Variation Characteristics of Tropospheric NO2 Vertical Column Densities over Large and Small Cities of Xinjiang in Summer
MA Wen, LI Yan-hong*, WANG Pan-pan
College of Geographic Science and Tourism, Xinjiang Normal University, Key Laboratory of Xinjiang Uygur Autonomous Region; Xinjiang Laboratory of Lake Environment and Resources in Arid Area, Urumqi 830054, China
Abstract：Selecting the representative large and small towns which were Urumqi, Korla, Bole cities in Xinjiang, the ground-based mini MAX-DOAS measurement was carried out to observe the tropospheric NO2 vertical column density at town, industrial districts and farmland area in different grade cities from Jul to Aug 2014. It turned out(1) In the diurnal variation of the concentration of tropospheric NO2 vertical column density have peaks and troughs, the difference between its peak in the large and small towns, Urumqi(7.590×1015molec·cm-2)>Korla(7.559×1015molec·cm-2)>Bole(3.578×1015molec·cm-2); (2)During summer the tropospheric NO2 vertical column density has relationship with urban surface condition. Especially it has close relationship with the number of cars in the observational area, town(4.643×1015molec·cm-2)>industrial districts (4.469×1015molec·cm-2)>farmland area(2.425×1015molec·cm-2); (3)Under different weather conditions the tropospheric NO2 vertical column density : the minimum density appeared on a rainy day(3.082×1015molec·cm-2), it turned out the precipitation has an important influence on NO2.
Key words：Tropospheric NO2 vertical column density;Summer;Large and small cities;Ground-based MAX-DOAS
马 雯，李艳红*，王盼盼 . 新疆大中小城市夏季对流层NO2垂直柱浓度变化特征 [J]. 光谱学与光谱分析, 2016, 36(07): 2195-2199.
MA Wen, LI Yan-hong*, WANG Pan-pan . Variation Characteristics of Tropospheric NO2 Vertical Column Densities over Large and Small Cities of Xinjiang in Summer . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(07): 2195-2199.
