Analysis of the Spatial and Temporal Distribution Variatio of Formaldehyde by the OMI Satellite Sensor

In recent years，the atmospheric environmental issues become increasingly significant.Formaldehyde (HCHO) as a kind of carcinogen，its global testing to understand the spatial and temporal distribution and content in the atmosphere，has important significance for the detection of air quality and public safety.The study on the use of satellite AURE mounted OMI (Ozone Monitoring Instrument) a new generation of atmospheric detection sensors，data for the 2005~2014 January，April，July，October Tianshui vertical columns of tropospheric HCHO concentrations of trace data for each year.By VISON，GIS and other software combined with the product handling，explores the spatial distribution of Tianshui area HCHO，the time variation and their influencing factors.The results show that: the study area，the vertical columns of tropospheric HCHO concentration in 2005 showing sustained growth trend in 2012，2012~2014 chronology exhibit significantly decreased;winter and summer HCHO vertical column concentrations significantly higher than the spring and autumn，which highest in summer and winter followed; the eastern part of the study area and adjacent areas in Shanxi\|parts of Gangu County，Wushan County，exhibits a significantly higher value and lower central region of HCHO Tianshui vertical column density，and in 2014 the performance of HCHO concentration in the study area values are generally higher.Studies have shown that remote sensing is important for large\|scale atmospheric environmental monitoring.