ERS-1 Arctic daily sea ice extent and backscatter maps

• Main Authors: Verhoef, Anton, Belmonte Rivas, Maria, Stoffelen, Ad
• Format: Dataset
• Language: unknown
• Published: Royal Netherlands Meteorological Institute (KNMI) 2018
• Subjects: antarctic; scatterometer; sea ice extent; radar backscatter; ice age; ice type; ice class; Antarctic; Arctic; Antarc*; Sea ice
• Online Access: https://dx.doi.org/10.21944/ers_1_nh_sea_ice_v1.0; https://scatterometer.knmi.nl/ice_extents/

The sea ice extent and normalized backscatter from the AMI scatterometer on ERS-1 result from the Bayesian discrimination of measured backscatter distances to prescribed ocean wind and sea ice geophysical model functions. The sea ice product contains the Bayesian sea ice probability and a proxy age of sea ice mapped onto 12.5 km polar stereographic grids. The sea ice extent is formed when the sea ice probability crosses a certain threshold, and the proxy age of sea ice is converted to (normalized VV C-band) sea ice backscatter using the instructions detailed in the User Manual.