A5009257351- Marine and coastal ecosystems
- Oceanographic and Atmospheric Processes
- Marine and fisheries research
- Water Quality Monitoring and Analysis
- Marine Biology and Ecology Research
- Atmospheric and Environmental Gas Dynamics
- Image Retrieval and Classification Techniques
- Ocean Acidification Effects and Responses
- Image and Object Detection Techniques
- Satellite Image Processing and Photogrammetry
- Microbial Community Ecology and Physiology
- Geophysics and Gravity Measurements
- Constraint Satisfaction and Optimization
- Coastal wetland ecosystem dynamics
- Air Quality Monitoring and Forecasting
- Arctic and Russian Policy Studies
- Remote-Sensing Image Classification
- Atmospheric aerosols and clouds
- Medical Image Segmentation Techniques
- Meteorological Phenomena and Simulations
- Data Management and Algorithms
- Automated Road and Building Extraction
- Atmospheric chemistry and aerosols
- Geomagnetism and Paleomagnetism Studies
- Coastal and Marine Management
Fondation Sophia Antipolis
2019-2021
ACRI Group (France)
1995-2020
Institut national de recherche en informatique et en automatique
1990-2002
Atlantic Cancer Research Institute
1999
Research Centre Inria Sophia Antipolis - Méditerranée
1990
The Ocean State Report is an annual publication of the Copernicus Marine Service that provides a comprehensive and state-of-the-art report on current state, natural variations, ongoing changes in global ocean European regional seas.It meant to act as reference Union for scientific community, international national bodies, general public.Using satellite data, models reanalyses, situ measurements, 4-dimensional view (latitude, longitude, depth, time) blue (e.g.hydrography currents), white...
The Copernicus Marine Services State of Pacific Ocean analysis available data demonstrates that the ocean surrounding Islands is warmer, has higher heat content, with sea level rising at rates
Abstract. This paper concerns the GlobColour-merged chlorophyll a products based on satellite observation (SeaWiFS, MERIS, MODIS, VIIRS and OLCI) disseminated in framework of Copernicus Marine Environmental Monitoring Service (CMEMS). work highlights main advantages provided by GlobColour processor which is used to serve CMEMS with long time series from 1997 present at global level (4 km spatial resolution) for Atlantic 4 product (1 resolution). To compute merged product, two major topics...
The variability of the phytoplankton biomass derived from daily chlorophyll-a (Chl-a) satellite images was investigated over period 1998–2017 in surface waters English Channel and northern Bay Biscay. Merged (SeaWiFS-MODIS/Aqua-MERIS-VIIRS) Chl-a calculated using OC5 Ifremer algorithm which is optimized for moderately-turbid waters. seasonal cycle satellite-derived compared with situ measurements made at seven coastal stations located southern side results firstly showed that product, a...
This study presents an algorithm for globally retrieving chlorophyll a (Chl-a) concentrations of phytoplankton functional types (PFTs) from multi-sensor merged ocean color (OC) products or Sentinel-3A (S3) Ocean and Land Color Instrument (OLCI) data the GlobColour archive in frame Copernicus Marine Environmental Monitoring Service (CMEMS). The retrieved PFTs include diatoms, haptophytes, dinoflagellates, green algae prokaryotic phytoplankton. A previously proposed method to retrieve various...
Abstract First, we retune an algorithm based on empirical orthogonal functions (EOFs) for globally retrieving the chlorophyll a concentration (Chl‐a) of phytoplankton functional types (PFTs) from multisensor merged ocean color (OC) products. The retuned algorithm, referred to as EOF‐SST hybrid is improved by: (i) using 23% more matchups between updated global in situ pigment database and satellite remote sensing reflectance (R rs ) products, (ii) including sea surface temperature (SST)...
The architecture of an image analysis system called MESSIE (Multi Expert System for Scene Interpretation and Evaluation) is presented. This reasons from geometric models which are represented by four concepts (geometry, radiometry, context, function). aim to find the class instances generic present in scene. necessity having a hierarchic opportunistic method solving problem interpretation shown. In first step, tries detect salient objects. Then, using characteristics objects knowledge about...
In the framework of Ocean Colour European Archive Network (OCEAN) programme Commission and Space Agency, a joint team composed ACRI, GM-Images Ecole des Mines de Paris proposed to analyse jointly Coastal Zone Color Scanner (CZCS) (chlorophyll) Advanced Very High Resolution Radiometer (AVHRR) (temperature) data in order study mesoscale dynamics features Gulf Biscay. A large archive AVHRR data, between 1978-1990, was analysed with support EPSHOM (Etablissement Principal du Service...
Abstract. This work concerns the chlorophyll products based on Satellite Observation and disseminated in frame of Copernicus Marine Environmental Monitoring Service (CMEMS). highlights main advantages provided by Globcolour processor which is used to serve CMEMS with a long time series from 1997 present level 3 & 4 at Global (4 km spatial resolution) for Atlantic product (1 km). It discusses different ways merge data coming sensors it shown that GlobColour approach provide better...
<p>The Ocean Colour Instrument (OLCI) on-board the Sentinel-3A and 3B satellites with a 300 m spatial resolution has major advantage compared to other satellite missions typical 1 km resolution. The chlorophyll-a product derived from OLCI’s measurement facilitates many applications in marine coastal ecology, ecosystem modeling, fisheries management, monitoring of water quality. OLCI swath data (Level-2) are operationally disseminated NRT mode by EUMETSAT agency....
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Geophysical Research - Oceans. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v2]Global chlorophyll concentrations phytoplankton functional types with detailed uncertainty assessment using multi-sensor ocean color sea surface temperature...
<p>Half of the global primary production is produced in ocean by phytoplankton and reaction photosynthesis. For marine environment, at basis for food web, supply energy higher trophic levels. Monitor appears therefore to be a guideline reach sustainable fisheries. In addition its role on also important CO<sub>2</sub> fluxes. Indeed, while creates matter from nutrients CO<sub>2</sub>. The can grazed levels or sink towards...