the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Non-agricultural ammonia emissions in urban China
Abstract. The non-agricultural ammonia (NH3) emissions in cities have received little attention but could rival agricultural sources in term of the efficiency in PM formation. The starting point for finding credible solutions is to comprehensively establish a city-specific Non-agricultural Ammonia Emission Inventory (NAEI) and identify the largest sources where efforts can be directed to deliver the largest impact. In this paper, I present a NAEI of 113 national key cities targeted on environmental protection in China in 2010, which for the first time covers NH3 emissions from pets, infants, smokers, green land, and household products. Results show that totally 210 478 Mg, the NH3 emissions from traffic, fuel combustion, waste disposal, pets, green land, human, and household products are 67 671 Mg, 56 275 Mg, 44 289 Mg, 23 355 Mg, 7509 Mg, 7312 Mg, and 4069 Mg, respectively. The NH3 emission intensity from the municipal districts ranges from 0.08 to 3.13 Mg km−2 yr−1, with a average of 0.84 Mg km−2 yr−1. The high NH3 emission intensities in Beijing-Tianjin-Hebei region, Yangtze River Delta region and Pearl River Delta region support the view that non-agricultural NH3 sources play a key role in city-scale NH3 emissions and thus have potentially important implications for secondary PM formation (ammonium-sulfate-nitrate system) in urban agglomeration of China. Therefore, in addition to current SO2 and NOx controls, China also needs to allocate more scientific, technical, and legal resources on controlling non-agricultural NH3 emissions in the future.
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SC C962: 'Beijing Ammonia measurments from Aura TES', John Worden, 31 Mar 2014
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RC C1659: 'Review comments for manuscript titled "Non-agricultural ammonia emissions in urban China"', Anonymous Referee #1, 23 Apr 2014
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RC C2889: 'Anonymous Referee #2', Anonymous Referee #2, 29 May 2014
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AC C3142: 'Withdrawal Request Letter', Yunhua Chang, 03 Jun 2014
- Printer-friendly version
- Supplement
-
SC C962: 'Beijing Ammonia measurments from Aura TES', John Worden, 31 Mar 2014
-
RC C1659: 'Review comments for manuscript titled "Non-agricultural ammonia emissions in urban China"', Anonymous Referee #1, 23 Apr 2014
-
RC C2889: 'Anonymous Referee #2', Anonymous Referee #2, 29 May 2014
-
AC C3142: 'Withdrawal Request Letter', Yunhua Chang, 03 Jun 2014
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