鄂尔多斯市夏季降水特征及其与东亚夏季风指数的关系

Characteristics of summer precipitation in ordos city and its relationship with east asian summer monsoon index

文章利用鄂尔多斯市11个国家级地面气象观测站1967-2018年夏季降水资料,分析了鄂尔多斯市夏季降水气候特征以及与东亚夏季风指数的相关性。结果表明1967-2018年鄂尔多斯市夏季平均降水量呈现出明显的经向分布特点,自东向西逐渐递减,夏季降水量在1996-2010年为降水偏少时段,2011年开始转为偏多的趋势,在2017年有一次突变过程,之后降水增多。鄂尔多斯南部夏季降水与东亚夏季风指数的相关较为显著。

The climate characteristics of summer precipitation and the correlation with the east asian summer monsoon index were analyzed by using the precipitation data of 11 national surface meteorological observation stations from1967 to 2018.The results show that the average summer precipitation in Ordos City from 1967 to 2018 shows obvious meridional distribution characteristics, gradually decreasing from east to west, summer precipitation from 1996 to 2010 is less precipitation period, and began to turn to more in 2011, there was a mutation in 2017, followed by increased precipitation. There is a significant correlation between summer precipitation and east asian summer monsoon index in southern Ordos.