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DRF: Thesis subject SL-DRF-21-0308

RESEARCH FIELD
Climate modelling / Earth and environmental sciences
TITLE English Français

Role of interaction between heat, water and momentum fluxes at the air-sea interface in water cycle and climate variability changes

ABSTRACT

How the position and the seasonal to interannual evolution of the Intertropical Convergence Zone in the equatorial regions or of storm track in mid latitude will evolved with ongoing global warming is a major research question. The aim of this PhD subject is to better understand the linkages between these two features of the atmospheric circulation and the way surface sensible, water and momentum fluxes regulate Earth’s water cycle and the characteristics of climate variability and climate change. The development will make use of the latest parameterizations of heat and momentum fluxes included in the IPSL climate model and of new ideas to improve the ocean-atmosphere coupling. Comparisons of the simulated fluxes with available observations and the realization of a suite of academic simulations will be used to isolate the role of the different turbulent fluxes on climate characteristics. These simulations will also serve as guidelines for model developments by testing the effect of alternative flux representations or of improved coupling between the ocean and atmospheric boundary layers. Mid-Holocene and future climate projections will also be considered to put the results obtained for the modern climate in a wider context.

LOCATION
Laboratoire des Sciences du Climat et de l’Environnement
Modélisation du CLIMat
Place: Saclay
Start date of the thesis: 01/10/2021
CONTACT PERSON

Sébastien Fromang  

CEA
DRF/LSCE (DSM)//CLIM
LSCE-IPSL
Orme des Merisiers, bât 714
91191 Gif sur Yvette

Phone number: +33 1 69 08 18 63

UNIVERSITY / GRADUATE SCHOOL
Versailles-St-Quentin-en-Yvelines
Sciences de l’Environnement d’Île de France
THESIS SUPERVISOR

Pascale Braconnot

CEA
DRF/LSCE (DSM)
Orme des Merisiers
Bât. 714
91191 Gif sur Yvette Cedex