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Seasonal and Interannual Variability of Bering Strait Throughflow from AO-FVCOM and Observation
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  • 英文篇名:Seasonal and Interannual Variability of Bering Strait Throughflow from AO-FVCOM and Observation
  • 作者:DENG ; Yongfei ; GAO ; Guoping ; ZHANG ; Yu ; CHEN ; Changsheng
  • 英文作者:DENG Yongfei;GAO Guoping;ZHANG Yu;CHEN Changsheng;College of Marine Sciences, Shanghai Ocean University;College of Ocean Science and Engineering, Shanghai Maritime University;
  • 英文关键词:AO-FVCOM;;Bering Strait throughflow;;seasonal and interannual variability;;in-situ observation;;local wind;;sea level difference
  • 中文刊名:QDHB
  • 英文刊名:中国海洋大学学报(英文版)
  • 机构:College of Marine Sciences, Shanghai Ocean University;College of Ocean Science and Engineering, Shanghai Maritime University;
  • 出版日期:2019-06-06
  • 出版单位:Journal of Ocean University of China
  • 年:2019
  • 期:v.18
  • 基金:supported by the National Program on Key Basic Research Project of China (No. 2015CB95 3902);; the National Natural Science Foundation of China (Nos. 41276197 and 41706210);; the National Key Research and Development Program of China (No. 2016 YFC1400903);; support of various institutions with programs and grants to deploy mooring and achieve data
  • 语种:英文;
  • 页:QDHB201903010
  • 页数:11
  • CN:03
  • ISSN:37-1415/P
  • 分类号:83-93
摘要
A high-resolution Arctic Ocean-Finite Volume Community Ocean Model(AO-FVCOM) and observational current data from 14 mooring stations in Bering Strait and surrounding regions between 1990 and 2015 were used to study the seasonal and interannual variability of Bering Strait throughflow(BST). AO-FVCOM represented the BST with a climatological northward flux of 1.06 Sv, which was close to the observational mean of 0.94 ? 0.26 Sv. From the model results, the strongest volume flux was in summer, approximately 45% larger than that in winter. Interannual variability of BST was also indicated in the model results, and the maximum and minimum annual mean transports are in 2007 and 2012, respectively. AO-FVCOM showed larger differences from the observations in 2000, 2002, and 2015 than in other years, which may be related to the limitation of atmospheric forcing for the model. According to the driving mechanisms of BST, sea level difference(SLD) across the strait dominates the northward volume transport, and local wind is also important in forcing the seasonal variability of the BST and SLD patterns to change the BST indirectly.
        A high-resolution Arctic Ocean-Finite Volume Community Ocean Model(AO-FVCOM) and observational current data from 14 mooring stations in Bering Strait and surrounding regions between 1990 and 2015 were used to study the seasonal and interannual variability of Bering Strait throughflow(BST). AO-FVCOM represented the BST with a climatological northward flux of 1.06 Sv, which was close to the observational mean of 0.94 ? 0.26 Sv. From the model results, the strongest volume flux was in summer, approximately 45% larger than that in winter. Interannual variability of BST was also indicated in the model results, and the maximum and minimum annual mean transports are in 2007 and 2012, respectively. AO-FVCOM showed larger differences from the observations in 2000, 2002, and 2015 than in other years, which may be related to the limitation of atmospheric forcing for the model. According to the driving mechanisms of BST, sea level difference(SLD) across the strait dominates the northward volume transport, and local wind is also important in forcing the seasonal variability of the BST and SLD patterns to change the BST indirectly.
引文
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