摘要
首先从理论上研究了要素场相关函数和校准雨量站的分布对最优插值中最优权重系数的影响 ,然后用 3种相关函数模型对 1996～ 1997年收集的 113个时次的雷达和雨量计资料进行计算、检验。结果表明 :采用自适应相关函数模型的最优校准法可以有效提高区域降水量的测量精度。另外 ,通过对大误差的产生原因分析 ,给出合理设置自动雨量站的建议和解决边界测量精度较低的方法。
We firstly studied influence of power coefficients in optimum interpolation by correlation function of element field and distribution of gauge Then three correlation function models were used to calculate 113-hour data of radar and gauge The result show: the adaptive correlation functions model can far more develop precision of measuring regional precipitation With analysis of the cause of large errors, we finally gave suggestion of setting automatic gauges and method of solving lower precision on boundary
出处
《大气科学》
CSCD
北大核心
2000年第2期263-270,共8页
Chinese Journal of Atmospheric Sciences
关键词
最优插值
区域降水量
精度
自动雨量站
降水量
optimum interpolation method
amount of regional precipitation
precision automatic gauge
