摘要
地表温度在地表与大气能量交换过程中扮演着重要角色。为研究地表温度反演算法之间的异同,以云南省富民县为例,利用Landsat8 TIRS为数据源,采用辐射传导方程算法、单窗算法、单通道算法、劈窗算法分别反演研究区地表温度,并用地面2m实测气温数据验证以及各算法相互交叉验证,统计各算法最大、最小值、平均温差、差值标准方差。结果表明,四种算法反演的地表温度区间值均比较接近,在四种算法中,辐射传输方程算法和单窗算法反演结果关联性高,可靠性强,反演结果可为分析城市热岛效应、地热开发等提供科学依据。
Surface temperature plays an important role in the energy exchange between the surface and the atmosphere.In order to study the similarities and differences between the surface temperature inversion algorithms,taking Fumin County,Yunnan Province as an example,using Landsat8 TIRS as the data source,the radiation conduction equation algorithm,the single-window algorithm,the single-channel algorithm,and the split-window algorithm were used to invert the surface of the study area respectively.The temperature is verified by the measured temperature data of 2m on the ground and the cross-validation of each algorithm,and the maximum,minimum,average temperature difference,and standard deviation of the difference of each algorithm are counted.The results show that the inversion values of the four algorithms are relatively close.Among the four algorithms,the inversion results of the radiative transfer equation algorithm and the single-window algorithm have high correlation and strong reliability,and the inversion results can be used to provide scientific basis for analysis of the urban heat island effect,geothermal development,etc.
作者
晁江琴
CHAO Jiang-qin(Zhaotong University,Zhaotong 657000,China;Jinsha River Basin Research Center,Zhaotong 657000,China;Yunnan University,Kunming 650000,China)
出处
《价值工程》
2022年第25期139-141,共3页
Value Engineering
基金
云南省教育厅科学研究基金项目(编号:2021J0486)。
