广西南宁国家基本气象站迁站对比观测资料差异分析

Comparative Analysis on Observation Data of the Transfer Station in Nanning National Basic Weather Station

[目的]分析广西南宁国家基本气象站迁站对比观测资料差异。[方法]采用南宁国家基本气象观测站(59431)新旧站址2000年1～12月同期气压、气温、相对湿度、风向风速、降水量、日照等观测资料,对比分析南宁新旧站各气象要素的差异;并从海拔高度、下垫面性质、测站环境等方面分析了新旧站址各气象要素差异的主要原因。[结果]新站址本站气压、气温均低于旧址,相对湿度、风速均高于旧址;降水量、日照差异大,变化无规律。气象要素出现明显差异的主要原因是新旧站址海拔高度、观测环境、站址地形及测站下垫面性质不同等原因造成,且海拔高度及观测环境的不同引起气象要素的差异尤为显著。[结论]该研究为南宁国家基本观测气象站的资料序列延续和均一性订正提供依据。

[Objective] The research aimed to analyze difference of the observation data by transfer station in Nanning national basic weather station.[Method] By using observation data（atmospheric pressure,temperature,relative humidity,wind direction and speed,precipitation,sunshine,etc.） from January to December in 2000 at the old and new Nanning national basic weather station,difference of each meteorological factor was contrasted.Main reason for difference of each meteorological factor was analyzed from altitude,underlaying surface property and station environment.[Result]Atmospheric pressure and temperature at new station were both lower than that at old station,and relative humidity and wind speed were both higher than that at old station.Rainfall and sunshine had big difference at new and old stations,but variation did not have rule.Main reasons for obvious difference of the meteorological factor were that altitude,observation environment,terrain and underlaying surface property at new and old stations were different.Influences of the altitude and observation environment were especially significant.[Conclusion] The research provided basis for continuity and homogeneity correction of the data sequence at Nanning national basic weather station.