首页|Mechanism and effects of the increase in winter temperatures in the Arctic region on cold winters in Heilongjiang Province,Northeast China for the period 1961-2018

Mechanism and effects of the increase in winter temperatures in the Arctic region on cold winters in Heilongjiang Province,Northeast China for the period 1961-2018

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With the advent of climate change,winter temperatures have been steadily in-creasing in the middle-to-high latitudes of the world.However,we have not found a corre-sponding decrease in the number of extremely cold winters.This paper,based on Climatic Research Unit (CRU) re-analysis data,and methods of trend analysis,mutation analysis,correlation analysis,reports on the effects of Arctic warming on winter temperatures in Hei-longjiang Province,Northeast China.The results show that:(1) during the period 1961-2018,winter temperatures in the Arctic increased considerably,that is,3.5 times those of the Equator,which has led to an increasing temperature gradient between the Arctic and the Equator.An abrupt change in winter temperatures in the Arctic was observed in 2000.(2) Due to the global warming,an extremely significant warming occurred in Heilongjiang in winter,in particular,after the Arctic mutation in 2000,although there were two warm winters,more cold winters were observed and the interannual variability of winter temperature also increased.(3)Affected by the warming trend in the Arctic,the Siberian High has intensified,and both the Arctic Vortex and the Eurasian Zonal Circulation Index has weakened.This explains the de-crease in winter temperatures in Heilongjiang,and why cold winters still dominate.Moreover,the increase in temperature difference between the Arctic and the Equator is another reason for the decrease in winter temperatures in Heilongjiang.

temperature of Arctic region in wintercold wintereffectmechanismHeilongjiang Province

WANG Xiaodi、LI Yongsheng、ZHANG Lijuan、SONG Shuaifeng、PAN Tao、REN Chong、TAN Yulong

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School of Geography and Tourism,Harbin University,Heilongjiang Province Key Laboratory of Cold Region Wetland Ecology and Environment Research,Harbin 150086,China

Climate Center of Heilongjiang Province,Harbin 150030,China

Key Opening Laboratory for Northeast China Cold Vortex Research,Shenyang 110166,China

Heilongjiang Province Key Laboratory of Geographical Environment Monitoring and Spatial Information Service in Cold Regions,Harbin Normal University,Harbin 150025,China

The State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China

Hulin Meteorological Bureau of Heilongjiang Province,Hulin 158499,Heilongjiang,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Project of Natural Science Foundation of Heilongjiang Province

41771067U20A2082ZD2020D002

2022

10.1007/s11442-022-1944-2

地理学报(英文版)
中国地理学会,中国科学院地理科学与资源研究所

地理学报(英文版)

CSTPCDCSCDSCI
影响因子：1.307
ISSN：1009-637X
年,卷(期)：2022.32(2)
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