摘要
以气象站点监测资料与开源气候环境栅格数据,研究了1951~2017年盘山县降水量时空分布特征。结果表明,近67年间该县降水量呈现弱的减少趋势,倾向斜率-1.1914mm/a,但并不明显,其时间序列主周期为5a,次周期为9,3,22a时;其空间分布模型符合高斯模型,具有强烈空间自相关,降水量呈现自东南沿海向西北内陆减少的格局。
The spatial and temporal distribution of precipitation in panshan county from 1951~2017 was studied by using meteorological monitoring data and open source climatic environment grid data.The results show that in the past 67 years,the precipitation in the county has shown a weak reduction trend,and the tendency slope is-1.1914 mm/a,but it is not obvious.The main cycle of the time series is 5a,and the second cycle is 9,3,22a.The spatial distribution model is consistent with the Gaussian model,with strong spatial autocorrelation,and precipitation decreases from the southeast coast to the northwest inland.
作者
翟卫军
ZHAI Weijun(Hebei Chengde Hydrological Resources Survey Bureau,Chengde 067000,China)
出处
《水科学与工程技术》
2020年第2期16-18,共3页
Water Sciences and Engineering Technology
关键词
空间分布
时间变化
降水量
spatial distribution
time change
precipitation
