caa a22 4500 605471037 CHVBK 20210128100331.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s00382-014-2275-5 doi (NATIONALLICENCE)springer-10.1007/s00382-014-2275-5 Tropical SST forcing on the anomalous WNP subtropical high during July-August 2010 and the record-high SST in the tropical Atlantic [Elektronische Daten] [Chi-Cherng Hong, Ming-Ying Lee, Huang-Hsiung Hsu, Nai-Hsin Lin, Ben-Jei Tsuang] In summer of 2010, the western North Pacific subtropical high (WNPSH) was extremely strong and exhibited unusual westward extension, which resulted in record-breaking warmth in Japan and considerably below-normal and westward-shifted tropical cyclone activity in the western North Pacific (WNP). Although a moderate La Niña occurred, the sea surface temperature (SST) in the northern Indian Ocean (NIO) and tropical Atlantic (TA) was considerably high. In this study, we argued that the La Niña cold SST alone was not sufficient to maintain the strong WNPSH of 2010, and that the unusually warm SSTs in the NIO and TA markedly contributed to the enhancement and westward shift of the WNPSH in the boreal summer of that year. We focused on the effects of sea surface temperature anomalies in the tropical Atlantic (TA-SSTAs), which have been seldom explored and are poorly understood compared with the effects of SSTAs in the tropical Pacific and NIO. The warm TA-SST forced a westward-extending overturning circulation, with a sinking branch over the central Pacific Ocean, which produced a remote response similar to the La Niña condition and enhanced the WNPSH. The warm TA-SST also induced the cyclonic anomaly in the tropical eastern North Pacific, a distinct phenomenon not observed in a canonical La Niña event. Furthermore, we demonstrated that the anomalous near-surface circulation associated with the negative North Atlantic Oscillation might play a more dominant role than that of the 2009 El Niño in inducing the record-high SST in the TA in 2010. Springer-Verlag Berlin Heidelberg, 2014 Western North Pacific subtropical high nationallicence Sea surface temperature anomalies nationallicence Tropical Atlantic nationallicence North Atlantic Oscillation nationallicence El Niño nationallicence Hong Chi-Cherng Department of Earth and Life, University of Taipei, Taipei, Taiwan aut Lee Ming-Ying Central Weather Bureau, Taipei, Taiwan aut Hsu Huang-Hsiung Research Center for Environmental Changes, Academia Sinica, 128 Academia Road, Section2 Nankang, 115, Taipei, Taiwan aut Lin Nai-Hsin Research Center for Environmental Changes, Academia Sinica, 128 Academia Road, Section2 Nankang, 115, Taipei, Taiwan aut Tsuang Ben-Jei Department of Environmental Engineering, National Chung Hsing University, Taichung, Taiwan aut Climate Dynamics Springer Berlin Heidelberg 45/3-4(2015-08-01), 633-650 0930-7575 45:3-4<633 2015 45 382 https://doi.org/10.1007/s00382-014-2275-5 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/s00382-014-2275-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hong Chi-Cherng Department of Earth and Life, University of Taipei, Taipei, Taiwan aut NATIONALLICENCE 700 1- Lee Ming-Ying Central Weather Bureau, Taipei, Taiwan aut NATIONALLICENCE 700 1- Hsu Huang-Hsiung Research Center for Environmental Changes, Academia Sinica, 128 Academia Road, Section2 Nankang, 115, Taipei, Taiwan aut NATIONALLICENCE 700 1- Lin Nai-Hsin Research Center for Environmental Changes, Academia Sinica, 128 Academia Road, Section2 Nankang, 115, Taipei, Taiwan aut NATIONALLICENCE 700 1- Tsuang Ben-Jei Department of Environmental Engineering, National Chung Hsing University, Taichung, Taiwan aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 45/3-4(2015-08-01), 633-650 0930-7575 45:3-4<633 2015 45 382