The update of the coastal topo-bathymetric DEM of the Pertuis charentais at a resolution of 0.0002° (~ 20 m) was carried out in the third phase of the HOMONIM project. The DEM extends from the terrestrial domain to about 60 meters depth over all the pertuis (pertuis Breton, pertuis d’Antioche and pertuis of Maumusson). The DEM is intended to be implemented in hydrodynamic models in order to produce forecasts as accurate as possible of water heights and sea states at the coast to improve the relevance of the Wave-Submergence Vigilance. This product is available with either the Lowest Astronomic Tide (LAT) or the Mean Sea Level (MSL) as a vertical reference.

Monthly mean of absorption coefficient minus water absorption (anw) at 412nm (2002-2012) for coastal areas, at global scale, for MERIS sensor, with POLYMER atmospheric corrections. Ref: Loisel (in prep)

Monthly mean of backscattering coefficient (bbp) at 490nm (2002-2012) for coastal areas, at global scale, for MERIS sensor, with POLYMER atmospheric corrections. Ref: Loisel in prep.

Monthly mean of colored dissolved organic matter absorption (acdom) at 412 nm (2002-2012) for coastal areas, at global scale, for MERIS sensor, with POLYMER atmospheric corrections. Ref: V Vantrepotte, F Danhiez, H Loisel, S Ouillon, X Mériaux, A Cauvin and D Dessailly. CDOM-DOC relationship in contrasted coastalwaters: implication for DOC retrieval from ocean color remote sensing observation. OPTICS EXPRESS 33 Vol. 23, No. 1 DOI:10.1364/OE.23.000033 2015

Monthly mean of diffuse attenuation coefficient (Kd) at 490nm (2002-2012), from Jamet et al (2012), for coastal areas, at global scale, for MERIS sensor, with POLYMER atmospheric corrections. Ref: Jamet et al, Retrieval of the spectral diffuse attenuation coefficient Kd(l) in open and coastal ocean waters using a neural network inversion, J. Geophys. Res., 117, C10023, doi:10.1029/2012JC008076.

The update of the coastal topo-bathymetric DEM of the Gironde estuary - downstream with a resolution of 0.0002° (~ 20 m) was carried out in the third phase of the HOMONIM project. This DEM covers the downstream part of the Gironde estuary, from Pauillac to its mouth. It is complementary to the DEM covering the upstream estuary. The DEM is intended to be implemented in hydrodynamic models in order to produce forecasts as accurate as possible of water heights and sea states at the coast to improve the relevance of the Wave-Submergence Vigilance. This product is available with either the Lowest Astronomic Tide (LAT) or the Mean Sea Level (MSL) as a vertical reference.

The update of the coastal topo-bathymetric DEM of the Gironde estuary - upstream with a resolution of 0.0002° (~ 20 m) was carried out in the third phase of the HOMONIM project. This DEM covers the upstream part of the Gironde estuary, from Pauillac to Bordeaux on the Garonne and to Libourne on the Dordogne. It is complementary to the DEM covering the downstream estuary (between Pauillac and the mouth of the Gironde). The DEM is intended to be implemented in hydrodynamic models in order to produce forecasts as accurate as possible of water heights and sea states at the coast to improve the relevance of the Wave-Submergence Vigilance. This product is available with either the Lowest Astronomic Tide (LAT) or the Mean Sea Level (MSL) as a vertical reference.

The coastal topobathymetric DEM of Ré Island's surroundings, with a resolution of 0.00005° (~5 meters), was created by Shom as part of the HOMONIM-3 project. It covers the coast of the municipalities of Ars-en-Ré and Saint-Clément-des-Baleines, extending offshore to a depth of about 20 meters, to the west of the Phare des Baleines lighthouse. This DEM is designed for use in hydrodynamic models to enhance the modeling of coastal processes, particularly forecasting submersion risk. The product complements the coastal topobathymetric DEM of the Pertuis-Charentais, with a resolution of 0.0002° (~20 meters), and the bathymetric DEM of the Atlantic coast, with a resolution of 0.001° (~100 meters). It is available in the vertical reference of the Lowest Astronomical Tide (LAT) or the Mean Sea Level (MSL).

"Aids ton navigation" product contains a description of landmarks, beaconage or buoyage, in the French Exclusive Economic Zone (EEZ). <br /> June 21 2024 version

Monthly mean of Dissolved Organic Carbone (DOC) (2002-2012) for coastal areas, at global scale, for MERIS sensor, with POLYMER atmospheric corrections. Ref: V Vantrepotte, F Danhiez, H Loisel, S Ouillon, X Mériaux, A Cauvin and D Dessailly. CDOM-DOC relationship in contrasted coastalwaters: implication for DOC retrieval from ocean color remote sensing observation. OPTICS EXPRESS 33 Vol. 23, No. 1 DOI:10.1364/OE.23.000033 2015