气候变化领域集成服务门户(CCPortal): Retrieval of Antarctic sea ice freeboard and thickness from HY-2B satellite altimeter data

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DOI	10.1007/s13131-023-2250-2
	Retrieval of Antarctic sea ice freeboard and thickness from HY-2B satellite altimeter data
	Chen, Yizhuo; Pang, Xiaoping; Ji, Qing; Yan, Zhongnan; Liang, Zeyu; Zhang, Chenlei
发表日期	2024
ISSN	0253-505X
EISSN	1869-1099
起始页码	43
结束页码	3
卷号	43 期号:3
英文摘要	Antarctic sea ice is an important part of the Earth's atmospheric system, and satellite remote sensing is an important technology for observing Antarctic sea ice. Whether Chinese Haiyang-2B (HY-2B) satellite altimeter data could be used to estimate sea ice freeboard and provide alternative Antarctic sea ice thickness information with a high precision and long time series, as other radar altimetry satellites can, needs further investigation. This paper proposed an algorithm to discriminate leads and then retrieve sea ice freeboard and thickness from HY-2B radar altimeter data. We first collected the Moderate-resolution Imaging Spectroradiometer ice surface temperature (IST) product from the National Aeronautics and Space Administration to extract leads from the Antarctic waters and verified their accuracy through Sentinel-1 Synthetic Aperture Radar images. Second, a surface classification decision tree was generated for HY-2B satellite altimeter measurements of the Antarctic waters to extract leads and calculate local sea surface heights. We then estimated the Antarctic sea ice freeboard and thickness based on local sea surface heights and the static equilibrium equation. Finally, the retrieved HY-2B Antarctic sea ice thickness was compared with the CryoSat-2 sea ice thickness and the Antarctic Sea Ice Processes and Climate (ASPeCt) ship-based observed sea ice thickness. The results indicate that our classification decision tree constructed for HY-2B satellite altimeter measurements was reasonable, and the root mean square error of the obtained sea ice thickness compared to the ship measurements was 0.62 m. The proposed sea ice thickness algorithm for the HY-2B radar satellite fills a gap in this application domain for the HY-series satellites and can be a complement to existing Antarctic sea ice thickness products; this algorithm could provide long-time-series and large-scale sea ice thickness data that contribute to research on global climate change.
英文关键词	HY-2B satellite altimeter; classification decision tree; sea ice freeboard and thickness; Antarctic waters
语种	英语
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:001210829000002
来源期刊	ACTA OCEANOLOGICA SINICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302727
作者单位	Wuhan University; Ministry of Natural Resources of the People's Republic of China; Anhui Normal University
推荐引用方式 GB/T 7714	Chen, Yizhuo,Pang, Xiaoping,Ji, Qing,et al. Retrieval of Antarctic sea ice freeboard and thickness from HY-2B satellite altimeter data[J],2024,43(3).
APA	Chen, Yizhuo,Pang, Xiaoping,Ji, Qing,Yan, Zhongnan,Liang, Zeyu,&Zhang, Chenlei.(2024).Retrieval of Antarctic sea ice freeboard and thickness from HY-2B satellite altimeter data.ACTA OCEANOLOGICA SINICA,43(3).
MLA	Chen, Yizhuo,et al."Retrieval of Antarctic sea ice freeboard and thickness from HY-2B satellite altimeter data".ACTA OCEANOLOGICA SINICA 43.3(2024).