喀什站高空温度资料均一性检验与订正  

Homogeneity Test and Correction of the Upper Air Temperature in Kashgar Meteorological Station

作　　者：胡义成[1,2] 张正阳[2] 王秋香[2] HU Yicheng;ZHANG Zhengyang;WANG Qiuxiang(Institute of Desert Meteorology,China Meteorological Administration,Urumqi 830002,China;Meteorological Information Center of Xinjiang Uygur Autonomous Region,Urumqi 830002,China)

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002 [2]新疆气象信息中心,新疆乌鲁木齐830002

出　　处：《沙漠与绿洲气象》2019年第6期65-72,共8页Desert and Oasis Meteorology

基　　金：中亚大气科学研究基金项目(CAAS201808);中国沙漠气象科学研究基金(Sqj2015005)。

摘　　要：利用加拿大环境部气候研究中心研发的RHtest均一化检验方法,结合历史台站沿革信息对喀什站各标准等压面高空温度资料进行了均一性检验和分析。结果表明:850~300 hPa共6个层次的高空日温度观测资料序列完整性较好。08时100 hPa月平均温度的缺测率>3%,完整性较差,20时100 hPa的完整性最差,缺测率高达11.44%,其他层次的完整性则较好。喀什站温度资料的非均一性主要是由于台站位置变动、观测仪器换型、观测规范变更和辐射误差订正方法的变化引起的。在订正过程中发现,为了保证订正序列的可信度,需要充分考虑到原始观测序列的缺测率。08时年温度序列的断点数量要明显多于20时,08时序列的订正率达到了85.71%,而20时仅有100 hPa一条序列做了订正。Using the RH test method developed by Environment Canada and the historical meta data,the homogeneity test was carried out to the mandatory level temperature data of the Kashgar radiosonde station.The results showed that there has a good integrity of the six mandatory level daily temperature series 850 hPa to 300 hPa.The integrity of monthly mean temperature is poor,the missing rate is more than 3%in 100 hPa at 08:00.The integrity of monthly mean temperature is the worst,and the missing rate is up to 11.44%in 100 hPa at 20:00.The integrity of other levels are better.The station location change,update of observation systems,observation specification change and the changes of radiation correction method are the main causes for the inhomogeneity in the sounding geopotential temperature data in Kashgar.In order to ensure the reliability of the correction sequence,we found that the missing rate of the original observation sequence should be fully taken into account.The breakpoints at 08:00 are obviously more than at 20:00 in annual temperature series,and the correction rate reached 85.71%in series at 08:00,but only one 100 hPa sequence was corrected at 20:00.

关 键 词：喀什 温度 均一性 断点 订正 

分 类 号：P423[天文地球—大气科学及气象学]