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Post-doctoral research position available on the 'ANALYSIS OF
PROCESSES GOVERNING CHEMICAL COMPOSITION IN THE EXTRA-TROPICAL
TROPOPAUSE REGION' at Service d'Aeronomie(IPSL)/ Université
Paris VI, Paris, France This position is funded as part of the European Union FP6 SCOUT-O3 (Stratosphere-Climate links with emphasis on the UTLS-Ozone) Integrated Project. This project aims to improve our predictive capability of future ozone levels in a changing climate through better understanding of key dynamical and chemical processes which regulate ozone in the critical region of the upper troposphere and lower stratosphere (UTLS). As part of the SCOUT sub-topic on the extra-tropics, this research position is funded with the aim of increasing our understanding about trace gas distributions in the mid-latitude tropopause region. This region has recently been shown to be more complex than previously thought consisting of a mixing layer made up of air masses with many different origins (see WMO report, 2003). Improved understanding about the processes determining chemical composition in this region, and our ability to simulate them, will enable better quantification of perturbations (e.g. ozone change) to climate forcing. The successful applicant will use a global chemistry-climate model of the stratosphere and troposphere (LMDz-INCA) which has the ability to zoom over particular regions, and can be run either with tracers or with full chemistry. Model results will be compared with available datasets (e.g. MOZAIC) to examine the origin of air masses in the extra-tropical tropopause layer and to evaluate/improve model performance. The role of inter-annual dynamical variability (e.g. NAO, frontal uplift, convection) in determining the chemical composition of this region may also be examined. This research will be carried out in close collaboration other groups working on this sub-topic and, in particular, with the University of Cambridge (Peter Haynes), the Laboratoire d'Aerologie, Toulouse (Jean-Pierre Cammas) and LMD, Paris (Bernard Legras). Note that it may also be possible to extend the duration of this position. Applications are invited from post-doctoral researchers with a PhD in atmospheric sciences. Knowledge of numerical modelling, atmospheric chemistry/dynamics together with experience of computer programming (IDL, Fortran) is highly desirable. The position is for at least 1 year. If interested please send your CV including email addresses of 3 referees to Kathy.Law@aero.jussieu.fr. The Service d'Aeronomie is located in central Paris at the Jussieu campus (http://www.aero.jussieu.fr). It is a joint CNRS/University laboratory which is also part of the Institut Pierre Simon Laplace (IPSL). It carries out research into a wide range of topics related to atmospheric science. |
Posted: 09-30-2005
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