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Spatial and temporal distribution of NO_2 and SO_2 in Inner Mongolia urban agglomeration obtained from satellite remote sensing and ground observations

Zheng, Caiwang and Zhao, Chuanfeng and Li, Yanping and Wu, Xiaolin and Zhang, Kaiyang and Gao, Jing and Qiao, Qi and Ren, Yuanzhe and Zhang, Xi and Chai, Fahe (2018) Spatial and temporal distribution of NO_2 and SO_2 in Inner Mongolia urban agglomeration obtained from satellite remote sensing and ground observations. Atmospheric Environment, 188 . pp. 50-59. ISSN 1352-2310 . http://resolver.caltech.edu/CaltechAUTHORS:20180619-091740847

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Abstract

Nitrogen dioxide (NO_2) and sulfur dioxide (SO_2) are important pollution gases which can affect air quality, human health and even climate change. Based on the combination of tropospheric NO_2 and SO_2 column density products derived from OMI satellite with the ground station observations, this study analyzed the spatial-temporal distribution of NO_2 and SO_2 amount in Inner Mongolia urban agglomerations. It shows that NO_2 increased continually from 2005 to 2011 at a rate of 14.3% per year and then decreased from 2011 to 2016 at a rate of −8.1% per year. SO_2 increased from 2005 to 2007 with a rate 9.7% per year. While with a peak value in 2011, SO_2 generally showed a decreasing trend of −1.6% per year from 2007 to 2016. With regard to the spatial pattern, the highest levels of NO_2 occur in Hohhot and Baotou, followed by Wuhai and Ordos, the least in Bayannur. Compared with NO_2, the spatial distribution of SO_2 is slightly different. The pollution of SO_2 is the most serious in Wuhai, followed by Hohhot and Baotou, and the lightest in Ordos and Bayannur. The diurnal variations of NO_2 and SO_2 are basically the same, which decrease from 0:00 to 6:00, then increase to a peak value at 8:00, and decrease from 8:00 to 15:00. The diurnal variation of NO_2 and SO_2 is highly related to the diurnal variation of both anthropogenic emission and boundary layer height. Differently, the long-term spatial-temporal distribution of NO_2 and SO_2 are more closely related to human activities.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.atmosenv.2018.06.029DOIArticle
ORCID:
AuthorORCID
Zhao, Chuanfeng0000-0002-5196-3996
Alternate Title:Spatial and temporal distribution of NO2 and SO2 in Inner Mongolia urban agglomeration obtained from satellite remote sensing and ground observations
Additional Information:© 2018 Elsevier Ltd. Received 19 March 2018, Revised 15 June 2018, Accepted 17 June 2018, Available online 18 June 2018. This work was supported by the Environmental Protection Department (EPD) (grant number 201509020), the National Natural Science Foundation of China (grant 41575143), the State Key Laboratory of Earth Surface Processes and Resource Ecology (2017-ZY-02), the China “1000 plan” young scholar program, the Fundamental Research Funds for the Central Universities (2017EYT18, 312231103).
Funders:
Funding AgencyGrant Number
Environmental Protection Department (China)201509020
National Natural Science Foundation of China41575143
State Key Laboratory of Earth Surface Processes and Resource Ecology2017-ZY-02
China “1000 Plan” Young Scholar ProgramUNSPECIFIED
Fundamental Research Funds for the Central Universities2017EYT18
Fundamental Research Funds for the Central Universities312231103
Subject Keywords:NO2; SO2; OMI; Inner Mongolia; Long-term trend; Spatial distribution
Record Number:CaltechAUTHORS:20180619-091740847
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180619-091740847
Official Citation:Caiwang Zheng, Chuanfeng Zhao, Yanping Li, Xiaolin Wu, Kaiyang Zhang, Jing Gao, Qi Qiao, Yuanzhe Ren, Xi Zhang, Fahe Chai, Spatial and temporal distribution of NO2 and SO2 in Inner Mongolia urban agglomeration obtained from satellite remote sensing and ground observations, Atmospheric Environment, Volume 188, 2018, Pages 50-59, ISSN 1352-2310, https://doi.org/10.1016/j.atmosenv.2018.06.029. (http://www.sciencedirect.com/science/article/pii/S1352231018304126)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87214
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:19 Jun 2018 17:24
Last Modified:05 Jul 2018 20:10

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