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BI Haibo,WANG Yunhe,ZHANG Wenfeng,ZHANG Zehua,LIANG Yu,ZHANG Yi,HU Wenmin,FU Min,HUANG Haijun. 2018. Recent satellite-derived sea ice volume flux through the Fram Strait:2011-2015. Acta Oceanologica Sinica, 37(9):107-115
Recent satellite-derived sea ice volume flux through the Fram Strait:2011-2015
近年来基于卫星遥感的弗拉姆海峡海冰体积输出变化:2011-2015
Received:October 23, 2018  
DOI:10.1007/s13131-018-1270-9
Key words:sea ice volume flux  Fram Strait  CryoSat-2
中文关键词:  海冰体积通量  弗拉姆海峡  IFREMER  NSIDC  Cryosat-2
基金项目:The National Natural Science Foundation of China under contract No. 41406215; the Foundation of Laboratory for Marine Geology, Institute of Oceanology, Chinese Academy of Sciences; the Foundation of Qingdao National Laboratory for Marine Science and Technology; the 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; the NSFC-Shandong Joint Fund for Marine Science Research Centers under contract No. U1606401.
Author NameAffiliationE-mail
BI Haibo Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266200, China
Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
University of Chinese Academy of Sciences, Beijing 100049, China 
 
WANG Yunhe Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266200, China
Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
University of Chinese Academy of Sciences, Beijing 100049, China 
yhw1118@yeah.net 
ZHANG Wenfeng Shidao Meteorological Observatory of Shandong Province, Weihai 264309, China  
ZHANG Zehua Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266200, China
Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
University of Chinese Academy of Sciences, Beijing 100049, China 
 
LIANG Yu Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266200, China
Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
University of Chinese Academy of Sciences, Beijing 100049, China 
 
ZHANG Yi Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266200, China
Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
University of Chinese Academy of Sciences, Beijing 100049, China 
 
HU Wenmin Wenchang Campus of China University of Mining and Technology, Xuzhou 221008, China  
FU Min National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China  
HUANG Haijun Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266200, China
Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
University of Chinese Academy of Sciences, Beijing 100049, China 
hjhuang@qdio.ac.cn 
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Abstract:
      The Fram Strait (FS) is the primary region of sea ice export from the Arctic Ocean and thus plays an important role in regulating the amount of sea ice and fresh water entering the North Atlantic seas. A 5 a (2011-2015) sea ice thickness record retrieved from CryoSat-2 observations is used to derive a sea ice volume flux via the FS. Over this period, a mean winter accumulative volume flux (WAVF) based on sea ice drift data derived from passive-microwave measurements, which are provided by the National Snow and Ice Data Center (NSIDC) and the Institut Francais de Recherche pour d'Exploitation de la Mer (IFREMER), amounts to 1 029 km3 (NSIDC) and 1 463 km3 (IFREMER), respectively. For this period, a mean monthly volume flux (area flux) difference between the estimates derived from the NSIDC and IFREMER drift data is -62 km3 per month (-18×106 km2 per month). Analysis reveals that this negative bias is mainly attributable to faster IFREMER drift speeds in comparison with slower NSIDC drift data. NSIDC-based sea ice volume flux estimates are compared with the results from the University of Bremen (UB), and the two products agree relatively well with a mean monthly bias of (5.7±45.9) km3 per month for the period from January 2011 to August 2013. IFREMER-based volume flux is also in good agreement with previous results of the 1990s. Compared with P1 (1990/1991-1993/1994) and P2 (2003/2004-2007/2008), the WAVF estimates indicate a decline of more than 600 km3 in P3 (2011/2012-2014/2015). Over the three periods, the variability and the decline in the sea ice volume flux are mainly attributable to sea ice motion changes, and second to sea ice thickness changes, and the least to sea ice concentration variations.
中文摘要:
      弗拉姆海峡是北冰洋海冰出口的主要区域,在调节海冰和淡水进入北大西洋的数量方面发挥着重要作用。从近五年(2011-2015年) Cryosat-2观测数据反演得到海冰厚度被用来通过研究通过该海峡的海冰体积通量。在此期间,基于国家冰雪数据中心(NSIDC)和法国海洋开发研究所(IFREMER)提供的海冰漂移速度数据,得出的平均冬季输出体积通量(WAVF)分别为1029 km3 (NSIDC)和1463 km3 (IFREMER)。同时,从NSIDC和IFREMER漂移数据得到的估计值的月平均体积通量(面积通量)差值为-62 km3/月(-18×106 km2/月)。分析表明,这种负偏差主要归因于IFREMER漂移速度比NSIDC漂移数据快。我们也将基于NSDC的流量估算与不来梅大学基于潜标观测数据的结果进行了比较。这两个产品在2011年1月至2013年8月期间的平均偏差为5.7±45.9 km3/月。此外可以发现,本研究中基于IFREMER的体积通量也与上世纪90年代前人研究结果具有较好的吻合。与P1(1990/91-1993/94)和P2(2003/04-2007/08)相比,WAVF估算结果在P3(2011/12-2014/15)减少量不低于600 km3。这三个时期海冰体积通量的变化和下降主要是由于海冰运动的变化引起的,其次是海冰厚度的变化,最小的是海冰浓度的变化。
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