A5052521496- Oceanographic and Atmospheric Processes
- Climate variability and models
- Ocean Waves and Remote Sensing
- Arctic and Antarctic ice dynamics
- Geological and Geophysical Studies
- Marine and fisheries research
- Underwater Acoustics Research
- Geophysics and Gravity Measurements
- Atmospheric and Environmental Gas Dynamics
Centre National de la Recherche Scientifique
2021-2024
Institut de Recherche pour le Développement
2021-2024
Laboratoire d’Océanologie et de Géosciences
2024
Université de Bretagne Occidentale
2021-2023
Ifremer
2021-2023
Laboratory for Ocean Physics and Satellite Remote Sensing
2021-2023
The increase of atmospheric CO2 levels by as much about 10% since the beginning 21st century and its impact on Earth’s climate biosphere represent a major concern. Based compilation in situ data extrapolated over global coastal ocean, previous studies indicate that world’s shelves absorb 0.25 Pg C/year (~17% oceanic influx), although these areas only 7% surface area. However, large uncertainties carbon fluxes stocks exists due to their under sampling both space time. Moreover, all methods...
Effective monitoring of Dissolved Organic Carbon (DOC) from space is crucial for tracking carbon stocks and understanding fluctuations in both coastal open ocean environments. As part the OCROC project, founded by Copernicus Marine Service, we have enhanced existing Ocean Land Color Instrument (OLCI) DOC algorithm, designed to leverage data historical current color sensors. This algorithm initially used four key inputs: absorption coefficient Colored Matter (acdom), chlorophyll-a...
Carbon monitoring from space is critical for the reporting and verification of carbon stocks changes in both coastal open ocean waters. In frame OCROC project, funded by Copernicus 2 – 1st Service Evolution Call Tenders (2022-2024), we focus on particulate (POC) dissolved (DOC) organic surface oceanic waters, which represent two components total (TOC) pool ocean. The present presentation mainly dedicated to estimation DOC, main contributor TOC, over An enhanced version Ocean Land...
The monsoon freshwater and wind forcing drive high Sea Surface Salinity (SSS) contrasts variability (up to 10 pss range) in the Bay of Bengal (BoB), with important consequences for upper ocean mixing air-sea interactions. Synoptic SSS maps did only become available advent L-band radiometers 2010, due insufficient prior situ data coverage. Here, we build tools aiming at reconstructing monthly BoB ¼° resolution since 2002 from AMSR-E radiometer data. C-band low sensitivity requires a very...
The Bay of Bengal (BoB) Sea Surface Salinity (SSS) is highly contrasted and variable, in response to the large monsoonal wind freshwater forcing. In addition this strong seasonal cycle, previous studies have underlined SSS non-seasonal variations associated with Indian Ocean Dipole (IOD) mesoscale eddies. study, we quantify relative contributions externally forced (wind, freshwater) internally generated (mesoscale eddies) variability BoB. To that end, use General Circulation Model 10-member...
<p>The Bay of Bengal is under the influence monsoon and has a highly contrasted variable Sea Surface Salinity (SSS). In situ salinity data however too sparse to reconstruct interannual SSS variability prior synoptic mapping SMOS launched in 2009.</p><p>Previous studies have demonstrated ability X minus C-band measurements, such as those AMSR-E (May 2002-Oct 2011), track changes high-contrast regions at high Temperature (SST). Here, we apply this...
<p>Salinity plays an important role in the oceanic circulation, because of its impact on pressure gradients and upper ocean stability. This is particularly case North Indian Ocean where freshwater inputs from monsoonal rain rivers into Bay Bengal strong evaporation Arabian Sea leads to high salinity contrasts, a variability tied large currents seasonal cycle.</p><p>In situ data however too sparse allow detailed study contrasted variable Northern...