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近40年浙江省梅雨的年际与年代际演变规律
The Interannual and Interdecadal Oscillation of Precipitation of Meiyu in Zhejang in Recent 40yrs
【摘要】 应用东亚季风指数与浙江省各个站点的梅雨降水进行相关分析 ,选出浙江省梅雨代表站 ,然后将各个梅雨代表站的梅雨降水总和得到一个时间序列 ,对该序列进行趋势分析和小波分析 .结果表明 ,90年代是气候多雨期和洪涝多发年代 .浙江省梅雨降水具有明显的年际变化 ,而年代际变化则表现得比较稳定 .因梅雨持续天数的周期振荡具有较强的规律性 ,这给浙江省梅雨总量的预报提供了一种较好的思路
【Abstract】 Based on the correlation coefficients between East Asian index of summer monsoon and precipitation of meiyu in chosen stations in Zhejiang,some representative stations of meiyu were selected.The precipitation in selected stations was summed up and then a series of precipitation was got,which would be analyzed using the method of wavelet and trend analysis.The results showed 90s is a rainy period when floods are commonplace and,the precipitation of meiyu in Zhejiang presents prominent interannual variation contrary to interdecadal variation,which appears to be more stable in recent 40yrs.The oscillation of the durable days of meiyu varies regularly which should introduce a new clue to predict the precipitation of meiyu in Zhejiang.
【Key words】 monsoon index; the representative station of meiyu; wavelet analysis; the interannual and interdecadal variation;
- 【文献出处】 科技通报 ,Bulletin of Science and Technology , 编辑部邮箱 ,2001年06期
- 【分类号】P468.024
- 【被引频次】23
- 【下载频次】173