DOI: 10.1007/s00382-011-1118-x
Scopus记录号: 2-s2.0-84865604656
论文题名: Influence of sea surface temperature on the intraseasonal variability of the South China Sea summer monsoon
作者: Roxy M. ; Tanimoto Y.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 5 起始页码: 1209
结束页码: 1218
语种: 英语
英文关键词: Asian monsoon
; Intraseasonal variablity
; Ocean atmosphere interaction
; South China Sea
英文摘要: The objective of this study is to examine, based on recently available high resolution satellite and observational data, the evolution and role of sea surface temperature (SST) in influencing the intraseasonal variability of the South China Sea (SCS) summer monsoon (SM). The study focuses on the 30-60 day timescale when the northward propagating anomalies are dominant over the SCS. Composite analysis of the SST maximum events during SCS SM shows that increased SST anomalies over the SCS are significantly influenced by the downward shortwave radiation flux anomalies, with the suppressed surface latent heat flux anomalies supplementing to it. A thermal damping of the positive SST anomalies induces positive upward heat fluxes, which then destabilize the lower atmosphere between 1,000 and 700 hPa. The positive SST anomalies lead the positive precipitation anomalies over the SCS by 10 days, with a significant correlation (r = 0. 44) between the SST-precipitation anomalies. The new findings here indicate an ocean-to-atmosphere effect over the SCS, where underlying SST anomalies tend to form a favorable condition for convective activity and sustain enhanced precipitation during the SCS SM. It is also argued, based on our observations, that the negative sea level pressure anomalies induced by the positive SST anomalies play a role in enhancing the northward propagation of the intraseasonal anomalies over the SCS. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55185
Appears in Collections: 过去全球变化的重建
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作者单位: Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Pune 411008, India; Faculty of Environmental Earth Science and Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido, Japan; Research Institute for Global Change, JAMSTEC, Yokohama, Kanagawa, Japan
Recommended Citation:
Roxy M.,Tanimoto Y.. Influence of sea surface temperature on the intraseasonal variability of the South China Sea summer monsoon[J]. Climate Dynamics,2012-01-01,39(5)