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| Titel |
Trace gas and particle emissions from open biomass burning in Mexico |
| VerfasserIn |
R. J. Yokelson, I. R. Burling, S. P. Urbanski, E. L. Atlas, K. Adachi, P. R. Buseck, C. Wiedinmyer, S. K. Akagi, D. W. Toohey, C. E. Wold |
| 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. 14 ; Nr. 11, no. 14 (2011-07-18), S.6787-6808 |
| Datensatznummer |
250009916
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| Publikation (Nr.) |
 copernicus.org/acp-11-6787-2011.pdf |
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| Zusammenfassung |
| We report airborne measurements of emission factors (EF)
for trace gases and PM2.5 made in southern Mexico in March of 2006 on 6
crop residue fires, 3 tropical dry forest fires, 8 savanna fires, 1 garbage
fire, and 7 mountain pine-oak forest fires. The savanna fire EF were
measured early in the local dry season and when compared to EF measured late
in the African dry season they were at least 1.7 times larger for NOx,
NH3, H2, and most non-methane organic compounds. Our measurements
suggest that urban deposition and high windspeed may also be associated with
significantly elevated NOx EF. When considering all fires sampled, the
percentage of particles containing soot increased from 15 to 60 % as the
modified combustion efficiency increased from 0.88 to 0.98. We estimate that
about 175 Tg of fuel was consumed by open burning of biomass and garbage and
as biofuel (mainly wood cooking fires) in Mexico in 2006. Combining the fuel
consumption estimates with our EF measurements suggests that the above
combustion sources account for a large fraction of the reactive trace gases
and more than 90 % of the total primary, fine carbonaceous particles
emitted by all combustion sources in Mexico. |
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