Projets retenus

PROJET 2 : Pollution in the ARCtic System – PARCS


Chercheur responsable :

Kathy LAW, LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales

laboratoires associÉs:

Laboratoire des Sciences du Climat et de l'Environnement (LSCE)
Identités et Différenciation de l'Environnement des Espaces et des Sociétés (IDEES)
Laboratoire de glaciologie et géophysique de l'environnement (LGGE)
Laboratoire de météorologie physique (LaMP)
LIttoral ENvironnement et Sociétés (LIENSs)
Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON)
Centre d'Ecologie Fonctionnelle et Evolutive (CEFE)
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN)
Institut de physique du globe de Paris (IPGP)
Laboratoire de Météorologie Dynamique (LMD)
Cultures, Environnements, Arctique, Représentations, Climat (CEARC)
Laboratoire d'Optique Appliquée (LOA)
Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA)
Centre d'Etudes Biologique de Chizé (CEBC)
Laboratoire Géosciences Environnement Toulouse (GET)
Institut Méditerranéen d'Océanologie (MIO)
Laboratoire écologie fonctionnelle et environnement (Ecolab)

Chantier arctique

Credit photo : Jean-Jacques Pangrazi, Éclats de lumière

resumÉ du projet :

The main goal of PARCS (Pollution in the ARCtic System) is to improve understanding about the sources and fate of Arctic pollution and its impacts on climate, ecosystems and human society. Arctic pollution is highlighted as a key priority in the French Chantier Arctique prospective, as well as internationally by the Arctic Council. PARCS addresses 4 major research objectives, using a multidisciplinary approach, bringing together groups from 19 French labs and several international partners with strong track records in key Arctic research areas and complementary expertise. It aims to promote interactions between different disciplines working on air pollution (e.g. aerosols, ozone), climate (aerosol-cloud interactions), toxic contaminants such as mercury and persistent organic pollutants, impacts on ecosystems (contaminants in seabirds, pollutant cycling in marine/snow environments), and societal impacts and risks (air pollution). PARCS focuses on a number of specific research actions including the collection of new data on pollution sources and risks to societies in Siberia, a region where data are greatly lacking, pollutant cycling and impacts on ecosystems, and aerosol-cloud interactions, in critical areas where there are still major gaps in our understanding. These new datasets will be analyzed, together with existing data using a range of models with the aim to improve predictive capability of current and future changes in Arctic environment and ecosystems. PARCS also aims to promote coordination by making a major contribution to international initiatives, including a new international initiative on Arctic air pollution (PACES) being co-chaired/led by French scientists (under the International Arctic Science Council (IASC) and International Global Atmospheric Chemistry (IGAC)/IGBP), and via continued participation in Arctic Council working/expert groups (Arctic Monitoring and Assessment Programme/AMAP; Conservation of Arctic Flora and Fauna/CAFF), Pan- Eurasian Experiment (PEEX)/Centre Franco-Siberian and implementation of the UNEP Minamata Convention on mercury. It will also contribute to the new EU coordination action, EU-PolarNet.

Objectifs scientifiques du projet :

PARCS addresses 4 major research objectives covering
1) improved characterization of local pollutant emissions relative to long-range pollution transport from mid-latitude sources, through a combination of new measurements, community based risk assessments and pollution monitoring,
2) better understanding interactions between natural cycles and anthropogenic pollution, including pollutant wet/dry deposition, quantification of natural sources (relative to anthropogenic sources), pollutant recycling at the snow/ice-atmosphere interface, and quantification of riverine mercury fluxes,
3) examination of pollutant impacts on marine biogeochemistry, nutrients and oceanic emissions together with improved assessment of marine mercury cycling and contaminant impacts on Arctic fauna (sea-birds),
4) improved understanding about aerosol-cloud interactions and direct/indirect effects on climate.
These objectives will be tackled using data collection, analysis and modeling, and are linked through a common coordination strategy.