近65年合肥市降水变化规律分析
发布时间：2019-05-11 14:18
【摘要】：为分析合肥市的降水变化规律,根据合肥市1951~2015年共65年的逐月降水资料,采用线性倾向估计法、累积距平法、Mann-Kendall法和Morlet小波分析法分析了合肥市降水年际变化趋势和周期特征,采用不均匀系数、完全调节系数和集中度等指标分析了合肥市降水的年内分配特征。结果表明,合肥市降水量呈不显著增加趋势,3~5、9、10、12月的降水量呈减少变化,其余各月降水量呈增加变化,仅有6月降水量变化趋势通过了90%置信度检验;15年主周期尺度下的降水丰枯交替明显;降水年内分配较不均匀,主要集中于夏季,年内分配各特征指标呈微弱增加趋势。研究成果可为水资源管理工作提供指导。
[Abstract]:In order to analyze the precipitation variation law of Hefei City, according to the monthly precipitation data of 151 / 2015 in Hefei City, linear tendency estimation method and cumulative anomaly method were used. Mann-Kendall method and Morlet wavelet analysis method are used to analyze the interannual variation trend and periodic characteristics of precipitation in Hefei. The annual distribution characteristics of precipitation in Hefei are analyzed by using the indexes of inhomogeneity coefficient, complete adjustment coefficient and concentration degree. The results showed that the precipitation in Hefei showed no significant increase trend, but the precipitation decreased in 3 鈮，
本文编号：2474562
[Abstract]:In order to analyze the precipitation variation law of Hefei City, according to the monthly precipitation data of 151 / 2015 in Hefei City, linear tendency estimation method and cumulative anomaly method were used. Mann-Kendall method and Morlet wavelet analysis method are used to analyze the interannual variation trend and periodic characteristics of precipitation in Hefei. The annual distribution characteristics of precipitation in Hefei are analyzed by using the indexes of inhomogeneity coefficient, complete adjustment coefficient and concentration degree. The results showed that the precipitation in Hefei showed no significant increase trend, but the precipitation decreased in 3 鈮，
本文编号：2474562
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