caa a22 4500 605473889 CHVBK 20210128100345.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s00382-014-2241-2 doi (NATIONALLICENCE)springer-10.1007/s00382-014-2241-2 Potential influence of the November-December Southern Hemisphere annular mode on the East Asian winter precipitation: a new mechanism [Elektronische Daten] [Zhiwei Wu, Juan Dou, Hai Lin] As the leading mode of the global atmospheric mass inter-annual variability, the Southern Hemisphere annular mode (SAM) may exert potential influences to the Northern Hemisphere (NH) climate, but the related physical mechanism is not yet clear. In this study, it is found that the November-December (ND) SAM exhibits a significant inverse relationship with the winter precipitation over East Asia, particularly southern China. Observational and numerical evidences show that anomalous ND SAM is usually associated with a South Atlantic-Pacific dipole sea surface temperature anomaly (SSTA) which persists into ensuring winter. The dipole SSTA can modulate the variability of the Inter-tropical Convergence Zone (ITCZ) in Pacific. Subsequently, a distinguished atmospheric tele-connection pattern is induced and prevails over the NH mid-latitude region as a response to the anomalous ITCZ. Large areas of high pressure anomalies are triggered at upper troposphere over East Asia and centered over southern China, which favors less precipitation over East Asia, particularly southern China, and vice versa. Through such a physical mechanism, the notable influence of the ND SAM can sustain through the following season and impact on the NH winter climate. Springer-Verlag Berlin Heidelberg, 2014 Southern Hemisphere annular mode nationallicence Northern Hemisphere climate nationallicence Mechanism nationallicence Wu Zhiwei Earth System Modeling Center, Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, 210044, Nanjing, Jiangsu, China aut Dou Juan Earth System Modeling Center, Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, 210044, Nanjing, Jiangsu, China aut Lin Hai Atmospheric Numerical Weather Prediction Research Section, Environment Canada, H9P 1J3, Dorval, QC, Canada aut Climate Dynamics Springer Berlin Heidelberg 44/5-6(2015-03-01), 1215-1226 0930-7575 44:5-6<1215 2015 44 382 https://doi.org/10.1007/s00382-014-2241-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00382-014-2241-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu Zhiwei Earth System Modeling Center, Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, 210044, Nanjing, Jiangsu, China aut NATIONALLICENCE 700 1- Dou Juan Earth System Modeling Center, Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, 210044, Nanjing, Jiangsu, China aut NATIONALLICENCE 700 1- Lin Hai Atmospheric Numerical Weather Prediction Research Section, Environment Canada, H9P 1J3, Dorval, QC, Canada aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 44/5-6(2015-03-01), 1215-1226 0930-7575 44:5-6<1215 2015 44 382