摘要
文章采用1961-2020年遂宁3个国家站日降水量资料,基于RClimDex模型的4种极端降水指数,利用线性回归、R/S分析、M-K突变检验、滑动t检验及小波分析方法研究遂宁1961-2020年极端降水变化特征.文章计算了遂宁极端降水阈值、极端降水频次及极端降水强度,并详细分析了四种极端降水指数的趋势、周期及突变检验,以期对业务人员研究极端降水有所帮助.
Abstract
The article uses daily precipitation data from three national stations in Suining from 1961 to 2020,and four extreme precipitation indices based on the RClimDex model.Linear regression,R/S analysis,M-K mutation test,sliding t-test,and wavelet analysis were used to study the change characteristics of extreme precipitation in Suining from 1961 to 2020.The article calculated the threshold,frequency,and intensity of extreme precipitation in Suining,and analyzed in detail the trends,cycles,and mutation tests of the four extreme precipitation indices.The results obtained are expected to be helpful for business personnel in studying extreme precipitation.
基金项目
四川省遂宁市青年科技人才托举工程项目(遂科协发[2021]6号)
四川省遂宁市气象应用专项课题(2021-应用-01)
维普
万方数据