caa a22 4500 605473447 CHVBK 20210128100343.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00382-014-2194-5 doi (NATIONALLICENCE)springer-10.1007/s00382-014-2194-5 The western Pacific subtropical high after the 1970s: westward or eastward shift? [Elektronische Daten] [Yanyan Huang, Huijun Wang, Ke Fan, Yongqi Gao] The interdecadal variation of the western Pacific subtropical high (WPSH) in summer (June-July-August) during 1979-2009 relative to 1948-1978 was investigated based upon NCEP-NCAR reanalysis data. Since the WPSH appeared to be much more stable and stronger in the lower troposphere compared to the middle troposphere and had great influences on the East Asian summer climate with the lower-level southerlies or southwesterlies at its western and southern edge, the interdecadal changes of the WPSH at low levels were examined in this study. Over the area of interest (~15°-30°N, 120°-150°E), the 850-hPa anticyclone circulation was weakened, the sea level pressure decreased, the relative vorticity at middle and lower levels (1,000-600hPa) increased, and the maximum meridional wind at each latitude (between 17.5° and 32.5°N) moved eastward. All the above decadal variations suggested that the WPSH recessed eastward during 1979-2009 relative to 1948-1978, which can be displayed in the 850-hPa eddy geopotential height field. In association with the eastward recession of the WPSH, the water vapor transport from the Indian summer monsoon played a more important role in the summer precipitation over the middle and lower reaches of the Yangtze River valley during 1979-2009 relative to 1948-1978. Springer-Verlag Berlin Heidelberg, 2014 Interdecadal variation nationallicence Western Pacific subtropical high nationallicence East Asian summer monsoon nationallicence Huang Yanyan Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut Wang Huijun Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut Fan Ke Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut Gao Yongqi Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut Climate Dynamics Springer Berlin Heidelberg 44/7-8(2015-04-01), 2035-2047 0930-7575 44:7-8<2035 2015 44 382 https://doi.org/10.1007/s00382-014-2194-5 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/s00382-014-2194-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang Yanyan Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 700 1- Wang Huijun Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 700 1- Fan Ke Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 700 1- Gao Yongqi Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 44/7-8(2015-04-01), 2035-2047 0930-7575 44:7-8<2035 2015 44 382