关键词: MODIS, 南京, 亮温, 热场, 城市热岛

Abstract: Urbanlization makes more cities and larger cities. City is the part has been changed by people.City has special regional environment. The heatisland, the inner part of the city temperature higher than the around of the city, is one of the most important city environment problems which was intensively concentrated and studied. Nanjing is one of the biggest cities along the Yangtze River. The heatisland of Nanjing is obvious, but it was rarely studied. This paper used two temporal MOIDS band 31 data to make the temperature brightness scene of Nanjing. The area and distribution of heatisland of Nanjing were analyzed based on temperature brightness scene. The average value and standard deviation value of the temperature brightness scene and comparative brightness temperature were used as the index to evaluate the intensity of heatisland of Nanjing. The two temporal temperature brightness scenes were also contrasted, and the differences of the two is obvious. Because the MODIS data has very high temporal resolution and is freely received in real time, it can be used to monitor urban thermal field.

Key words: MODIS, Nanjing, brightness temperature, thermal field, urban heatisland