GCOM-W1 AMSR2 and MetOp-A ASCAT wind speeds for the extratropical cyclones over the North Atlantic

摘要: Abstract This study presents the results of comparison between sea surface wind speed (SWS) estimates made by MetOp-A scatterometer ASCAT and GCOM-W1 Advanced Microwave Sounding Radiometer 2 (AMSR2) relating to winds developing in extratropical cyclones (ECs) over North Atlantic. One season winter ECs 2012–2013 is considered which 33 most intensive are selected for study. Level operational coastal vector product used comparison, whereas AMSR2 SWS values calculated with newly developed algorithms. Two algorithms retrieval from based on numerical simulation brightness temperatures ( T B ) oceans their following inversion Neural Networks. The first algorithm uses measurements at higher frequency channels (HF algorithm), second one lower (LF algorithm). It demonstrated that both highly correlated range low moderate speeds opens new potential possible merging active passive microwave products. shown also LF overestimates greater than 15 m/s. To support validated against in-situ platform weather stations Sea Norwegian Sea, including high events.