Faites connaître cette offre !
Reference : UMR8539-ISARIC-024
Workplace : PARIS 05
Date of publication : Friday, October 04, 2019
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 February 2020
Proportion of work : Full time
Remuneration : Selon expérience et grille CNRS
Desired level of education : PhD
Experience required : Indifferent
The postdoctoral fellow will perform research works in the frame of the ANR-founded COMPLEAT project.
Analyses of absorption/transmission infrared spectra measured by various laboratory spectrometers (e.g. FTS, CRDS). Development of several theoretical prediction tools for the continua of CH4-CO2, H2O-CO2 and H2-CO2, including the (dipole) band wings and the collision-induced absorption bands. Test of these tools by comparison with measurements and, after optimization of the parameters of the models, systematic calculations of absorption spectra (absorption coefficient look-up tables) for the wavelength and temperature ranges relevant for the targeted planetary applications.
- PhD/postdoc in molecular physics/molecular spectroscopy, including theory
- High motivation for scientific research
- (Strong) knowledge in Fortran will be helpful
The objective of the COMPLEAT project is to characterize by experiment and theory the far and mid infrared absorption continua of H2O-CO2, CH4-CO2 and H2-CO2 gas mixtures in support of numerical climate simulations of CO2-enriched planetary atmospheres. State of the art measurements will be performed at different temperatures by recording spectra with FTS, CRDS and OF-CAES techniques from the far to the short wave-infrared. The measured data will be combined with theoretical predictions to generate accurate data to be implemented in a 3-D Planetary Global Climate Model, for three distinct applications: first, to model the climate of early Mars to understand the conditions in which the enigmatic valley networks and lakes were carved; then, to simulate the evolution of magma ocean planets, which is a crucial step to understand why Earth and Venus evolved so differently; last, to produce synthetic observables of nearby Earth-size exoplanets - at all stages of their evolution - to investigate the possibility to characterize the atmosphere of these worlds with forthcoming astronomical observatories.
Constraints and risks
We talk about it on Twitter!