Arctic sea ice volume export through the Fram Strait from combined satellite and model data:1979–2012

查看全文 作　　者：ZHANG [1,3]Zehua;BI [1,2]Haibo;SUN [4]Ke;HUANG [1,2]Haijun;LIU [1,2]Yanxia;YAN [1,2]Liwen

机构地区：[1]The Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;[2]Laboratory for Marine Geology,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China;[3]University of Chinese Academy of Sciences,Beijing 100049,China;[4]The First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China

出　　处：《Acta Oceanologica Sinica》索引2017年第36卷第1期,共12页

基　　金：The National Natural Science Foundation of China under contract No.41406215;the Foundation of Laboratory for Marine Geology,Qingdao National Laboratory for Marine Science and Technology,Postdoctoral Science Foundation of China under contract No.2014M561971;the Open fund for the Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences under contract No.MGE2013KG07 摘　　要：By combing satellite-derived ice motion and concentration with ice thickness fields from a popular model PIOMAS we obtain the estimates of ice volume flux passing the Fram Strait over the 1979–2012 period. Since current satellite and field observations for sea ice thickness are limited in time and space, the use of PIOMAS is expected to fill the gap by providing temporally continued ice thickness fields. Calculated monthly volume flux exhibits a prominent annual cycle with the peak record in March(roughly 145 km3/month) and the trough in August(10 km^3/month). Annual ice volume flux(1 132 km^3) is primarily attributable to winter(October through May) outflow(approximately 92%). Uncertainty in annual ice volume export is estimated to be 55 km^3(or 5.7%). Our results also verified the extremely large volume flux appearing between late 1980 s and mid-1990 s. Nevertheless, no clear trend was found in our volume flux results. Ice motion is the primary factor in the determination of behavior of volume flux. Ice thickness presented a general decline trend may partly enhance or weaken the volume flux trend. Ice concentration exerted the least influences on modulating trends and variability in volume flux. Moreover, the linkage between winter ice volume flux and three established Arctic atmospheric schemes were examined. Compared to NAO, the DA and EOF3 mechanism explains a larger part of variations of ice volume flux across the strait. 关键词：体积流量北极海冰模型数据海峡卫星出口海冰厚度冰上运动

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Arctic sea ice volume export through the Fram Strait from combined satellite and model data:1979–2012

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