Impact of Arctic Oscillation on cloud radiative forcing and September sea ice retreat

作     者：Yanxing Li Liang Chang Guoping Gao Yanxing Li;Liang Chang;Guoping Gao

作者机构：College of Marine SciencesShanghai Ocean UniversityShanghai201306China State Key Laboratory of Satellite Ocean Environment DynamicsSecond Institute of OceanographyMinistry of Natural ResourcesHangzhou310012China College of Marine Ecology and EnvironmentShanghai Ocean UniversityShanghai201306China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2022年第41卷第10期

页      面：131-139页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：The National Natural Science Foundation of China under contract Nos 42174016 and 42076240 the Open Fund of State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,Ministry of Natural Resources under contract No.QNHX2122 the Shanghai Pujiang Program under contract No.19PJ1404300 

主　　题：Arctic Arctic Oscillation cloud radiative forcing sea ice retreat 

摘      要：The Arctic Oscillation(AO)has important effects on the sea ice change in terms of the dynamic and thermodynamic ***,while the dynamic processes of AO have been widely explored,the thermodynamic processes of AO need to be further *** this paper,we use the fifth state-of-the-art reanalysis at European Centre for Medium-Range Weather Forecasts(ERA5)from 1979 to 2020 to investigate the relationship between AO and the surface springtime longwave(LW)cloud radiative forcing(CRF),summertime shortwave(SW)CRF in the Arctic region(65°-90°N).In addition,the contribution of CRF induced by AO to the sea ice change is also *** indicate that the positive(negative)anomalies of springtime LW CRF and summertime SW CRF are generally detected over the Arctic Ocean during the enhanced positive(negative)AO phase in spring and summer,***,while the LW(SW)CRF generally has a positive correlation with AO index(AOI)in spring(summer)over the entire Arctic Ocean,this correlation is statistically significant over 70°-85°N and 120°W-90°E(i.e.,region of interest(ROI))in both ***,the response of CRF to the atmospheric conditions varies in spring and *** also find that the positive springtime(summertime)AOI tends to decrease(increase)the sea ice in September,and this phenomenon is especially prominent over the *** sensitivity study among sea ice extent,CRF and AOI further reveals that decreases(increases)in September sea ice over the ROI are partly attributed to the springtime LW(summertime SW)CRF during the positive *** present study provides a new pattern of AO affecting sea ice change via cloud radiative effects,which might benefit the sea ice forecast improvement.