新疆托克逊观测气温的均一性分析与订正

Homogeneity and Correction for Observation Air Temperature at Toksun Station in Xinjiang Province

摘要: 采用托克逊国家一般气象观测站新、旧站址2015年1~12月同期气温观测资料,进行了对比分析。发现新、旧站的气温存在显著差异，新站与旧站平均气温、平均最高气温、平均最低气温存在显著性差异的月份占到78%，表明迁站导致托克逊站的观测气温出现了非均一性。初步分析表明，地理环境、下垫面性质、城区的热岛效应是造成气温出现显著差异的主要原因。用一元线性回归方法，把新站的气温资料订正到旧站，可以得到较准确的代表当地气温真实变化特点的均一性气温资料。

Abstract: The corresponding air temperature data were contrastively analyzed between new and old ob-servation station at Toksun national general weather station. It was found that there was signifi-cance difference in air temperature between new and old station. 78 percent of months had sig-nificance difference in average, average maximum, average minimum air temperature between new and old station. Preliminary analysis showed that significance difference in air temperature resulted from the geographical environment, underlying surface properties and urban heat island effect. The air temperature data of new station were emended to old station by unitary linear regression analysis, which could get homogeneity air temperature data representing local air temperature change.