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| 南海夏季风与印度夏季风爆发早晚的年际差异 | |
| 引用本文： | 茅懋,郭品文,郭准.南海夏季风与印度夏季风爆发早晚的年际差异[J].南京气象学院学报,2009,32(1). |
| 作者姓名： | 茅懋 郭品文 郭准 |
| 作者单位： | 1. 南京信息工程大学,大气科学学院,江苏,南京,210044;上海中心气象台,上海,200030 2. 南京信息工程大学,大气科学学院,江苏,南京,210044;南京信息工程大学,气象灾害省部共建教育部重点实验室,江苏,南京,210044 3. 南京信息工程大学,大气科学学院,江苏,南京,210044 |
| 基金项目： | 江苏省气象灾害重点实验室开放课题 |
| 摘 要： | 利用NCEP/NCAR逐日再分析资料分析了南海夏季风与印度夏季风的爆发时间,根据爆发时间差值区分了差异大小年,结果表明二者的爆发具有明显的年际异常.差异偏小年,南海夏季风爆发时,印度半岛已经盛行偏西风,两者几乎同时建立;而差异偏大年,南海夏季风爆发后7候左右印度才盛行偏西风,印度夏季风爆发得晚,环流形势有明显差异;进一步分析机制表明,印度夏季风的建立主要由经向温度反转所决定,而南海夏季风的建立取决于纬向温度反转,二者的爆发具有相对独立性,且纬向温度反转的早晚更大程度上影响了差异的大小,积温线密集带出现的早晚决定了温度反转的早晚. |
| 关 键 词： | 南海夏季风 印度夏季风 爆发 年际差异 独立性 |
Interannual Variation of Differences in Onset Dates between South China Sea and Indian Summer Monsoons |
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| MAO Mao,GUO Pin-wen,GUO Zhun.Interannual Variation of Differences in Onset Dates between South China Sea and Indian Summer Monsoons[J].Journal of Nanjing Institute of Meteorology,2009,32(1). | |
| Authors: | MAO Mao GUO Pin-wen GUO Zhun |
| Institution: | 1.School of Atmospheric Sciences;NUIST;Nanjing 210044;China;2.Shanghai Meteorological Center;Shanghai 200030;3.Key Laboratory of Meteorological Disaster of Ministry of Education;China |
| Abstract: | Based on the NCEP/NCAR daily reanalysis data,the onset dates of the South China Sea summer monsoon(SCSSM) and Indian summer monsoon(ISM) are investigated,in such a way that the great and small difference years are defined by using the difference of the two onset dates.Results show that the difference has obvious interannual variations.In the small difference years,when the SCSSM bursts,the westerly has prevailed over Indian Peninsula,and therefore the two summer monsoons burst almost synchroneously.However ... |
| Keywords: | South China Sea summer monsoon Indian summer monsoon monsoon onset date interannual variation meridional temperature gradient zonal temperature gradient |
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