2022年夏秋季青海湖湖面水温与气温观测综合分析  

Observation and Analysis of Surface Water Temperature and Air Temperature in Lake Qinghai in Summer and Autumn of 2022

作　　者：李宛桐 张志龙 李肖霞[1,3] 王鑫龙 仵建勋 刘圆 史静 张昊楠 LI Wantong;ZHANG Zhilong;LI Xiaoxia;WANG Xinlong;WU Jianxun;LIU Yuan;SHI Jing;ZHANG Haonan(Meteorological Sounding Engineering Technology Research Center of CMA,Beijing 100081;Tianjin Meteorological Radar Research&Trial Centre,Tianjin 300061;Meteorological Observation Centre of CMA,Beijing 100081;National Satellite Meteorological Center,Beijing 100081;Northwest Institute of Nuclear Technology,Xinjiang,Urumchi 841700)

机构地区：[1]中国气象局气象探测工程技术研究中心,北京100081 [2]天津气象雷达研究试验中心,天津300061 [3]中国气象局气象探测中心,北京100081 [4]国家卫星气象中心,北京100081 [5]西北核技术研究院,乌鲁木齐841700

出　　处：《气象科技》2024年第6期850-857,共8页Meteorological Science and Technology

基　　金：中国气象局创新发展专项(CXFZ2023J020和CXFZ2023J065);中国气象局气象探测中心科技创新项目(MOCCX202406);中国气象局气象探测中心青年科技课题(MOCQN202210)资助。

摘　　要：利用青海湖风云卫星“湖海”协同观测试验的漂流观测仪数据,分析青海湖水温与气温的变化特征及相关性,并结合青海湖周边自动气象站资料,分析湖陆气温变化特征的差异。研究结果表明:青海湖水温与气温存在一定的相关性,其分钟值的相关系数为0.71,日均值的相关系数为0.73,水温与气温日变化均呈单峰型,升降阶段基本相同,但水温日变化的幅度明显小于气温,且下降时间要早于气温;青海湖湖面气温与陆面气温同样存在着相关性,二者的发展变化趋势是一致的,但日变化存在一定的错峰现象,陆面气温的峰值是提前的,而谷值是滞后的。Lakes are important parts of land water resources,and their surface water temperatures are the most sensitive and rapid response to climate and environmental changes.An accurate understanding of their changing characteristics is highly important for analysing and understanding global climate change and improving the ecological environment of lakes.In July 2022,the Meteorological Observation Centre of China Meteorological Administration and the National Satellite Meteorological Centre jointly deploy drift buoys at the China Radiometric Calibration Site of remote sensing satellite(CRCS)to carry out the Fengyun Satellite“lake-sea”cooperative observation experiment.Two sets of drift buoys are deployed on the line from Haixin Mountain to the southeast of Lake Qinghai.In this paper,we use data from the drift buoy from 10 July to 30 September,2022,combined with data from four sets of automatic meteorological stations on the land around Lake Qinghai,to analyse the characteristics and correlations between the changes of water temperature and air temperature in Lake Qinghai,and the differences in the characteristics of the changes of air temperature on the lake and land.To ensure the reasonableness of the test data,quality control of the test data is conducted,including spatial consistency checks,climatological threshold checks and temporal consistency checks,and a total of 13488 sets of water temperature data and 20232 sets of air temperature data are screened out.The analysis results of the above data indicate that there is a certain correlation between water temperature and air temperature in Lake Qinghai,the correlation coefficient of the minute value is 0.71,and the correlation coefficient of the daily mean value is 0.73.The diurnal variations of water temperature and air temperature are unimodal,and the rising and falling stages are basically the same;however,the diurnal variations of water temperature are obviously smaller than those of air temperature,and the decreasing time is earlier than that of air temperat

关 键 词：漂流观测仪 水温 气温 青海湖 

分 类 号：P412.1[天文地球—大气科学及气象学]