Impact of sea ice transport on Beaufort Gyre liquid freshwater content

doi:10.1007/s00382-022-06615-4

CORC > 海洋研究所 > 中国科学院海洋研究所

	Impact of sea ice transport on Beaufort Gyre liquid freshwater content
	Cornish, Sam B.1; Muilwijk, Morven 2,4,5; Scott, Jeffery R.3; Marson, Juliana M.6,7; Myers, Paul G.6; Zhang, Wenhao 8,9; Wang, Qiang 9; Kostov, Yavor 10; Johnson, Helen L.1; Marshall, John 3
刊名	CLIMATE DYNAMICS
	2023-01-26
页码	17
关键词	Beaufort Gyre Freshwater Sea ice
ISSN号	0930-7575
DOI	10.1007/s00382-022-06615-4
通讯作者	Cornish, Sam B.(sam.cornish@earth.ox.ac.uk)
英文摘要	The Arctic Ocean's Beaufort Gyre (BG) is a wind-driven reservoir of relatively fresh seawater, situated beneath time-mean anticyclonic atmospheric circulation, and is covered by mobile pack ice for most of the year. Liquid freshwater accumulation in and expulsion from this gyre is of critical interest due to its potential to affect the Atlantic meridional overturning circulation and due to the importance of freshwater in modulating vertical fluxes of heat, nutrients and carbon in the ocean, and exchanges of heat and moisture with the atmosphere. Here, we investigate the hypothesis that wind-driven sea ice transport into/from the BG region influences the freshwater content of the gyre and its variability. To test this hypothesis, we use the results of a coordinated climate response function experiment with four ice-ocean models, in combination with targeted experiments using a regional setup of the MITgcm, in which we rotate the surface wind forcing vectors (thereby changing the ageostrophic component of these winds). Our results show that, via an effect on the net thermodynamic growth rate, anomalies in sea ice transport into the BG affect liquid freshwater adjustment. Specifically, increased ice import increases freshwater retention in the gyre, whereas ice export decreases freshwater in the gyre. Our results demonstrate that uncertainty in the ageostrophic component of surface winds, and in the dynamic sea ice response to these winds, has important implications for ice thermodynamics and freshwater. This sensitivity may explain some of the observed inter-model spread in simulations of Beaufort Gyre freshwater and its adjustment in response to wind forcing.
资助项目	DTP studentship under UK NERC Grant[NE/L002612/1] ; Bjerknes Centre for Climate Research ; European Union[101003826] ; MIT-GISS cooperative agreement ; Natural Sciences and Engineering Research Council (NSERC) of Canada[RGPIN 04357] ; Natural Sciences and Engineering Research Council (NSERC) of Canada[RGPCC 433898] ; Polar Knowledge Canada[PKC-NST-1617-0003] ; MEOPAR[PDF-9-2018] ; University of Alberta's Earth and Atmospheric Sciences department ; TICTOC[NE/P019064/1] ; UK NERC[NE/V005855/1] ; German Helmholtz Climate Initiative REKLIM ; German Federal Ministry for Education and Research (BMBF)[03F0889A]
WOS关键词	ATMOSPHERIC BOUNDARY-LAYER ; MERIDIONAL OVERTURNING CIRCULATION ; WESTERN ARCTIC-OCEAN ; GEOSTROPHIC CURRENTS ; DRAG COEFFICIENTS ; WIND ; MODEL ; EXCHANGE ; CONVECTION ; ANOMALIES
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000920851000001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/183346]
专题	中国科学院海洋研究所
通讯作者	Cornish, Sam B.
作者单位	1.Univ Oxford, Dept Earth Sci, Oxford, England 2.Univ Bergen, Geophys Inst, Bergen, Norway 3.MIT, Boston, MA USA 4.Bjerknes Ctr Climate Res, Bergen, Norway 5.Norwegian Polar Res Inst, Tromso, Norway 6.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB, Canada 7.Univ Manitoba, Ctr Earth Observat Sci, Winnipeg, MB, Canada 8.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 9.Helmholtz Ctr Polar & Marine Res AWI, Alfred Wegener Inst, Bremerhaven, Germany 10.Univ Exeter, Coll Life & Environm Sci, Exeter, England
推荐引用方式 GB/T 7714	Cornish, Sam B.,Muilwijk, Morven,Scott, Jeffery R.,et al. Impact of sea ice transport on Beaufort Gyre liquid freshwater content[J]. CLIMATE DYNAMICS,2023:17.
APA	Cornish, Sam B..,Muilwijk, Morven.,Scott, Jeffery R..,Marson, Juliana M..,Myers, Paul G..,...&Marshall, John.(2023).Impact of sea ice transport on Beaufort Gyre liquid freshwater content.CLIMATE DYNAMICS,17.
MLA	Cornish, Sam B.,et al."Impact of sea ice transport on Beaufort Gyre liquid freshwater content".CLIMATE DYNAMICS (2023):17.