| 基于HY-2A散射计数据的极区海冰范围反演方法及其评估 |
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| 引用本文： | 石立坚,李明明,赵朝方,王志雄,施英妮,邹巨洪,曾韬.基于HY-2A散射计数据的极区海冰范围反演方法及其评估[J].海洋学报(英文版),2017,36(8):76-83. |
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| 作者姓名： | 石立坚 李明明 赵朝方 王志雄 施英妮 邹巨洪 曾韬 |
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| 作者单位： | 国家卫星海洋应用中心, 北京, 100081, 中国;国家海洋局空间海洋遥感与应用研究重点实验室, 北京, 100081, 中国,中国海洋大学信息科学与工程学院, 青岛, 266100, 中国,中国海洋大学信息科学与工程学院, 青岛, 266100, 中国;青岛海洋科学与技术国家实验室区域海洋动力学与数值模拟功能实验室, 青岛, 266100, 中国,中国海洋大学信息科学与工程学院, 青岛, 266100, 中国,中国海洋大学信息科学与工程学院, 青岛, 266100, 中国;中国人民解放军 61741部队, 北京, 100094, 中国,国家卫星海洋应用中心, 北京, 100081, 中国;国家海洋局空间海洋遥感与应用研究重点实验室, 北京, 100081, 中国,国家卫星海洋应用中心, 北京, 100081, 中国;国家海洋局空间海洋遥感与应用研究重点实验室, 北京, 100081, 中国 |
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| 基金项目： | The National Key Research and Development Program of China under contract Nos 2016YFC1402704 and 2016YFC1401007; the Open Research Fund of Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences under contract No. 2014LDE009; the International Science and Technology Cooperation Project of China under contract No. 2011DFA22260; the National Natural Science Foundation of China under contract Nos U1606405 and 41276181; the Chinese Polar Environment Comprehensive Investigation & Assessment Program by the State Oceanic Administration under contract Nos 2015-02-04 and 2015-04-03-02. |
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| 摘 要： | A sea ice extent retrieval algorithm over the polar area based on scatterometer data of HY-2A satellite has been established.Four parameters are used for distinguishing between sea ice and ocean with Fisher's linear discriminant analysis method.The method is used to generate polar sea ice extent maps of the Arctic and Antarctic regions of the full 2013–2014 from the scatterometer aboard HY-2A(HY-2A-SCAT) backscatter data.The time series of the ice mapped imagery shows ice edge evolution and indicates a similar seasonal change trend with total ice area from DMSP-F17 Special Sensor Microwave Imager/Sounder(SSMIS) sea ice concentration data.For both hemispheres,the HY-2A-SCAT extent correlates very well with SSMIS 15% extent for the whole year period.Compared with Synthetic Aperture Radar(SAR) imagery,the HY-2A-SCAT ice extent shows good correlation with the Sentinel-1 SAR ice edge.Over some ice edge area,the difference is very evident because sea ice edges can be very dynamic and move several kilometers in a single day.
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| 关 键 词： | 南极 北极 海冰范围 HY-2A 散射计 |
| 收稿时间： | 2016/5/23 0:00:00 |
Sea ice extent retrieval with HY-2A scatterometer data and its assessment |
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| SHI Lijian,LI Mingming,ZHAO Chaofang,WANG Zhixiong,SHI Yingni,ZOU Juhong and ZENG Tao.Sea ice extent retrieval with HY-2A scatterometer data and its assessment[J].Acta Oceanologica Sinica,2017,36(8):76-83. |
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| Authors: | SHI Lijian LI Mingming ZHAO Chaofang WANG Zhixiong SHI Yingni ZOU Juhong and ZENG Tao |
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| Affiliation: | National Satellite Ocean Application Service, Beijing 100081, China;Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China,College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China,College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China;Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China,College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China,College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China;Unit 61741 of PLA, Beijing 100094, China,National Satellite Ocean Application Service, Beijing 100081, China;Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China and National Satellite Ocean Application Service, Beijing 100081, China;Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China |
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| Abstract: | A sea ice extent retrieval algorithm over the polar area based on scatterometer data of HY-2A satellite has been established. Four parameters are used for distinguishing between sea ice and ocean with Fisher''s linear discriminant analysis method. The method is used to generate polar sea ice extent maps of the Arctic and Antarctic regions of the full 2013-2014 from the scatterometer aboard HY-2A (HY-2A-SCAT) backscatter data. The time series of the ice mapped imagery shows ice edge evolution and indicates a similar seasonal change trend with total ice area from DMSP-F17 Special Sensor Microwave Imager/Sounder (SSMIS) sea ice concentration data. For both hemispheres, the HY-2A-SCAT extent correlates very well with SSMIS 15% extent for the whole year period. Compared with Synthetic Aperture Radar (SAR) imagery, the HY-2A-SCAT ice extent shows good correlation with the Sentinel-1 SAR ice edge. Over some ice edge area, the difference is very evident because sea ice edges can be very dynamic and move several kilometers in a single day. |
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| Keywords: | Antarctica Arctic sea ice extent HY-2A scatterometer |
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