摘要
以分辨率为1m的10m×20m和10m×10m观测网为研究对象,运用自制雨量杯开展自然降雨测试试验,结合克里斯琴森均匀系数、分布均匀系数、降雨偏差系数、降雨极值比系数、单因素方差分析等数学方法对自然降雨的空间均匀性进行了研究,分析了风、降雨量对空间均匀性的影响,并讨论了降雨测量仪器在动态比对试验中仪器的架设间隔问题。结果表明:观测场内自然降雨的空间均匀性良好,且各项均匀性指标具有较好的一致性;风对该观测场内的降雨空间均匀性影响不大,而降雨量的差异对其空间均匀性有一定的影响;在动态比对试验中,降雨测量仪器的架设间隔应小于5m,且部分小型降雨测量仪器(如收集杯)架设间隔取1m可行。
In this paper,the spatial uniformity of natural rainfall is studied by using 10 m×20 mand 10 m×10 mobservation networks with a resolution of 1 m.A rainfall test is carried out mainly by using selfmade rainfall cups.The applied mathematical methods include Christianson’s uniform coefficient,distribution uniformity coefficient,rainfall deviation coefficient,rainfall extreme ratio coefficient,and oneway ANOVA.At the same time,the problem of setting the interval of rainfall measuring instrument in dynamic comparison experiment is discussed.The results show that the spatial uniformity of natural rainfall in the observation field is good,and the uniformity index has good consistency;the wind has little effect on the spatial uniformity of rainfall in the observation field,but the difference of rainfall has some effect on the spatial uniformity;the installation interval of rainfall measuring instruments should be less than 5 min the dynamic comparison experiment,and it is feasible for some small-scale rainfall measuring instruments to set up at a interval of 1 m,such as collecting cups.
作者
宋海润
罗仑
王晓蕾
杨会兵
SONG Hairun;LUO Lun;WANG Xiaolei;YANG Huibing(College of Meteorology and Oceanography,National University of Defense Technology,Nanjing 211101;Unit 93685of PLA,Zhangjiakou 075000)
出处
《气象科技》
2020年第1期23-30,共8页
Meteorological Science and Technology
基金
国家自然科学基金项目(41327003)资助.
关键词
自然降雨
空间均匀性
均匀性评价指标
架设间隔
natural rainfull
spatial uniformity
uniformity evaluation index
erection interval
