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| Study of Tropospheric NO2 VCD from August 2013 to July 2014 with Ground-Based MAX-DOAS in Hefei and Comparison with OMI Observation |
| MOU Fu-sheng1,2, LI Ang1, XIE Pin-hua1,3,4, WANG Yang5, ZHANG Jie1, XU Jin1, WU Feng-cheng1, CHEN Hao1 |
1. The College of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
2. Key Laboratory of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Science, Hefei 230031, China
3. CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Science, Xiamen 361021, China
4. School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031, China
5. Max-Planck Institute for Chemistry, Mainz, Germany, D-55128 |
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Abstract The tropospheric NO2 vertical column density (VCD) in Hefei area was studied with groud-based MAX-DOAS data from August 2013 to July 2014.It is shown that tropospheric NO2 VCD season mean and month mean values changed greatly. The maximum value was in the winter while the minimum value was in the summer with the season mean value in winter of 2.09×1016 mol·cm-2 whihc was 2.2 times of that in the summer. The research of average diurnal variation in different seasons displayed that biggest discrepancy appeared in the afternoon. Comparison between MAX-DOAS measurements and OMI observations had been conducted and results had an good agreement, especially in cloud-free condition (R2=0.88).The season mean value of tropospheric NO2 VCD around Hefei area from OMI observation showed that high NO2 in Hefei was mainly from local accumulation instead of transportation.
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Received: 2015-05-19
Accepted: 2016-01-29
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