Remote Sensing Investigation on the Ground Thermal Field and its Influence on Air Pollution in an Industrial and Mining City
工矿城市地面热场的遥感调查及其对大气污染的影响

In Jincheng City, Shanxi Prmince, the two temporal thermal infrared images were taken by means of airborne thermal infrared scanner in early morning (from 5: 30 to 6: 30) and midday (from 13: 30 to 14: 30) in winter. With reference to simultaneous ground radiation temperature data, some of digital image processing methods, such as image quantization, geometric correction, and thermal field classification, were qsed for discovering the ground thermal field intensity in the city. Based on these, it was concluded that there is a very obvious ground thermal island effect in early morning and a vague one in midday, and the ground radiation temperature differences for both of the two tempral phases are about 10oC. In addition, the linear relationship between the lOw altitude air temperature and the ground radiation temperature were computed, and a bad innuence of the ground thermal fued on air pollution was found.