| SHI Lijian,LI Mingming,ZHAO Chaofang,WANG Zhixiong,SHI Yingni,ZOU Juhong,ZENG Tao. 2017. Sea ice extent retrieval with HY-2A scatterometer data and its assessment. Acta Oceanologica Sinica, 36(8):76－83 |
| Sea ice extent retrieval with HY-2A scatterometer data and its assessment |
| 基于HY-2A散射计数据的极区海冰范围反演方法及其评估 |
| Received:May 23, 2016 |
| DOI：10.1007/s13131-017-1022-2 |
| Key words:Antarctica Arctic sea ice extent HY-2A scatterometer |
| 中文关键词: 南极 北极 海冰范围 HY-2A 散射计 |
| 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. |
| Author Name | Affiliation | E-mail | | SHI Lijian | National Satellite Ocean Application Service, Beijing 100081, China
Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China | shilj@mail.nsoas.org.cn | | LI Mingming | College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China | | | ZHAO Chaofang | 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 | | | WANG Zhixiong | College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China | | | SHI Yingni | College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China
Unit 61741 of PLA, Beijing 100094, China | | | ZOU Juhong | National Satellite Ocean Application Service, Beijing 100081, China
Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China | | | ZENG Tao | National Satellite Ocean Application Service, Beijing 100081, China
Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China | |
|
| Hits: 2199 |
| Download times: 1929 |
| 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. |
| 中文摘要: |
| 本文发展了一种基于HY-2A卫星散射计数据反演极区海冰范围的算法。基于散射计数据获取的四个参数，利用Fisher线性判别分析方法进行冰水区分。基于上述方法，利用2013-2014年HY-2A卫星散射计的后向散射数据获取了南北极区域的海冰范围。这一时间序列的数据能够充分反应极区海冰的消融与冻结，并与利用SSMIS辐射计海冰密集度产品一致，都反映了类似的极区海冰面积季节变化，其中利用HY-2A散射计数据获取的两极海冰面积与利用15%作为SSMIS海冰密集度数据阈值计算的海冰面积更为一致。通过和SAR图像比较，HY-2A散射计获取的海冰边缘与Sentinal-1 SAR的海冰边缘呈现较好的相关性，部分区域的差异主要是由于海冰动态漂移造成的。 |
|
HTML
View Full Text
View/Add Comment Download reader |
| Close |
|
|
|
