Polar Sea Ice Monitoring Using HY-2A Scatterometer Measurements
AbstractA sea ice detection algorithm based on Fisher’s linear discriminant analysis is developed to segment sea ice and open water for the Ku-band scatterometer onboard the China’s Hai Yang 2A Satellite (HY-2A/SCAT). Residual classification errors are reduced through image erosion/dilation techniques and sea ice growth/retreat constraint methods. The arctic sea-ice-type classification is estimated via a time-dependent threshold derived from the annual backscatter trends based on previous HY-2A/SCAT derived sea ice extent. The extent and edge of the sea ice obtained in this study is compared with the Special Sensor Microwave Imager/Sounder (SSMIS) sea ice concentration data and the Sentinel-1 SAR imagery for verification, respectively. Meanwhile, the classified sea ice type is compared with a multi-sensor sea ice type product based on data from the Advanced Scatterometer (ASCAT) and SSMIS. Results show that HY-2A/SCAT is powerful in providing sea ice extent and type information, while differences in the sensitivities of active/passive products are found. In addition, HY-2A/SCAT derived sea ice products are also proved to be valuable complements for existing polar sea ice data products. View Full-Text
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Li, M.; Zhao, C.; Zhao, Y.; Wang, Z.; Shi, L. Polar Sea Ice Monitoring Using HY-2A Scatterometer Measurements. Remote Sens. 2016, 8, 688.
Li M, Zhao C, Zhao Y, Wang Z, Shi L. Polar Sea Ice Monitoring Using HY-2A Scatterometer Measurements. Remote Sensing. 2016; 8(8):688.Chicago/Turabian Style
Li, Mingming; Zhao, Chaofang; Zhao, Yong; Wang, Zhixiong; Shi, Lijian. 2016. "Polar Sea Ice Monitoring Using HY-2A Scatterometer Measurements." Remote Sens. 8, no. 8: 688.