为了探讨特定城市在热岛效应中的地表温度反演的有效方法,本文分别基于TM与MODIS影像并采用了目前较为成熟的单窗和劈窗算法对泰安市的地表温度进行反演,将泰安市各气象观测站的实测温度数据与两种算法的温度反演结果进行验证,通过反演结果对比分析,证明劈窗算法精度更高.并且,采用10年间的多期MODIS影像对泰安市热岛效应分析的劈窗算法的可行性和优势进行了普适性验证.实验结果证明,针对处于山区且地势起伏较大的泰安地区,劈窗算法能较好地减弱或消除上空大气含水量高对温度反演的影响,同时还能更好地获取地表比辐射率和大气透过率,而且反演温度的分布规律也符合研究区地貌和类型要素特征.最后,本文就分析结果给出了泰安市产生热岛效应的主要原因,并认为该区域城市化过程中的城市热岛效应正在进一步加剧.%In order to explore the effective method on retrieving land surface temperature(LST) of urban heat island effect in a specific city,the current mature mono-window and split-window algorithms were used to the LST in Tai'an city based on TM and MODIS images,and split-window algorithm was validated to have higher retrieval accuracy through the retrieving results of the two algorithms were comparatively analyzed,and verified with the measured temperatures of each meteorological observation station in Tai'an city.In addition,the feasibility and advantages of the split-window algorithm was verified by analyzing the urban heat island effect of Tai'an city according to multi-period MODIS images in 10 years.The experimental results show that,the split-window algorithm could weaken or eliminate the influence of high atmosphere water contents on temperature retrieval at the same time could obtain better surface emissivity and atmospheric transmittance in Tai'an area with mountainous and rugged terrain,and the temperature-retrieved distribution was also consistent with the geomorphological and landform feature characteristics of the study area.Finally,the main reasons were given on generating heat island effect Tai'an area and it is considered the heat island effect is being further intensified in the process of urbanization.
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