1982年夏季印缅槽和澳大利亚冷高压的中期振荡及其与广东降水的关系

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

基金项目: 国家气象局热带气象科学基金资助项目

MEDIUM-RANGE OSCILLATIONS FOR THE INDOCHINA-BURMA TROUGH AND THE AUSTRALIAN COLD HIGH AND THEIR RELATIONSHIP WITH PRECIPITATION IN GUANGDONG IN THE SUMMER OF 1982

摘要: 本文利用1982年7—9月地面气压,850、500hPa高度和温度,广东地区测站的雨量等资料,进行功率谱、交叉谱、凝聚谱以及相关系数的计算。结果表明,这年夏季,印缅槽存在准三周的周期振荡,澳大利亚冷高压存在准两周的周期振荡,两者叠加的结果,与广东地区降水存在的准两周和准一周的振荡周期相吻合。研究还指出,这两个系统的周期变化比广东地区的降水超前1—3天。

Abstract: Using surface pressure,height and temperature data at 850 and 500 hPa.and rainfall records in Guangdong stations for July-September, 1982, power spectrum, cross spectrum, coagulation spectrum and correlation coefficient are derived in this paper.It shows that there is a quasi-3-week oscillation for the Indochina-Burma Trough and quasi-biweekly oscillation for the Australian Cold High and that their superimposed result is consistent with the quasi-biweekly and quasi-weekly oscillations for the precipitation in Guangdong.It is also shown that the periodic variations in the former two systems take place 1-3 days in advance of the ones in Guangdong precipitation.