Link between the Barents Oscillation and Recent Boreal Winter Cooling over the Asian Midlatitudes  

作　　者：Qi SHU Fangli QIAO Zhenya SONG Yajuan SONG 

机构地区：[1]First Institute of Oceanography,State Oceanic Administration [2]Laboratory for Regional Oceanography and Numerical Modeling,Qingdao National Laboratory for Marine Science and Technology [3]Key Laboratory of Marine Science and Numerical Modeling,State Oceanic Administration

出　　处：《Advances in Atmospheric Sciences》2018年第1期127-132,共6页大气科学进展（英文版）

基　　金：supported by the Project of Comprehensive Evaluation of Polar Areas on Global and Regional Climate Changes (Grant No.CHINARE04-04);the National Natural Science Foundation of China (Grant No.41406027);the NSFCShandong Joint Fund for Marine Science Research Centers (Grant No.U1406404)

摘　　要：The link between boreal winter cooling over the midlatitudes of Asia and the Barents Oscillation(BO) since the late 1980s is discussed in this study, based on five datasets. Results indicate that there is a large-scale boreal winter cooling during 1990–2015 over the Asian midlatitudes, and that it is a part of the decadal oscillations of long-term surface air temperature(SAT)anomalies. The SAT anomalies over the Asian midlatitudes are significantly correlated with the BO in boreal winter. When the BO is in its positive phase, anomalously high sea level pressure over the Barents region, with a clockwise wind anomaly,causes cold air from the high latitudes to move over the midlatitudes of Asia, resulting in anomalous cold conditions in that region. Therefore, the recent increasing trend of the BO has contributed to recent winter cooling over the Asian midlatitudes.The link between boreal winter cooling over the midlatitudes of Asia and the Barents Oscillation(BO) since the late 1980s is discussed in this study, based on five datasets. Results indicate that there is a large-scale boreal winter cooling during 1990–2015 over the Asian midlatitudes, and that it is a part of the decadal oscillations of long-term surface air temperature(SAT)anomalies. The SAT anomalies over the Asian midlatitudes are significantly correlated with the BO in boreal winter. When the BO is in its positive phase, anomalously high sea level pressure over the Barents region, with a clockwise wind anomaly,causes cold air from the high latitudes to move over the midlatitudes of Asia, resulting in anomalous cold conditions in that region. Therefore, the recent increasing trend of the BO has contributed to recent winter cooling over the Asian midlatitudes.

关 键 词：climate change Barents Oscillation winter cooling 

分 类 号：P461.2[天文地球—大气科学及气象学]