Monthly mean of chlorophyll-a (2002-2012) from Gohin (2002), for coastal areas, at global scale, for MERIS sensor, with POLYMER atmospheric corrections. Ref: F. Gohin , J. N. Druon & L. Lampert, A five channel chlorophyll concentration algorithm applied to SeaWiFS data processed by SeaDAS in coastal waters. IJRS Volume 23, 2002 - Issue 8 http://dx.doi.org/10.1080/01431160110071879 2002

Seabed shear stress (in N.m-2) is a measure of the friction of water on the seabed due to waves and currents. The 90th percentile over the available period is used as layer for habitat models prediction.

90th percentile calculated during the productive period of the WFD (March-October) from 2015 to 2020, from the MODIS Chl-a algorithm processed by OC5 IFREMER/ARGANS (Gohin et al 2002, Gohin 2011).

Map of average monthly non-algal suspended matter carried out in the period 2003-2010. TSS are estimated from the water reflectance using a specific algorithm developed at Ifremer.

Average monthly turbidity maps made during the period 2003-2010. Turbidity is estimated from the concentrations of inorganic suspended materials and chlorophyll-a.

90th percentile of non-algal suspended matter calculated during the productive period of the WFD (March-October) from 2015 to 2020, from the MODIS algorithm processed by OC5 IFREMER/ARGANS (Gohin et al 2002, Gohin 2011).