| Arctic sea ice volume export through the Fram Strait from combined satellite and model data: 1979–2012 |
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| 引用本文： | 张泽华,毕海波,孙科,黄海军,刘艳霞,严立文.Arctic sea ice volume export through the Fram Strait from combined satellite and model data: 1979–2012[J].海洋学报(英文版),2017,36(1):44-55. |
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| 作者姓名： | 张泽华 毕海波 孙科 黄海军 刘艳霞 严立文 |
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| 作者单位： | 中科院海洋所海洋地质与环境实验室, 青岛 266071;中国科学院大学, 北京 100049,中科院海洋所海洋地质与环境实验室, 青岛 266071;青岛国家海洋科学重点实验室-海洋地质过程与环境功能实验室, 青岛 266237,国家海洋局第一海洋研究所, 青岛 266061,中科院海洋所海洋地质与环境实验室, 青岛 266071;青岛国家海洋科学重点实验室-海洋地质过程与环境功能实验室, 青岛 266237,中科院海洋所海洋地质与环境实验室, 青岛 266071;青岛国家海洋科学重点实验室-海洋地质过程与环境功能实验室, 青岛 266237,中科院海洋所海洋地质与环境实验室, 青岛 266071;青岛国家海洋科学重点实验室-海洋地质过程与环境功能实验室, 青岛 266237 |
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| 基金项目： | 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. |
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| 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.
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| 关 键 词： | 海冰体积通量 遥感 PIOMAS模型 弗拉姆海峡 |
| 收稿时间： | 2015/11/19 0:00:00 |
| 修稿时间： | 2016/4/18 0:00:00 |
Arctic sea ice volume export through the Fram Strait from combined satellite and model data: 1979-2012 |
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| ZHANG Zehu,BI Haibo,SUN Ke,HUANG Haijun,LIU Yanxia and YAN Liwen.Arctic sea ice volume export through the Fram Strait from combined satellite and model data: 1979-2012[J].Acta Oceanologica Sinica,2017,36(1):44-55. |
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| Authors: | ZHANG Zehu BI Haibo SUN Ke HUANG Haijun LIU Yanxia and YAN Liwen |
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| Affiliation: | The Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;University of Chinese Academy of Sciences, Beijing 100049, China,The Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China,The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China,The Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China,The Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China and The Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China |
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| Abstract: | 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 km3/month). Annual ice volume flux (1 132 km3) is primarily attributable to winter (October through May) outflow (approximately 92%). Uncertainty in annual ice volume export is estimated to be 55 km3 (or 5.7%). Our results also verified the extremely large volume flux appearing between late 1980s and mid-1990s. 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. |
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| Keywords: | sea ice volume flux remote sensing PIOMAS Fram Strait |
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