Title :

Satellite and in situ monitoring of Chl-a, Turbidity, and Total Suspended Matter in coastal waters: experience of the year 2017 along the French Coasts

Author(s) :

Gohin, Francis [Auteur]
Institut Français de Recherche pour l'Exploitation de la Mer [IFREMER]
Bryère, Philippe [Auteur]
Lefebvre, Alain [Auteur]
Laboratoire Environnement Ressources de Boulogne-sur-Mer [LERBL]
Sauriau, Pierre-Guy [Auteur]
LIttoral ENvironnement et Sociétés [LIENSs]
Savoye, Nicolas [Auteur]
Environnements et Paléoenvironnements OCéaniques [EPOC]
Vantrepotte, Vincent [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Bozec, Yann [Auteur]
Station biologique de Roscoff = Roscoff Marine Station [SBR]
Cariou, Thierry [Auteur]
Station biologique de Roscoff = Roscoff Marine Station [SBR]
Fédération de recherche de Roscoff [FR2424]
Conan, Pascal [Auteur]
Laboratoire d'Océanographie Microbienne [LOMIC]
Coudray, Sylvain [Auteur]
Laboratoire Environnement Ressources Provence Azur Corse [LERPAC]
Courtay, Gaëlle [Auteur]
Interactions Hôtes-Pathogènes-Environnements [IHPE]
Institut Français de Recherche pour l'Exploitation de la Mer [IFREMER]
Françoise, Sylvaine [Auteur]
Goffart, Anne [Auteur]
Fariñas, Tania Hernández [Auteur]
Lemoine, Maud [Auteur]
Piraud, Aude [Auteur]
Raimbault, Patrick [Auteur]
Institut méditerranéen d'océanologie [MIO]
Rétho, Michael [Auteur]

Journal title :

Journal of Marine Science and Engineering
Marine Observation and Monitoring towards an Ecosystem Approach)

Pages :

665

Publisher :

MDPI

Publication date :

2020-08-28

ISSN :

2077-1312

English keyword(s) :

satellite
coastal monitoring
Chlorophyll-a
total suspended matter
turbidity
Total suspended matter

HAL domain(s) :

Sciences de l'environnement/Milieux et Changements globaux
Sciences de l'ingénieur [physics]/Traitement du signal et de l'image [eess.SP]

English abstract : [en]

The consistency of satellite and in situ time series of Chlorophyll-a (Chl-a), Turbidity and Total Suspended Matters (TSM) was investigated at 17 coastal stations throughout the year 2017. These stations covered different ...
Show more >The consistency of satellite and in situ time series of Chlorophyll-a (Chl-a), Turbidity and Total Suspended Matters (TSM) was investigated at 17 coastal stations throughout the year 2017. These stations covered different water types, from relatively clear waters in the Mediterranean Sea to moderately turbid regions in the Bay of Biscay and the southern bight of the North-Sea. Satellite retrievals were derived from MODIS/AQUA, VIIRS/NPP and OLCI-A/Sentinel-3 spectral reflectance. In situ data were obtained from the coastal phytoplankton networks SOMLIT (CNRS), REPHY (Ifremer) and associated networks. Satellite and in situ retrievals of the year 2017 were compared to the historical seasonal cycles and percentiles, 10 and 90, observed in situ. Regarding the sampling frequency in the Mediterranean Sea, a weekly in situ sampling allowed all major peaks in Chl-a caught from space to be recorded at sea, and, conversely, all in situ peaks were observed from space in a frequently cloud-free atmosphere. In waters of the Eastern English Channel, lower levels of Chl-a were observed, both in situ and from space, compared to the historical averages. However, despite a good overall agreement for low to moderate biomass, the satellite method, based on blue and green wavelengths, tends to provide elevated and variable Chl-a in a high biomass environment. Satellite-derived TSM and Turbidity were quite consistent with in situ measurements. Moreover, satellite retrievals of the water clarity parameters often showed a lower range of variability than their in situ counterparts did, being less scattered above and under the seasonal curves of percentiles 10 and 90.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL