气候变化领域集成服务门户(CCPortal): Sea Surface Salinity as a Proxy for Arctic Ocean Freshwater Changes

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DOI	10.1029/2020JC016110
	Sea Surface Salinity as a Proxy for Arctic Ocean Freshwater Changes
	Fournier S.; Lee T.; Wang X.; Armitage T.W.K.; Wang O.; Fukumori I.; Kwok R.
发表日期	2020
ISSN	21699275
卷号	125 期号:7
英文摘要	The changing Arctic freshwater content and distribution have a significant implications for ocean circulation, climate, and water and biogeochemical cycles. The paucity of in situ salinity measurements in the Arctic Ocean has limited our ability to study Arctic-Ocean freshwater variability. Although satellite-derived sea surface height (SSH) and ocean bottom pressure (OBP) have been used together to infer depth-integrated freshwater content changes, these measurements are limited in sampling and resolution. Motivated by the recent development of sea surface salinity (SSS) remote sensing, we explore the use of SSS as a proxy for Arctic freshwater changes. As a first step, here we conduct a proof-of-concept study by analyzing the output of an ocean-ice state estimation product. We find that SSS variations are coherent with those of SSH-minus-OBP across the Arctic basin (with R ~ −0.8) except for those in the center of the Beaufort Gyre and the region affected by the subpolar North Atlantic inflow. On Arctic shelves, the linear regression coefficient between SSS and SSH-minus-OBP is −0.3 pss/cm or larger in magnitude. The results suggest that SSS is a good proxy for Arctic freshwater changes, and satellite SSH-minus-OBP can be used to evaluate satellite SSS quality. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Arctic; freshwater; gravimetry; sea surface height; sea surface salinity
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/186796
作者单位	Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Joint Institute for Regional Earth System Science and Engineering, University of California Los Angeles, Los Angeles, CA, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States
推荐引用方式 GB/T 7714	Fournier S.,Lee T.,Wang X.,et al. Sea Surface Salinity as a Proxy for Arctic Ocean Freshwater Changes[J],2020,125(7).
APA	Fournier S..,Lee T..,Wang X..,Armitage T.W.K..,Wang O..,...&Kwok R..(2020).Sea Surface Salinity as a Proxy for Arctic Ocean Freshwater Changes.Journal of Geophysical Research: Oceans,125(7).
MLA	Fournier S.,et al."Sea Surface Salinity as a Proxy for Arctic Ocean Freshwater Changes".Journal of Geophysical Research: Oceans 125.7(2020).