气候变化领域集成服务门户(CCPortal): A Preliminary Investigation of Arctic Sea Ice Negative Freeboard from in-situ Observations and Radar Altimetry

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DOI	10.1007/s11802-021-4380-5
	A Preliminary Investigation of Arctic Sea Ice Negative Freeboard from in-situ Observations and Radar Altimetry
	Li Shutong; Dou Tingfeng; Xiao Cunde
通讯作者	Dou, TF (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China. ; Dou, TF (通讯作者)，Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China.
发表日期	2021
ISSN	1672-5182
EISSN	1993-5021
起始页码	307
结束页码	314
卷号	20 期号:2
英文摘要	The negative freeboard of sea ice (i.e., the height of ice surface below sea level) with subsequent flooding is widespread in the Southern Ocean, as opposed to the Arctic, due to the relatively thicker ice and thinner snow. In this study, we used the observations of snow and ice thickness from 103 ice mass balance buoys (IMBs) and NASA Operation IceBridge Aircraft Missions to investigate the spatial distribution of negative freeboard of Arctic sea ice. The Result showed that seven IMBs recorded negative freeboards, which were sporadically located in the seas around Northeast Greenland, the Central Arctic Ocean, and the marginal areas of the Chukchi-Beaufort Sea. The observed maximum values of negative freeboard could reach -0.12 m in the seas around Northeast Greenland. The observations from IceBridge campaigns also revealed negative freeboard comparable to those of IMBs in the seas around North Greenland and the Beaufort Sea. We further investigated the large-scale distribution of negative freeboard using NASA CryoSat-2 radar altimeter data, and the result indicates that except for the negative freeboard areas observed by IMBs and IceBridge, there are negative freeboards in other marginal seas of the Arctic Ocean. However, the comparison of the satellite data with the IMB data and IceBridge data shows that the Cryosat-2 data generally overestimate the extent and magnitude of the negative freeboard in the Arctic.
关键词	SNOW DEPTH GROWTH-PROCESSES CRYOSAT-2 THICKNESS RETRIEVAL NORTH GULF MELT
英文关键词	Arctic sea ice; negative freeboard; ice mass balance buoy; IceBridge; CryoSat-2
语种	英语
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000626662500007
来源期刊	JOURNAL OF OCEAN UNIVERSITY OF CHINA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253824
作者单位	[Li Shutong; Dou Tingfeng; Xiao Cunde] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Li Shutong; Dou Tingfeng] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; [Xiao Cunde] Beijing Normal Univ, State Key Lab Land Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Li Shutong,Dou Tingfeng,Xiao Cunde. A Preliminary Investigation of Arctic Sea Ice Negative Freeboard from in-situ Observations and Radar Altimetry[J]. 中国科学院西北生态环境资源研究院,2021,20(2).
APA	Li Shutong,Dou Tingfeng,&Xiao Cunde.(2021).A Preliminary Investigation of Arctic Sea Ice Negative Freeboard from in-situ Observations and Radar Altimetry.JOURNAL OF OCEAN UNIVERSITY OF CHINA,20(2).
MLA	Li Shutong,et al."A Preliminary Investigation of Arctic Sea Ice Negative Freeboard from in-situ Observations and Radar Altimetry".JOURNAL OF OCEAN UNIVERSITY OF CHINA 20.2(2021).