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Papers
7 resultsShowing papers from Météo-France
ClearA Synthesis of Global Coastal Ocean Greenhouse Gas Fluxes
This large-scale study measured greenhouse gas exchanges between the coastal ocean and atmosphere, finding that while coastal waters absorb carbon dioxide, they also release nitrous oxide and methane that offset much of that climate benefit. While focused on greenhouse gases rather than microplastics, the study is relevant because climate change and ocean chemistry changes affect how microplastics behave in marine environments. Warming oceans and changing chemistry could influence how microplastics break down and move through the food chain.
Spatial variability of Saharan dust deposition revealed through a citizen science campaign
Researchers used a citizen science campaign to collect dust-on-snow samples across the Pyrenees and Alps following a major Saharan dust event in February 2021. They found that the amount and particle size of deposited dust decreased with distance from the source, and south-facing slopes accumulated more dust. The study demonstrates how citizen science can fill gaps in understanding atmospheric dust transport, which also carries microplastics and other pollutants across long distances.
Scientists’ Warning to Humanity: Rapid degradation of the world’s large lakes
Scientists issued a comprehensive warning that the world's large lakes — critical freshwater sources supporting biodiversity and billions of people — are degrading rapidly due to warming temperatures, habitat destruction, invasive species, and accelerating pollution including microplastics. The review calls for urgent conservation action and a global network of long-term lake monitoring stations to detect and respond to ongoing changes.
Quantification of the radiative impact of light-absorbing particles during two contrasted snow seasons at Col du Lautaret (2058 m a.s.l., French Alps)
Researchers quantified light-absorbing particle concentrations in alpine snowpack over two seasons at Col du Lautaret in the French Alps and used the Crocus snowpack model to estimate their radiative impact, finding that these particles measurably reduced snow albedo and affected the surface energy budget in ways relevant to glacier and snowmelt predictions.
Parametrization of a lake water dynamics model MLake in the ISBA-CTRIP land surface system (SURFEX v8.1)
Researchers parametrized the MLake lake water dynamics model within the ISBA-CTRIP land surface system, demonstrating that incorporating lake mass budgets improves representation of streamflow variability and regional hydrological regimes in climate and hydrological models.
Assessing microplastics pollution in the atmosphere and riverine system in the Pyrenees
This study measured airborne microplastics deposited in the Pyrenees mountains — a remote area far from major urban sources — finding significant contamination in both air deposition and river sediments. The results confirm that microplastics are transported long distances by wind and deposited even in pristine mountain environments. Rivers then act as conduits that transport these atmospherically deposited microplastics toward the ocean.
Air Pollution and Sea Pollution Seen from Space
Researchers reviewed how satellite-based sensors have transformed our understanding of air and ocean pollution, enabling global monitoring of phenomena from smog to marine plastic debris. The paper highlights how improved mapping of small-scale ocean eddies is providing new insights into how pollutants spread and concentrate across the world's seas.