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High resolution sea ice concentration estimation through the assimilation of classified SAR imagery and AMSR-E sea ice concentration

TitleHigh resolution sea ice concentration estimation through the assimilation of classified SAR imagery and AMSR-E sea ice concentration
Publication TypeJournal Article
Year of Publication2015
AuthorsWang, L., A. K. Scott, and D. A. Clausi
JournalIEEE Transactions on Geoscience and Remote Sensing
Abstract

A method to automatically assimilate information from synthetic aperture radar (SAR) sea-ice images with the AMSR-E (Advanced Microwave Scanning Radiometer-EOS) daily ice concentration product is proposed for the purpose of generating high resolution sea ice concentration estimates.First, each pixel is labelled in the SAR images as ice or water using the MAGIC (MAp-Guided Ice Classification) SAR image sea ice classification system. Then, the labelled pixels are modeled as a Bernoulli process and assimilated with the AMSR-E ice concentration data in a Bayesian framework. For the purpose of verification, visually interpreted ice/water extent, IMS (Interactive Multi-sensor Snow and Ice Mapping System) ice extent and sea ice image analysis from the CIS(Canadian Ice Service) are used. The results show a positive impact in ice concentration estimation by the assimilation of SAR ice/water labelled pixels with the AMSR-E ice concentration product.Substantial improvements are observed at the ice edges.