IWWOC Antarctic Sea Ice Backscatter Gridded Level 3 Composite from SCAT onboard CFOSAT ...

• Main Author: Ardhuin, Fanny
• Format: Dataset
• Language: unknown
• Published: Ifremer / CERSAT 2022
• Subjects: Oceanographic geographical features; Sea Ice; CFOSAT; Less than 4 days; /Sea Ice/Ice Roughness; /Sea Ice/Ice Extent; CDS-SAT-CERSAT; /Physical Oceanography/Sea Ice; /Remote sensing; Remote sensing; Antarctic; Antarc*; Sea ice
• Online Access: https://dx.doi.org/10.12770/1241fd87-dfc6-4be1-9bfe-7bc222f9d785; https://sextant.ifremer.fr/record/1241fd87-dfc6-4be1-9bfe-7bc222f9d785

Backscatter values over sea ice are a function of incidence angle and the sea ice type. With several SCAT incidence measurements, an incidence adjustment is mandatory over sea ice (Gohin and Cavanié 1994) to map daily averaged backscatter values accurately for geophysical use as it was done for the NSCAT Ku-band sensor. An incidence-adjustment backscatter map at 40° incidence angle is thus built in order to have reliable daily averaged backscatter maps. This dataset contains antarctic polar stereographic 12 km resolution grids of averaged backscatter coefficient from SCAT onboard CFOSAT scatterometer over sea-ice, for each polarization (HH and VV). CFOSAT (Chinese French Ocean SATellite) is a french-chinese mission launched in 2018, whose aim is to provide wind (SCAT instrument) and wave (SWIM instrument) measurements over the sea surface. The grids are derived from swath sigma-naught data (CWWIC SCAT Level 1A product), averaged over one day. Sea ice roughness from the scatterometer backscatter can be used ...