Journal ArticleDOI
Shift in the summer rainfall over the Yangtze River valley in the late 1970s
TLDR
In this paper, the authors found that the change in the summer rainfall over the Yangtze River valley is associated with the variations of the sea surface temperatures (SSTs) of the eastern tropical Pacific and tropical Indian Ocean.Abstract:
[1] The summer rainfall over the middle-lower valley of the Yangtze River and over the whole eastern China experienced a notable regime shift in about 1979. This change is consistent with a simultaneous jump-like change in the 500 hPa geopotential height (Φ500) over the northern Pacific. The rainfall over the Yangtze River valley is closely related to the Φ500 averaged over the area 20°–25°N, 125°–140°E, with a correlation coefficient of 0.66 for the period 1958–1999. Since 1980, the subtropical northwestern Pacific high (SNPH) has enlarged, intensified, and extended southwestward. The changes in the SNPH are strongly associated with the variations of the sea surface temperatures (SSTs) of the eastern tropical Pacific and tropical Indian Ocean. The anomalies of these SSTs, responsible primarily for the shift of the summer rainfall over the Yangtze River through the changes in SNPH, precede the Φ500 signals with different leading times.read more
Citations
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Journal ArticleDOI
Trends in Total Precipitation and Frequency of Daily Precipitation Extremes over China
TL;DR: Wang et al. as mentioned in this paper assessed trends in annual and seasonal total precipitation and in extreme daily precipitation, defined as those larger than its 95th percentile for the year, summer, and winter half years, have been assessed for the period 1951-2000.
Journal ArticleDOI
Atmospheric water vapor transport associated with typical anomalous summer rainfall patterns in China
Tianjun Zhou,Rucong Yu +1 more
TL;DR: In this article, the authors reveal the atmospheric water vapor transports associated with typical anomalous summer rainfall patterns in China and show that the origins of water vapor supply related to anomalous rainfall patterns are different from those related to the normal monsoon rainfall.
Journal ArticleDOI
Why the Western Pacific Subtropical High Has Extended Westward since the Late 1970s
Tianjun Zhou,Rucong Yu,Jie Zhang,Helge Drange,Christophe Cassou,Clara Deser,Daniel L. R. Hodson,Emilia Sanchez-Gomez,Jian Li,Noel Keenlyside,Xiaoge Xin,Yuko M. Okumura +11 more
TL;DR: In this paper, the authors suggest that the negative heating in the central and eastern tropical Pacific and increased convective heating in equatorial Indian Ocean/ Maritime Continent associated with IWP warming are in favor of the westward extension of WPSH.
Journal ArticleDOI
Observed trends in extreme precipitation events in China during 1961–2001 and the associated changes in large‐scale circulation
Yuqing Wang,Li Zhou +1 more
TL;DR: In this article, the observed trends in extreme precipitation events and those in annual and seasonal mean precipitation in China during 1961-2001 are analyzed, and the results show that the annual mean precipitation increases significantly in southwest, northwest, and east China, and decreases significantly in central, north and northeast China.
Journal ArticleDOI
Steady decline of east Asian monsoon winds, 1969–2000: Evidence from direct ground measurements of wind speed
Ming Xu,Ming Xu,Chih-Pei Chang,Chih-Pei Chang,Congbin Fu,Ye Qi,Alan Robock,David A. Robinson,Huai Min Zhang +8 more
TL;DR: In this article, the authors show that the surface wind speed associated with the east Asian monsoon has significantly weakened in both winter and summer in the recent three decades, and they found that the monsoon wind speed is also highly correlated with incoming solar radiation at the surface.
References
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Journal ArticleDOI
The NCEP/NCAR 40-Year Reanalysis Project
Eugenia Kalnay,Masao Kanamitsu,Robert Kistler,William D. Collins,D.G. Deaven,L. S. Gandin,M. Iredell,Suranjana Saha,Glenn H. White,John S. Woollen,Yuejian Zhu,Muthuvel Chelliah,Wesley Ebisuzaki,Wayne Higgins,John E. Janowiak,Kingtse C. Mo,Chester F. Ropelewski,Julian X. L. Wang,Ants Leetmaa,Richard W. Reynolds,Roy L. Jenne,Dennis Joseph +21 more
TL;DR: The NCEP/NCAR 40-yr reanalysis uses a frozen state-of-the-art global data assimilation system and a database as complete as possible, except that the horizontal resolution is T62 (about 210 km) as discussed by the authors.
Journal ArticleDOI
Decadal atmosphere-ocean variations in the Pacific
TL;DR: A decade-long change in the atmospheric circula- tion throughout the troposphere revealed a deeper and eastward shifted Aleutian low pressure system in the winter half year which advected warmer and moister air along the west coast of North America and into Alaska and colder air over the north Pacific.
Journal ArticleDOI
Analyses of global sea surface temperature 1856–1991
Alexey Kaplan,Mark A. Cane,Yochanan Kushnir,Amy C. Clement,M. Benno Blumenthal,Balaji Rajagopalan +5 more
TL;DR: In this paper, the authors used three statistically based methods: optimal smoothing (OS), the Kalrnan filter (KF), and optimal interpolation (OI), along with estimates of the error covariance of the analyzed fields.
Journal ArticleDOI
Interannual and Interdecadal Variations of the East Asian Summer Monsoon and Tropical Pacific SSTs. Part I: Roles of the Subtropical Ridge
TL;DR: In this paper, the interannual relationship between the East Asian summer monsoon and the tropical Pacific SSTs is studied using rainfall data in the Yangtze River Valley and the NCEP reanalysis for 1951-96.
Journal ArticleDOI
Global patterns of ENSO‐induced precipitation
Aiguo Dai,Tom M. L. Wigley +1 more
TL;DR: In this paper, the authors combine satellite estimates of oceanic precipitation and historical rain-gauge records to derive a global climatology of ENSO-induced precipitation anomalies using empirical orthogonal function (EOF) analyses.
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