| NO2 is a very important atmospheric trace gases, which are involved in controlling levels of atmospheric oxidants O3 and OH, the concentration of O3 and OH decision oxidative capacity of the atmosphere; and NO2 is an important prerequisite for the formation of ozone matter in the formation of photochemical pollution plays unusual role. Atmospheric nitrogen oxides not only affect human health, and the radiation balance and oxidation in the atmosphere also has a very important role. And NO2 has a direct and indirect effects of radiation, and therefore will have an impact on climate change. This study selected small and medium urban oasis and Bole, Xinjiang Korla City, as the research object, through the farmland area, the city’s central business district(New Town and Old Town binding site) and two high-paying industrial area of the city during the heating period(winter, spring)and the non-heating season(summer and autumn) fixed monitoring, and record the actual weather conditions, the comparative analysis of the two cities tropospheric NO2 column density in different regions under different weather conditions, heating and non-heating period and the variation of the distribution of to provide a scientific basis for the rapid development of Arid Area of the management and integrated development of small and medium sized city, to provide a scientific basis for the Western economy on atmospheric environment protection in sustainable development, governance. The main draw the following conclusions:(1)Farmland area Bole higher tropospheric NO2 VCD different urban areas, the urban area of two different observations of tropospheric NO2 VCD level, NO2 concentrations higher than XLGC QDLDJ. Tropospheric NO2 CVD urban farmland scope and changes were 0.73-3.79 × 1015 molec cm-2,2.28-5.69 × 1015 molec cm-2.NO2 VCD diurnal variation of farmland and urban troposphere different regions,urban observation points 10:00 peaking after QDLDJ observation points tropospheric NO2 VCD downward trend, XLGC observation points tropospheric NO2 VCD show a slow decline; farmland area troposphere NO2 VCD is showing an upward trend has been. Under different weather conditions, different concentrations of tropospheric NO2, the highest concentration of NO2 cloud weather conditions, the lowest under sunny conditions, sunny with showers, sunny changing to light rain.(2)The heating period and urban areas, agricultural areas, industrial zones trends tropospheric nitrogen dioxide, non-heating period Bole basic difference is not,generally emerged in the morning and in the evening a higher concentration, thelower the concentration of daytime trends just heating and non-heating period of tropospheric nitrogen dioxide level vary. Minimum heating and non-heating period of tropospheric nitrogen dioxide concentration of the basic pillar is not much difference, but the difference between the maximum value table is large, generally about 10 times, it can be seen, the supply of heating tropospheric nitrogen dioxide column the concentration of the contribution rate is quite obvious, which should attract some attention, after the implementation of the Blue Sky project, the number of days in Xinjiang has increased the blue sky, the green measures worth continue.(3) Through observation and study of a typical medium-sized city on the southern slope of Tianshan Korla City tropospheric NO2 VCD are found in different areas of tropospheric NO2 VCD distribution, different trends, different regions of tropospheric NO2 VCD magnitude of change every day. Korla City tropospheric NO2 VCD range, the urban area 0.22-4.59 × 1015 molec cm-2, the observed area of farmland range 2.60-3.40 × 1015 molec cm-2, a new urban concentration maximum occurs at 18:00, that is to work before and after the peak of the new city and the old town of tropospheric NO2 VCD are basically the same; farmland regional tropospheric NO2 VCD compared with urban areas showing different trends, urban trends showing a V-shaped and U-shaped, farmland is noon Tropospheric NO2 VCD before lower after high noon, and perhaps a higher temperature has a great influence on farmland volatilization of NO2.(4) The heating period and urban areas, agricultural areas, industrial zones trends tropospheric nitrogen dioxide, non-heating period Korla basic difference is not, generally emerged in the morning and in the evening a higher concentration, the lower the concentration trend during the day, just heating and non-heating period of tropospheric nitrogen dioxide level vary. Minimum heating and non-heating period of tropospheric nitrogen dioxide concentration of the basic pillar is not much difference, but the difference between the maximum value table is large, some time or even 10 times As can be seen, the supply of tropospheric heating nitrogen dioxide column density contribution rate is relatively obvious. |
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