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The dual-polarized ratio algorithm (DPR) for the retrieval of Arctic sea ice concentration from Advanced Microwave Scanning Radiometer-EOS (AMSR-E) data was improved using a contrast ratio (CR) parameter. In contrast to three other algorithms (Artist Sea Ice algorithm, ASI; NASA-Team 2 algorithm, NT2; and AMSR-E Bootstrap algorithm, ABA), this algorithm does not use a series of tie-points or a priori...
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