气候变化领域集成服务门户(CCPortal): Arctic Sea Ice Volume Export Through Fram Strait From 1992 to 2014

CCPortal

DOI	10.1029/2019JC016039
	Arctic Sea Ice Volume Export Through Fram Strait From 1992 to 2014
	Spreen G.; de Steur L.; Divine D.; Gerland S.; Hansen E.; Kwok R.
发表日期	2020
ISSN	21699275
卷号	125 期号:6
英文摘要	The Fram Strait sea ice volume export 1992–2014 is derived by combining sea ice thickness from upward looking sonars (ULS) with satellite observations of sea ice drift and area. Fram Strait is the main gate for sea ice export from the Arctic. The average yearly sea ice export is 2,400 ± 640 km3. The mean and modal ULS ice thickness in Fram Strait decreased by 15% and 21% per decade, respectively, during 1990–2014. Combined with sea ice drift and area this leads to a decrease of the Arctic sea ice volume export of 27 ± 2% per decade between 1992 and 2014. Thus, for the given time period, changes in sea ice export do not drive the sea ice volume decrease in the Arctic Basin. However, for individual years like 2007 and 2012 the ice export likely has contributed to the loss of summer sea ice. Combined with PIOMAS model simulation we estimate that 14% of the total Arctic sea ice volume is exported every year through Fram Strait. This fraction of the total sea ice volume exported per year does not show a trend because the Arctic Basin ice volume is decreasing at a similar rate as the Fram Strait ice volume export. Compared to ice velocities from Acoustic Doppler Current Profiler (ADCP) the satellite ice drift shows good correspondence in variability but a negative bias. Ice volume transport estimates presented here thus should be considered a conservative estimate. We show, however, that the transport estimates are not sensitive to the exact flux gate location. ©2020. The Authors.
英文关键词	Arctic climate change; Fram Strait; ice export; ice thickness; sea ice
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/186850
作者单位	Norwegian Polar Institute, Tromsø, Norway; Institute of Environmental Physics, University of Bremen, Bremen, Germany; Multiconsult, Tromsø, Norway; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Spreen G.,de Steur L.,Divine D.,et al. Arctic Sea Ice Volume Export Through Fram Strait From 1992 to 2014[J],2020,125(6).
APA	Spreen G.,de Steur L.,Divine D.,Gerland S.,Hansen E.,&Kwok R..(2020).Arctic Sea Ice Volume Export Through Fram Strait From 1992 to 2014.Journal of Geophysical Research: Oceans,125(6).
MLA	Spreen G.,et al."Arctic Sea Ice Volume Export Through Fram Strait From 1992 to 2014".Journal of Geophysical Research: Oceans 125.6(2020).