12 Mar 2024
Job Information
- Organisation/Company
CNRS- Department
Laboratoire des Sciences du Climat et de l'Environnement- Research Field
Environmental science
Environmental science » Earth science
Environmental science » Global change- Researcher Profile
First Stage Researcher (R1)- Country
France- Application Deadline
1 Apr 2024 - 23:59 (UTC)- Type of Contract
Temporary- Job Status
Full-time- Hours Per Week
35- Offer Starting Date
1 Oct 2024- Is the job funded through the EU Research Framework Programme?
Not funded by an EU programme- Is the Job related to staff position within a Research Infrastructure?
No
Offer Description
The LSCE is a joint research unit (UMR 8212) between CEA, CNRS and the University of Versailles Saint-Quentin (UVSQ), dedicated to the study of climate and the environment. It is part of the Institut Pierre Simon Laplace (IPSL), which groups together laboratories working on these subjects in the Ile-de-France region. The LSCE brings together some 300 researchers, engineers and administrative staff, including 150 permanent employees from the 3 tutelles and several dozen graduate students. The student will take part in team meetings (CLIM climate modeling team, https://www.lsce.ipsl.fr/Phocea/Vie_des_labos/Ast/ast_groupe.php?id_gro… ) and attend the many seminars offered at LSCE. The thesis will be carried out mainly at LSCE, where the modeling expertise is located, with regular follow-up and exchanges with colleagues in France and abroad.
Permafrost: climate-carbon interactions from the Pleistocene to the Anthropocene
Permafrost - ground frozen for at least 2 consecutive years - covers large areas of high latitudes, particularly in the northern hemisphere. It plays a crucial role in the climate system: exchanges of heat, water and carbon with the atmosphere can alter the carbon cycle and the climate. In particular, the presence of permafrost can strongly modify the local seasonal cycle, which can favour the formation or melting of ice caps during glacial-interglacial cycles. Changes in permafrost extent are also likely to have influenced changes in atmospheric CO2 concentration during glacial-interglacial periods, by storing or releasing carbon as the permafrost advances and retreats. Finally, there are still many uncertainties as to how permafrost will evolve in the future, which could have a lasting impact on the carbon cycle and climate over the next few thousand years.
To understand its role in past changes and anticipate its future impacts, it is necessary to simulate permafrost with numerical models interacting with climate and carbon cycle models. To this end, this thesis will focus on coupling a permafrost model (VAMPER) with a coupled climate-calendar-carbon model (iLOVECLIM model). Comparison with existing data for the modern period will validate the coupling. Secondly, simulations of permafrost evolution during past periods and comparison with existing data, particularly in terms of extension, will enable the model to be improved. During glacial-interglacial periods, the student will analyze interactions with climate, in order to assess the role of permafrost in the establishment and melting of the Northern Hemisphere ice caps. The student will also add the carbon cycle to the permafrost model to assess its role in past changes in CO2 and atmospheric δ13C atmospheric, a proxy for constraining carbon exchange. These developments, coupled with comparisons with paleo reconstructions, will help improve the model and ultimately assess the role of permafrost in future CO2 and climate projections.
Requirements
- Research Field
- Environmental science
- Education Level
- PhD or equivalent
- Research Field
- Environmental science
- Education Level
- PhD or equivalent
- Research Field
- Environmental science
- Education Level
- PhD or equivalent
- Languages
- FRENCH
- Level
- Basic
- Research Field
- Environmental science
- Years of Research Experience
- None
- Research Field
- Environmental science » Earth science
- Years of Research Experience
- None
- Research Field
- Environmental science » Global change
- Years of Research Experience
- None
Additional Information
- Website for additional job details
https://emploi.cnrs.fr/Offres/Doctorant/UMR8212-NATBOU-004/Default.aspx
Work Location(s)
- Number of offers available
- 1
- Company/Institute
- Laboratoire des Sciences du Climat et de l'Environnement
- Country
- France
- City
- ST AUBIN
- Geofield
Where to apply
- Website
https://emploi.cnrs.fr/Candidat/Offre/UMR8212-NATBOU-004/Candidater.aspx
Contact
- City
ST AUBIN- Website
http://www.lsce.ipsl.fr/
STATUS: EXPIRED