气候变化领域集成服务门户(CCPortal): Decadal Variations of Sea Ice Thickness in the Amundsen-Bellingshausen and Weddell Seas Retrieved From ICESat and IceBridge Laser Altimetry, 2003

CCPortal

DOI	10.1029/2020JC016077
	Decadal Variations of Sea Ice Thickness in the Amundsen-Bellingshausen and Weddell Seas Retrieved From ICESat and IceBridge Laser Altimetry, 2003–2017
	Wang X.; Jiang W.; Xie H.; Ackley S.; Li H.
发表日期	2020
ISSN	21699275
卷号	125 期号:7
英文摘要	The changing distributions of sea ice thickness in different regions around Antarctica are important metrics of climate variability, but estimates have large uncertainties. Here, we analyze laser altimetry data from ICESat and IceBridge to generate a record of total freeboard and sea ice thickness in the Amundsen-Bellingshausen and Weddell seas during austral springs from 2003 to 2017. We improve the buoyancy approach (BOC) to estimate sea ice thickness from total freeboard without altimetry-coincident measurements of snow depth. The sea ice thickness estimated by the improved BOC agrees well with field measurements and is slightly larger than those derived by previous approaches of zero ice freeboard and empirical relationship. The average sea ice thickness had large interannual variations with no significant trend in both seas from 2003 to 2017. Although sea ice thickness usually did not covary with sea ice extent in these regions, sea ice thickness showed a similar rapid decline with ice extents in the Weddell Sea during 2014–2017. The nearly continuous long-term record of sea ice thickness is of great significance for the sea ice and global climatic model communities, especially given the future extension of the record using measurements from ICESat-2 launched in late 2018. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Amundsen-Bellingshausen and Weddell seas; IceBridge; ICESat; sea ice thickness; total freeboard
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186782
作者单位	School of Geography and Planning, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Engineering Research Center for Public Security and Disasters, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Center for Advanced Measurements in Extreme Environments and Department of Geological Sciences, University of Texas at San Antonio, San Antonio, TX, United States; School of Earth and Space Sciences, Peking University, Beijing, China
推荐引用方式 GB/T 7714	Wang X.,Jiang W.,Xie H.,等. Decadal Variations of Sea Ice Thickness in the Amundsen-Bellingshausen and Weddell Seas Retrieved From ICESat and IceBridge Laser Altimetry, 2003–2017[J],2020,125(7).
APA	Wang X.,Jiang W.,Xie H.,Ackley S.,&Li H..(2020).Decadal Variations of Sea Ice Thickness in the Amundsen-Bellingshausen and Weddell Seas Retrieved From ICESat and IceBridge Laser Altimetry, 2003–2017.Journal of Geophysical Research: Oceans,125(7).
MLA	Wang X.,et al."Decadal Variations of Sea Ice Thickness in the Amundsen-Bellingshausen and Weddell Seas Retrieved From ICESat and IceBridge Laser Altimetry, 2003–2017".Journal of Geophysical Research: Oceans 125.7(2020).