the ability of EUCLIPSE models to capture the cloud component of the MJO, based on the COSP outputs, and for coupled, AMIP and Aquaplanet experiments;
  3. Analyse the role of the cloud-radiation feedbacks at intraseasonal timescale using the coordinated idealized experiments with no cloud radiative effect.
  4. Develop and apply process-oriented diagnostics for the understanding of model biases in the representation of the subseasonal variability, with an emphasis on the role of cloud feedbacks;
  5. Write project reports and scientific articles, and give presentations in EUCLIPSE meetings and international conferences.
Required qualifications:
  1. A Ph.D. in atmospheric sciences obtained before the starting date of the contract.
  2. An expertise in Fortran and Unix, and an experience in high computing.
  3. A good command of English.
An experience in data analysis, climate modelling and/or statistics will be appreciated.

Practical information:

The successful applicant will be contracted by Météo-France and will be based at the “Centre National de Recherches Météorologiques - Groupe d’Etude de l’Atmosphère Météorologique” (Toulouse, France; http://www.cnrm.meteo.fr/) within the climate research group. The opened position will start in January 2013 for a 12-month duration. The net salary will be competitive and commensurate with qualifications and experience.

For full consideration, applicants are asked to submit a curriculum vitae (including research experience, publications and conferences, and computing skills), an application letter including a detailed statement of research interest and the names, telephone and email address of 2 referees. Applications should be sent by email before October 15th 2012 to:
romain.roehrig@meteo.fr
with copy to:
gilles.bellon@meteo.fr and herve.douville@meteo.fr

Informal enquiries are welcome

For more details about CNRM-GAME climate research activities, please visit: http://www.cnrm.meteo.fr/gmgec/


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Romain ROEHRIG                 Phone: +33(0)5 61 07 97 62
METEO-FRANCE                   Fax: +33(0)5 61 07 96 10
CNRM-GAME/GMGEC/EAC            E-mail:romain.roehrig@meteo.fr
42, Avenue G. Coriolis
31057 TOULOUSE Cedex FRANCE
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