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The objective of the B2C project is to spectrally resolve the optical properties of carbonaceous aerosols (black and brown carbon: BC, BrC) and their variability in link with the particle formation process and atmospheric aging in order to provide the required parameterizations to climate models and

The widespread retreat of glaciers is a significant effect of climate change. This decline will continue in the future with significant social consequences. The aim of this project is to provide a robust numerical framework for past and future modelling of glacier evolution and to reduce uncertain

Low-level clouds are key components in many regional climates but usually not well represented in numerical models and difficult to detect. Recently it has been shown that an extensive low-level cloud cover (LLCC) develops during the June-September main dry season in western Central Africa, from the

Tropical terrestrial ecosystems are highly productive and constitute a critical component of the global carbon cycle. The Congo Basin, the second largest river basin on Earth, accommodates extensive swamp forests in its central part, known as the “Cuvette Centrale Congolaise”. Peat accumulation asso

Surface winds over Antarctica are among the strongest and most persistent on Earth. These winds profoundly shape the surface conditions on the ice sheet, breaking the surface temperature inversion, and transporting snow. Coupled climate models used for IPCC projections have too low resolution to rep

We combine (1) reconstructions of Mediterranean conditions during high amplitude perturbation events using several proxies (indicators/tracers) with (2) numerical simulations obtained with a high spatial resolution (1/8º) regional model enabled several proxies. The target is oriented towards the ana

The work plan for this project includes: 1) chronological calibration by the use of pollen assemblages and the analysis of oxygen isotopes of foraminifera shells. 2) On the basis of chronological information, sampling and treatment of samples (washing and controlled decarbonation) in view of miner

The overarching objective of HILIAISE is to better understand and model the human imprint on semi-arid energy and water cycles. To obtain this objective: 1) The project will have a long term field campaign with a 15-day Special Observing Period during summer 2020 over the Ebro basin in northeast

Ice sheets are the main contributor to long-term sea-level changes. Since the mid-nineties, the observation of unexpected, important and rapid dynamical changes of numerous outlet glaciers shed light on the vulnerability of our society to sea-level rise. As pointed out in the last two IPCC assessmen

The goal of this project is to apprehend the role of water infiltrations into the thermal dynamics of rock wall permafrost, i.e. permafrost eveolution, and in the triggering of rockfalls in high mountain environments. It consists in developing numerical approaches coupling the thermal and hydrologi

In the remote Southern Ocean (SO) considered as a nutrient “hub” between the Atlantic, Pacific and Indian Oceans, the sources, sinks and processes controlling vital nutrient distribution remain a black-box to date. In this context, SWINGS is a multidisciplinary 4-year project dedicated to elucidate

Le calcium (Ca) est un nutriment essentiel en biologie, et un élément clef dans les mécanismes de séquestration biogéochimiques. Malgré des avancées en biogéohimie des isotopes du Ca, la dynamique du Ca dans la Zone Critique reste mal comprise. Le projet FILi-CaBeSo propose une percée dans notre com

Thin sedimentary layer at the interface between the river and its aquifer, the hyporheic zone strongly modifies biogeochemical signals at the watershed scale. This peculiar reactive behavior, which is associated to a high spatio-temporal heterogeneity, remains poorly understood. The SUCHY project ai

The project aims to enable the development of new generation snow models by addressing 6 key points of snow modeling from its 3D microstructure: Task 1: isothermal metamorphism The objective here is to develop a digital micro-scale model which describes the evolution of snow in 3D under isothermal

CLIMDO investigates the heterogeneous interaction of mineral dust with two of the most common organic SOA precursors: glyoxal and methylglyoxal from ubiquitous anthropogenic and biogenic sources The work carried out so far consists of IMT-DOUAI (partner 2): The heterogeneous interaction of ethanedi

Coordinated monitoring and mitigation strategies from the territories scale to the country scale are needed to reduce pollutant emissions to non-impacting levels for human health and ecosystems and reduce GHG emissions to limit the CC effects. Monitoring the emissions at a high resolution are then r

Perennially frozen slopes occur in many mountain ranges of the world, and temperature changes in these environments have notable impacts on the state of permafrost, leading to increased slope instability and hazard from mass movements. In areas of discontinuous permafrost, these slopes can be hard t

The advent of spaceborne remote sensing first allowed the collection of large amounts of data over remote and isolated places such as the ice-sheets. For the first time, continent-wide mappings have enabled a more precise description of the dynamical and geometrical structure of the ice-sheets and h

1) Objective 1 aims to assess the elemental composition and sinking rates of a broad taxonomic and size range of silicified rhizarians 2) Objective 2 aims to evaluate the contribution of rhizarians to POC and bSiO2 fluxes, from the epipelagic to the mesopelagic zone using sediment traps 3) Obj

Magnetotactic bacteria (MTB), present in natural environments, are able to react to the earth's magnetic field. A magnet is therefore a simple and efficient strategy used for cell concentration from environmental samples. In addition, MTB have the capacity, in certain environmental conditions which

Face au changement climatique, une meilleure compréhension de l’écologie fonctionnelle des vers de terre est devenue cruciale au regard de leurs effets sur les transferts d’eau. Le projet PRECIOUS a pour objectifs de définir des nouveaux groupes fonctionnels basés sur la capacité des vers à modifier

The main goal of METACLOUD is to improve our fundamental understanding of chemical and biological processes occurring in clouds, with an emphasis on the role of microbial metabolism of C1 compounds in cloud chemistry. To achieve this objective, newly acquired data on the metabolic networks of the cl

BRAISE has four objectives: (a) create the first dataset of charcoal accumulation in marine sediments of modern ages; (b) identify spatial patterns in the distribution of charcoal accumulation in a given area, construct hypotheses about its processes and determine local and/or regional scale correct

The meridional overturning circulation controls the fluxes of heat and carbon in the ocean on long time scales. Dense waters are sinking to the abyss at high latitudes, and are uplifted on their way south to come back to the surface and close the circulation. The classical view is that upwelling of