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| Titel |
Primary anthropogenic aerosol emission trends for China, 1990–2005 |
| VerfasserIn |
Y. Lei, Q. Zhang, K. B. He, D. G. Streets |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 3 ; Nr. 11, no. 3 (2011-02-02), S.931-954 |
| Datensatznummer |
250009283
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| Publikation (Nr.) |
 copernicus.org/acp-11-931-2011.pdf |
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| Zusammenfassung |
| An inventory of anthropogenic primary aerosol emissions in China was
developed for 1990–2005 using a technology-based approach. Taking into
account changes in the technology penetration within industry sectors and
improvements in emission controls driven by stricter emission standards, a
dynamic methodology was derived and implemented to estimate inter-annual
emission factors. Emission factors of PM2.5 decreased by 7%–69%
from 1990 to 2005 in different industry sectors of China, and emission
factors of TSP decreased by 18%–80% as well, with the measures of
controlling PM emissions implemented. As a result, emissions of PM2.5
and TSP in 2005 were 11.0 Tg and 29.7 Tg, respectively, less than what they
would have been without the adoption of these measures. Emissions of
PM2.5, PM10 and TSP presented similar trends: they increased in
the first six years of 1990s and decreased until 2000, then increased again
in the following years. Emissions of TSP peaked (35.5 Tg) in 1996, while the
peak of PM10 (18.8 Tg) and PM2.5 (12.7 Tg) emissions occurred in
2005. Although various emission trends were identified across sectors, the
cement industry and biofuel combustion in the residential sector were
consistently the largest sources of PM2.5 emissions, accounting for
53%–62% of emissions over the study period. The non-metallic mineral
product industry, including the cement, lime and brick industries, accounted
for 54%–63% of national TSP emissions. There were no significant
trends of BC and OC emissions until 2000, but the increase after 2000
brought the peaks of BC (1.51 Tg) and OC (3.19 Tg) emissions in 2005.
Although significant improvements in the estimation of primary aerosols are
presented here, there still exist large uncertainties. More accurate and
detailed activity information and emission factors based on local tests are
essential to further improve emission estimates, this especially being so
for the brick and coke industries, as well as for coal-burning stoves and
biofuel usage in the residential sector. |
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