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《Meteorological Science and Technology》 2016-01
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Homogeneity Test and Correction of Temperature Series Influenced by Station Movement at Huzhu

Guo Shousheng;Yan Rong;Li Jinhu;Yan Liangdong;Li Haihong;Huzhu Meteorological Service;Qinghai Provincial Key Laboratory of Disaster Prevention and Reduction;Gonghe Meteorological Service;Department of Observation and Network,Qinghai Provincial Meteorological Service;Qinghai Institute of Meteorological Science;  
Meteorological station movement often leads to inhomogeneity of climate series.In order to study the homogeneity test and homogenization methods of single-station temperature series,improve the reliability of temperature data series at Huzhu meteorological station,the homogeneity test and correction are conducted before and after the Huzhu meteorological station movement based on the t-test and SHNT methods.The results show that impact of the Huzhu meteorological station movement on the homogeneity of temperature data series is significant.The adjustment results based on different methods(i.e.,linear regression,stepwise multiple linear regression,and parallel data of basic stations)are analyzed.The results show that the correction result of the stepwise multiple linear regression based on 15-years parallel observation data in basic station is better.The correction is conducted on the temperature data series before moving on the basis of the stepwise multiple linear regression.The climate tendency rate is 0.31℃/10 aafter correction,and the inhomogeneity of temperature series can be eliminated.
【CateGory Index】: P423;P412
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