The role of Arctic sea ice loss in the interdecadal trends of the East Asian summer monsoon in a warming climate

被引：3

作者：

Zhang, Xiaoqi ^{[1
,2
]}

He, Bian ^{[2
]}

Bao, Qing ^{[2
]}

Liu, Yimin ^{[2
,3
]}

Wu, Guoxiong ^{[2
,3
]}

Duan, Anmin ^{[4
]}

Hu, Wenting ^{[2
]}

Sheng, Chen ^{[2
]}

Rao, Jian ^{[1
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteorol, Joint Int Res Lab Climate & Environm Change ILCEC, Key Lab Meteorol Disaster,Minist Educ KLME, Nanjing 210044, Peoples R China

[2] Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geoph, Beijing 100029, Peoples R China

[3] Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China

[4] Xiamen Univ, Coll Ocean & Earth Sci, State Key Lab Marine Environm Sci, Xiamen 361005, Peoples R China

来源：

NPJ CLIMATE AND ATMOSPHERIC SCIENCE | 2024年 / 7卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ROSSBY-WAVE PROPAGATION; ATMOSPHERIC RESPONSE; POLAR AMPLIFICATION; LARGE ENSEMBLE; COLD WINTERS; PRECIPITATION; PACIFIC; PATTERNS; RAINFALL; IMPACT;

D O I：

10.1038/s41612-024-00717-y

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The East Asian summer monsoon precipitation has exhibited a well-known "southern China flood and northern China drought" pattern in recent decades. The increase in aerosols and warming oceans are recognized as two important forcings that control of the precipitation trends over East Asian land. However, in this study, by using large ensemble simulations from the CMIP6 Polar Amplification Model Intercomparison Project (PAMIP), the influence of Arctic amplification, serving as the prominent feature of global warming, is very important in modulating the East Asian summer precipitation pattern, which is comparable to the influence of sea surface temperature (SST). Additionally, the observed "southern China flood and northern China drought" pattern only exists in July and August, whereas a triple pattern with the precipitation positive anomaly center over Middle China occurs in June. These patterns are closely connected with the regional differences in Arctic sea ice loss from June to July, affected through both the Rossby waves propagating in a weaker westerly jet and the decrease in the large-scale meridional thermal contrast in a warming climate.

引用

页数：14

共 84 条

[1] Dynamic and thermodynamic factors controlling increasing summer monsoon rainfall over the West African Sahel [J].