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Portail > Offres > Offre UMR7583-GENTUA-043 - H/F - chercheur en charge du développement des inversions des émissions de NMCOVs

M/W - Researcher in charge of the development of NMVOCs inversions

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : vendredi 3 février 2023

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General information

Reference : UMR7583-GENTUA-043
Nombre de Postes : 1
Workplace : CRETEIL
Date of publication : Tuesday, January 17, 2023
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 March 2023
Proportion of work : Full time
Remuneration : between 2,889.51 and 4,082.90 euros gross per month depending on experience
Desired level of education : PhD
Experience required : Indifferent

Missions

The proposed work is part of the ANR ARGONAUT project which aims to better estimate French anthropogenic emissions at high resolution for the main pollutants (nitrogen oxides - NOx, carbon monoxide - CO and non-methane volatile organic compounds - NMVOCs) and carbon dioxide (CO2) by atmospheric inversion. These atmospheric inversions are based on the CIF-CHIMERE variational inverse modeling system and the satellite images of S5P/TROPOMI mainly. In this context, the successful candidate will be in charge of developing inversions of NMCOV emissions from HCHO observations from TROPOMI and evaluating the ability to separate anthropogenic and biogenic contributions from these emissions.

Activities

- Bibliographic studies on inverse modeling of NMCOVs
- Getting started with the CIF-CHIMERE variational inversion system for reactive gases
- Downloading and analysis of HCHO data from TROPOMI on Europe and France
- Sensitivity tests for the inversion of NMVOC emissions from HCHO data: definition of the set-up for the inversion of emissions.
- Inversion of VOC emissions over targeted periods: study of the possibility of separating biogenic and anthropogenic contributions from emissions.
- Evaluation of results
- Presentation of results at project meetings and at national and international conferences
- Writing of reports, abstracts and scientific articles

Skills

PhD in atmospheric or environmental science or related disciplines
Experience in chemistry and atmospheric transport modeling and data assimilation (particularly satellite data) or statistical methods
Excellent knowledge of scientific programming (Python, Fortran)
Knowledge of the Linux environment
Experience in handling large datasets
Scientific rigor and curiosity
Autonomy and initiative but with a good ability to work in a team
Writing and speaking skills in English.

Work Context

The industrialization and urbanization have led to degradation of air quality (AQ) and Climate Change (CC). Society is facing major environmental challenges with the need to develop coordinated environmental policies at the level of territories as well as nationwide to limit the impact of pollutant and greenhouse gas emissions on AQ and CC. The main objective of the ANR ARGONAUT project is to provide high resolution estimates of French anthropogenic emissions for the main pollutants (nitrogen oxides - NOx, carbon monoxide - CO and non-methane volatile organic compounds - NMVOCs) and carbon dioxide (CO2) based on atmospheric inversion and the new generation of atmospheric composition observation satellites (Sentinel-5P/TROPOMI, CO2M). To carry out efficient atmospheric inversions, high-resolution imagery is essential, in particular to exploit the local correlations between the sources, to separate them, and to quantify the anthropogenic contribution and the evolution of their emissions. As part of the ARGONAUT project, an atmospheric inversion system adapted to the exploitation of this high-resolution imagery has been developed. Ultimately, the project aims to identify the added value of atmospheric inversion approaches based on the assimilation of satellite images and the resulting emission inventories for operational services such as forecasting and assessment of exposure to pollutants or the monitoring of local CO2 emissions.

Full time posted for this position but part time also accepted.

Additional Information

LISA (Laboratoire Interuniversitaire des Systèmes Atmosphériques), UMR CNRS 7583 is a mixed research laboratory between Paris-Est Créteil University (UPEC), Université de Paris (UP) and CNRS. It is a component of the Observatory of Sciences of the Universe EFLUVE and of Institut Pierre Simon Laplace (IPSL), a Federation of 6 research laboratories working on environment and climate in the Paris region.
The main research themes in LISA relate to the understanding of the functioning of terrestrial and planetary atmospheres and of the impacts related to the changes of the atmospheric composition due to human activities. The methods used are based on direct observations in the atmosphere, on experimental simulations performed in the laboratory and on various numerical modeling approaches

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