【摘要】 近年来国内外利用遥感方法在陆面温度精确反演中开展了大量的研究工作 ,采用了一个在大区域上适用的由 NOAA/AVHRR数据反演陆面温度的方法 ,反演中国晴空条件下各月和全年平均陆面温度 ,分析了中国陆面温度的分异规律 ,并与气温的分异规律作了对比 ,同时对中国土地利用 /土地覆盖变化研究 (LUCC)样带上的陆面温度变化进行了分析。这项工作从晴空条件重新认识了地面温度场的空间分异 ,对于研究中国陆地土壤蒸发、植物光合作用、土地覆盖的分布具有重要的指示意义。更多还原

【Abstract】 By using a suitable split window algorithm on large scale, the authors retrieved the yearly and monthly land surface temperature (from 1982 to 1993) from the thermal bands of NOAA~AVHRR data set over China. The result indicates that the variation of LST has some features and is different from that of air temperature.\;As to LST, the hottest part is in Northwest drought region, the higher LST part is in Southeast region, and the low LST parts are in Tibet plateau and Northeast region. Conversely, as to air temperature, the hottest part is located at Southeast region, the higher part is located at Northwest drought region, and the low air temperature parts are suited at Tibet plateau and Northeast region. Moreover, there is no 0OC isotherm of annual LST over China, but there exists obvious 0OC isotherm of annual air temperature. Further, the 0OC isotherm of LST in January lies higher in latitude than that of air temperature. And Eastern Tibet and Western Tibet have different seasonal features of LST.\;Our work indicates that using thermal band of NOAA\|AVHRR is a feasible way to study land surface temperature. The variation of land surface temperature in China has great denoting significance in the study of the change of land cover in China and the impact of global change on China.更多还原