Increasing Winter Conductive Heat Transfer in the Arctic Sea-ice-covered Areas: 1979–2014

FAN Xieyu; BI Haibo; WANG Yunhe; FU Min; ZHOU Xuan; XU Xiuli; HUANG Haijun

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Increasing Winter Conductive Heat Transfer in the Arctic Sea-ice-covered Areas: 1979–2014

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Sea ice is a quite sensitive indicator in response to regional and global climate changes. Based on monthly mean PanArctic Ice Ocean Modeling and Assimilation System(PIOMAS) sea ice thickness fields, we computed the conductive heat flux(CHF) in the Arctic Ocean in the four winter months(November–February) for a long period of 36 years(1979–2014). The calculated results for each month manifest the increasing extension of the domain with high CHF values since 1979 till 2014. In 2014, regions of roughly 90% of the central Arctic Ocean have been dominated by the CHF values larger than 18 Wm^(-2)(November–December) and 12 Wm^(-2)(January–February), especially significant in the shelf seas around the Arctic Ocean. Moreover, the population distribution frequency(PDF) patterns of the CHF with time show gradually peak shifting toward increased CHF values. The spatiotemporal patterns in terms of the trends in sea ice thickness and other three geophysical parameters, surface air temperature(SAT), sea ice thickness(SIT), and CHF, are well coupled. This suggests that the thinner sea ice cover preconditions for the more oceanic heat loss into atmosphere(as suggested by increased CHF values), which probably contributes to warmer atmosphere which in turn in the long run will cause thinner ice cover. This represents a positive feedback mechanism of which the overall effects would amplify the Arctic climate changes.

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《中国海洋大学学报：英文版》 |2017年第6期|1061-1071|共11页
作者
FAN Xieyu; BI Haibo; WANG Yunhe; FU Min; ZHOU Xuan; XU Xiuli; HUANG Haijun;
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作者单位

Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation;

College of Resources and Environmental Science;

Fujian Agriculture and Forestry University;

Fuzhou 350002;

P. R. China;

Key Laboratory of Marine Geology and Environment;

Institute of Oceanology;

Chinese Academy of Sciences;

Qingdao 266071;

P. R. China;

Laboratory for Marine Geology;

Qingdao National Laboratory for Marine Science and Technology;

Qingdao 266200;

P. R. China;

National Marine Environmental Forecasting Center;

Beijing 100081;

P. R. China;

Institute of Electronics;

Chinese Academy of Sciences;

Beijing 100190;

P. R. China;

University of Chinese Academy of Sciences;

Beijing 100049;

P. R. China;

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原文格式 PDF
正文语种 chi
中图分类海洋学;
关键词
conductive; heat; flux; sea; ice; Arctic; Ocean;

Increasing Winter Conductive Heat Transfer in the Arctic Sea-ice-covered Areas: 1979–2014

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