重庆市巴南区气象观测站迁站前后气象资料均一性检测及订正

On Homogeneity Test and Correction on Meteorological Data Before and After Relocation of Meteorological Observation Station in Banan District,Chongqing

利用巴南区国家一般气象站1969-2013年的平均气温、极端最高气温、极端最低气温和2010年迁站对比观测期间新旧站的气温、相对湿度、风力等资料,对巴南气象站迁站观测资料进行统计对比分析.使用主观判断及RHtest和元数据相结合的方法对巴南的气温序列进行均一性检验.结果表明,2011年的迁站对平均气温、极端最高气温的影响较大,造成其序列的非均一性,对极端最低气温的影响相对较小.针对迁站对气温的影响,对迁站后的气温序列进行了订正,并运用线性趋向估计分析对订正效果做了评估,使其具有较好的均一性.

Analysis and comparison of the observation data collected by Banan meteorological station during the period of its relocation has statistically been conducted based on the data of 1)the average temperature,extreme maximum temperature,extreme minimum temperature of the period from 1969-2013,as well as 2)the temperature,relative humidity and wind of the new and old station locations during the observation comparison period in 2010 when its relocation took place.The method of combining subjective judgment and RHtest and metadata is used to test the homogenization of the temperature series in Banan.The results show that the station relocation in 2011 had great influence on the average temperature and the extreme maximum temperature,resulting in the heterogeneity of the sequence.However,the impact on the extreme minimum temperature was relatively small aking influence of relocating station on the observed temperature into consideration,the temperature series after the relocation is revised,and the linear trend estimation is used to evaluate the effect of the correction in order to achieve better uniformity.