OSUG - Terre Univers Environnement

Job opportunities

Thank you for your interest in our research. Below you will find topics of internships, thesis and post-doc that we are likely to carry and supervise. Attention these topics are not necessarily financed and require then a co-construction in adequacy with the expertises and motivations of the candidates.

List of PhD project of the PHyREV team :

Detailed subject, contacts

This subject has a priority for potential funding at the TUE Doctoral department

Characterizing fine-scale extreme rainfalls over West Africa. Past & future changes, and socio-economic implications

Theory and models predict that global warming will impact the hydrological cycle, especially in the form of intensification of rainfall patterns (longer dry sequences and more intense rainfall), specifically in West Africa at daily scale, with a starting point at the turn of the century. Numerous atmospheric indices indicate that this trend is expected to continue in the coming decades.

The main challenge now confronting hydroclimatologists interested in sub-Saharan Africa (and, more broadly, in the whole of the inter-tropical zone) is to characterize and quantify how these regime changes on a daily scale are projected at intraday scales. Indeed, the pedological, hydrological and ecological processes potentially most affected by changes in rainfall patterns often have characteristic times much lower than the day, or even below the hour.

This thesis proposes to use recent methodological developments to limit these sampling effects in order to quantify changes in extreme rainfall extremes in the past, to project them in the future, and to help their interpretation in terms of evaluation of risk for design purposes or to help build socio-economic impact scenarios.

Detailed subject, contacts

Actual Evapotranspiration estimation of a crop mozaic using micro-wave scintillometry

Since the 1990s, scintillometry has been recognized as an accurate method to estimate turbulent fluxes at km² scales compatible with a satellite pixel or a hydrological model mesh. If optic scintillometry is today considered to be an accomplished technique to measure spatially integrated sensible heat fluxes, very few results have been published using microwave (MW) scintillometry to derive ET at km² scales. The recent development of a new sensors revive dreams of reliable and continuous measurements of the evapotranspiration at the landscape scale.

Search for funding in progress

List of internship propositions of the PHyREV team :

Detailed subject, contacts

Recent trends in extreme rainfall in the Sahel: combined analysis of rainfall data on the ground and the satellite product tracking storms TOOCAN.

The internship project aims to analyze data from geostationary satellites to describe the characteristics of the most intense storm systems affecting the region. For this purpose we will use the TOOCAN storm tracking product developed as part of the Megha-Tropiques satellite mission by Fiolleau and Roca (2013), which analyzes the life cycle of rainfall systems since 1983.
The work will consist in (i) extracting from the TOOCAN product the storm systems considered as intense in view of rainfall measurements on the ground, (ii) analyze the life-cycle characteristics of these systems, (iii) study their evolution over time, (iv) compare the results to those obtained from the rainfall data. The analysis will be done at the Sahel level, which will be split into sub-windows to identify possible contrasts within the region.

looking for candidates