热带气象学报2011，Vol.27Issue(6)：869-876,8.DOI:10.3969/j.issn.1004-4965.2011.06.010
2007年南海夏季风季节内振荡的北传及影响因子
THE NORTHWARD PROPAGATION AND MECHANISMS OF THE INTRASEASONAL OSCILLATION OF SOUTH CHINA SEA SUMMER MONSOON IN 2007
摘要
Abstract
The Global Precipitation Climatology Project (GPCP) Satellite-Derived (IR) GPI Daily Rainfall and frequency-wavenumber method are used to analyze the propagating features of the intraseasonal oscillation (ISO) associated with South China Sea summer monsoon (SCSSM) in 2007. Then, the NCEP (National Centers for Environmental Prediction)/NCAR(National Center for Atmospheric Research) daily reanalysis are employed to explore what drives the ISO propagate northwards. The results indicate that the ISO of SCSSM tends to move northwards greatly and the northward propagation is much larger than the southward one. Climatological mean zonal wind vertical shear and anomalous water vapor, transported by the mean meridional flow, play important roles in the northward propagation of ISO of SCSSM. However, because of differences in mean zonal flow and water vapor between the SCSSM and Indian summer monsoon region, mean water vapor transported by anomalous meridional wind and air-sea interaction plays a negligible role in the northward propagation of ISO over the SCSSM region, though with considerable contribution to the Indian summer monsoon region.关键词
气候学/季节内振荡/频率波波数分析/南海夏季风/传播Key words
climatology/ intraseasonal oscillation/ frequency-wavenumber analysis/ South China Sea summer monsoon/ propagation分类
天文与地球科学引用本文复制引用
郑彬,林爱兰,李春晖,谷德军..2007年南海夏季风季节内振荡的北传及影响因子[J].热带气象学报,2011,27(6):869-876,8.基金项目
国家重点基础研究发展计划(973)项目(2011 CB403403)课题 （973）
国家自然科学基金(40675055)共同资助 （40675055）
