摘要
那曲地区作为我国“五大牧区”的重要组成部分,其地表温度的监测对农业、环境、气象等领域具有重要意义。为进一步分析FY-3B/VIRR地表温度遥感产品在那曲地区的适用性,利用第三极土壤水分和温度监测网络(Soil Moisture and Temperature Monitoring Network on the central TP,TP-SMTMN)地面观测数据,对2012年1月—2014年12月FY-3B/VIRR地表温度产品进行对比,并分析其地表温度分布变化特征。结果表明,FY-3B/VIRR地表温度与大多数地面观测站观测值的决定系数(R^(2))在0.5以上,FY-3B/VIRR地表温度值高于地面观测值,均方根误差(Root Mean Squard Error,RMSE)小于7 K。那曲地区地表温度南部较高,北部较低,整体呈现由北到南逐渐升高的格局;地表温度季节变化明显,夏季地表温度高于秋冬季;2012—2014年地表温度变化较小,中部地区变化较大。
The monitoring of land surface temperature in Naqu area,which is an important part of"five pastoral areas"of China,is of great significance to agriculture,environment,meteorology and other fields.In order to further analyze the applicability of Fengyun-3B(FY-3B)land surface temperature products in Naqu area,the ground observation data of the third polar soil moisture and temperature monitoring network on the central TP(TP-SMTMN)from January 2012 to December 2014 are selected to for comparison with FY-3B/VIRR land surface temperature products as well as the analysis of the features of land surface temperature distribution variation.The results show that the coefficient of determination(R^(2))between FY-3B land surface temperature and the observed values of most ground observation stations is more than 0.5.FY-3B land surface temperature is higher than the ground observed value,and the Root Mean Square Error(RMSE)is less than 7 K.The surface temperature in Naqu area is higher in the south and lower in the north,showing a gradually increasing pattern from north to south;seasonal variation of land surface temperature is significant,and the land surface temperature in summer is higher than that in autumn and winter;the surface temperature changed slightly from 2012 to 2014,and the land surface temperature in the middle area changed greatly.
作者
王艳丽
宋承运
WANG Yanli;SONG Chengyun(School of Spatial Information and Geomatics Engineering,Anhui University of Science and Technology,Huainan 232001,China;Key Laboratory of Aviation-aerospace-ground Cooperative Monitoring and Early Warning of Coal Mining-induced Disasters of Anhui Higher Education Institutes,Anhui University of Science and Technology,Huainan 232001,China)
出处
《无线电工程》
北大核心
2021年第12期1517-1522,共6页
Radio Engineering
基金
安徽省高等学校自然科学研究项目(KJ2017A072)。
