兰州站气候资料序列均一性的初步分析

气候资料的均一性是研究气候变化的前提条件。以兰州站为例，应用SNHT方法对该站的气候资料序列进行均一性检验，首先对降水、平均气温、最高气温、最低气温、平均风速和日照时数几个气象要素进行非均一性检验，然后根据历史台站沿革等元数据信息进行原因分析。结果表明，兰州站平均风速资料与其邻站相关系数低，未通过显著性检验。降水、气温、最高气温、最低气温、日照与邻站的相关系数都达到99％的显著水平，且都存在不均一性，其原因主要有台站的迁移、仪器的更换、统计方法的变化以及城市热岛效应等，完整详细的元数据信息是均一性研究的重要基础。

The Homogeneity Analysis on Climate Series of Lanzhou Meteorological Station

Homogeneity of the climate data is precondition on studying climate change.This paper used SNTH technique to test the homogeneity of climate series of Lanzhou meteorlogical station,and the inhomogeneity test on meteorological factors such as precipitation,average temperature,maximum temperature,minimum temperature,average wind speed and sunshine hours was conducted;meanwhile,the reason was analyzed based on the station history files and metadata information.The results show that inhomogeneity existed in tim...