新疆降水的时空分布特征

Spatial and temporal distribution characteristics of precipitation in Xinjiang

选取新疆9个市2000—2018年的逐月降水量数据,分别运用线性回归法、比值订正法对新疆19年降水的时空分布特征及季节变化趋势进行分析。结果表明,新疆降水量的时空分布存在明显的差异;高值出现在7月(190.33 mm),最小值出现在2月(89.75 mm),季节差异非常明显,降水主要集中在夏季;新疆各地间的年降水量差异极为显著,最大值与最小值分别在和田和吐鲁番。利用线性回归法和比值订正法推算出的最大年降水量均出现在乌鲁木齐。

In this paper,the monthly precipitation data of nine cities in Xinjiang from 2000 to 2018 are selected,and the spatial and temporal distribution characteristics and seasonal variation trend of precipitation in Xinjiang in the past 19 years are analyzed by using unitary linear regression and ratio correction,respectively.The results show that there are obvious regional differences in the spatial and temporal distribution of precipitation in Xinjiang,with the highest value occurring in July(190.33 mm)and the lowest value occurring in February(89.75 mm).The seasonal difference is very obvious,and the precipitation mainly concentrates in the summer.The annual precipitation in Xinjiang varies significantly between different regions,with the maximum and minimum values in Hetian and Turpan,respectively.The maximum annual precipitation calculated by linear regression method and ratio correction method both occurred in Urumqi.