【摘要】 以大气探测卫星Aura上所搭载的臭氧观测仪(Ozone Monitor-ing Instrument,OMI)传感器所得的SO2数据产品为依据,结合遥感图像处理技术和地理信息系统分析方法,重点解译了甘肃省兰州市区2009—2010年采暖期和非采暖期SO2空间分布情况。从总体上看,研究区采暖期和非采暖期存在的SO2高值区域不同,采暖期SO2高值区主要存在于兰州市中东部,非采暖期主要存在于兰州市西部。与2005年SO2空间分布情况对比发现,中高柱量(DU>0.81)浓度SO2柱量值区的范围明显增加,而最高值区域范围缩小。该技术通过建立数据平台,能够对环境中任意某个点(栅格数据)随时提取进行评价,做到实时远程监测。更多还原

【Abstract】 The present paper aims at interpreting the space distribution of SO2 in the atmosphere of Lanzhou city,GanSu province during heating period and non-heating period in 2009 and 2010.The data based on the SO2 data obtained by OMI(Ozone Monitoring Instrument) sensor carried on National Aeronautics and Space Administration atmospheric satellite,Aura which is used for the observation and research on earth’s ozone layer,air quality and climate change.These data were analyzed with the remote sensing image processing and geographic information system analysis which including extract,filter,spatial interpolation and raster calculator.In general,different heating periods caused different high value area of SO2 distribution.The emission of SO2 in the studied areas was caused by many influencing factors such as terrain,climate,industrial layout,population etc.It could be observed that high value of SO2 existed in the areas of some districts in central-eastern of Lanzhou like Chengguan,Anning,Qilihe during heating period and others districts located in western regions like Honggu,Xigu during non-heating period.The main reason is that SO2 mainly comes from the consumption of raw materials and fuel containing sulfur in industrialized areas during non-heating periods.During the heating periods,on the other hand,SO2 mainly comes from the burning of sulfur-contained fuel of living heating,therefore we can see that the high SO2 value areas appear in the densely populated regions.Compared with the SO2 spatial distribution during non-heating period and heating period in 2005,the range of high DU value shrunk obviously,but the middling value range(DU>0.81) became larger.This is attributed to the reduction of the use of sulfur-containing raw materials and the expansion of urban area as well as the increase of population.The development and application of this technology have provided an economic,reliable and novel perspective to recognize the atmospheric compositions,atmospheric environmental changes and air pollution dynamic.更多还原