Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region
The impact of nitrous acid (HONO) chemistry on regional ozone and particulate matter in Pearl River Delta region was investigated using the community multiscale air quality (CMAQ) modeling system and the CB05 mechanism. Model simulations were conducted for a ten-day period in October 2004. Compared...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2012/140932 |
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| author | Rui Zhang Golam Sarwar Jimmy C. H. Fung Alexis K. H. Lau Yuanhang Zhang |
| author_facet | Rui Zhang Golam Sarwar Jimmy C. H. Fung Alexis K. H. Lau Yuanhang Zhang |
| author_sort | Rui Zhang |
| collection | DOAJ |
| description | The impact of nitrous acid (HONO) chemistry on regional ozone and particulate matter in Pearl River Delta region was investigated using the community multiscale air quality (CMAQ) modeling system and the CB05 mechanism. Model simulations were conducted for a ten-day period in October 2004. Compared with available observed data, the model performance for NOx, SO2, PM10, and sulfate is reasonably good; however, predictions of HONO are an order of magnitude lower than observed data. The CB05 mechanism contains several homogenous reactions related to HONO. To improve the model performance for HONO, direct emissions, two heterogeneous reactions, and two surface photolysis reactions were incorporated into the model. The inclusion of the additional formation pathways significantly improved simulated HONO compared with observed data. The addition of HONO sources enhances daily maximum 8-hour ozone by up to 6 ppbV (8%) and daily mean PM2.5 by up to 17 ug/m3 (12%). They also affected ozone control strategy in Pearl River Delta region. |
| format | Article |
| id | doaj-art-ad9c00c350c54bce84e0dd1fc7956ad1 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-ad9c00c350c54bce84e0dd1fc7956ad12025-02-03T01:32:12ZengWileyAdvances in Meteorology1687-93091687-93172012-01-01201210.1155/2012/140932140932Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta RegionRui Zhang0Golam Sarwar1Jimmy C. H. Fung2Alexis K. H. Lau3Yuanhang Zhang4Department of Mathematics, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong KongAtmospheric Modeling and Analysis Division, National Exposure Research Laboratory, Office of Research and Development, US Environmental Protection Agency, RTP, NC 27711, USADepartment of Mathematics, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong KongDivision of Environment, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong KongCollege of Environmental Sciences and Engineering, Peking University, Beijing 100871, ChinaThe impact of nitrous acid (HONO) chemistry on regional ozone and particulate matter in Pearl River Delta region was investigated using the community multiscale air quality (CMAQ) modeling system and the CB05 mechanism. Model simulations were conducted for a ten-day period in October 2004. Compared with available observed data, the model performance for NOx, SO2, PM10, and sulfate is reasonably good; however, predictions of HONO are an order of magnitude lower than observed data. The CB05 mechanism contains several homogenous reactions related to HONO. To improve the model performance for HONO, direct emissions, two heterogeneous reactions, and two surface photolysis reactions were incorporated into the model. The inclusion of the additional formation pathways significantly improved simulated HONO compared with observed data. The addition of HONO sources enhances daily maximum 8-hour ozone by up to 6 ppbV (8%) and daily mean PM2.5 by up to 17 ug/m3 (12%). They also affected ozone control strategy in Pearl River Delta region.http://dx.doi.org/10.1155/2012/140932 |
| spellingShingle | Rui Zhang Golam Sarwar Jimmy C. H. Fung Alexis K. H. Lau Yuanhang Zhang Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region Advances in Meteorology |
| title | Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region |
| title_full | Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region |
| title_fullStr | Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region |
| title_full_unstemmed | Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region |
| title_short | Examining the Impact of Nitrous Acid Chemistry on Ozone and PM over the Pearl River Delta Region |
| title_sort | examining the impact of nitrous acid chemistry on ozone and pm over the pearl river delta region |
| url | http://dx.doi.org/10.1155/2012/140932 |
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