Impact of sea ice transport on Beaufort Gyre liquid freshwater content
文献类型：期刊论文
| 作者 | Cornish, Sam B.5; Muilwijk, Morven3,6,9; Scott, Jeffery R.7; Marson, Juliana M.8,10; Myers, Paul G.8; Zhang, Wenhao1,2; Wang, Qiang2; Kostov, Yavor4; Johnson, Helen L.5; Marshall, John7 |
| 刊名 | CLIMATE DYNAMICS
 |
| 出版日期 | 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. |
| WOS关键词 | ATMOSPHERIC BOUNDARY-LAYER ; MERIDIONAL OVERTURNING CIRCULATION ; WESTERN ARCTIC-OCEAN ; GEOSTROPHIC CURRENTS ; DRAG COEFFICIENTS ; WIND ; MODEL ; EXCHANGE ; CONVECTION ; ANOMALIES |
| 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研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000920851000001 |
| 出版者 | SPRINGER |
| 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.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 2.Helmholtz Ctr Polar & Marine Res AWI, Alfred Wegener Inst, Bremerhaven, Germany 3.Univ Bergen, Geophys Inst, Bergen, Norway 4.Univ Exeter, Coll Life & Environm Sci, Exeter, England 5.Univ Oxford, Dept Earth Sci, Oxford, England 6.Norwegian Polar Res Inst, Tromso, Norway 7.MIT, Boston, MA USA 8.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB, Canada 9.Bjerknes Ctr Climate Res, Bergen, Norway 10.Univ Manitoba, Ctr Earth Observat Sci, Winnipeg, MB, Canada |
| 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. |
入库方式： OAI收割
来源：海洋研究所
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