Sea ice extent retrieval with HY-2A scatterometer data and its assessment

被引：5

作者：

Shi Lijian ^{[1
,2
]}

Li Mingming ^{[3
]}

Zhao Chaofang ^{[3
,5
]}

Wang Zhixiong ^{[3
]}

Shi Yingni ^{[3
,4
]}

Zou Juhong ^{[1
,2
]}

Zeng Tao ^{[1
,2
]}

机构：

[1] Natl Satellite Ocean Applicat Serv, Beijing 100081, Peoples R China

[2] State Ocean Adm, Key Lab Space Ocean Remote Sensing & Applicat, Beijing 100081, Peoples R China

[3] Ocean Univ China, Coll Informat Sci & Engn, Qingdao 266100, Peoples R China

[4] PLA, Unit 61741, Beijing 100094, Peoples R China

[5] Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266100, Peoples R China

来源：

ACTA OCEANOLOGICA SINICA | 2017年 / 36卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Antarctica; Arctic; sea ice extent; HY-2A; scatterometer; C-BAND SCATTEROMETER; ENHANCED-RESOLUTION; QUIKSCAT; IDENTIFICATION; CLASSIFICATION;

D O I：

10.1007/s13131-017-1022-2

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

A sea ice extent retrieval algorithm over the polar area based on scatterometer data of 14Y-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.

引用

页码：76 / 83

页数：8

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