Cookies?
Library Header Image
LSE Research Online LSE Library Services

Emissions of trace gases from Australian temperate forest fires: emission factors and dependence on modified combustion efficiency

Guérette, Elise-Andrée, Paton-Walsh, Clare, Desservettaz, Maximilien, Smith, T. E. L., Volkova, Liubov, Weston, Christopher J. and Meyer, Carl P. (2018) Emissions of trace gases from Australian temperate forest fires: emission factors and dependence on modified combustion efficiency. Atmospheric Chemistry and Physics, 18. pp. 3717-3735. ISSN 1680-7316

[img]
Preview
Text - Published Version
Available under License Creative Commons Attribution.

Download (4MB) | Preview
Identification Number: 10.5194/acp-18-3717-2018

Abstract

We characterised trace gas emissions from Australian temperate forest fires through a mixture of open-path Fourier transform infrared (OP-FTIR) measurements and selective ion flow tube mass spectrometry (SIFT-MS) and White cell FTIR analysis of grab samples. We report emission factors for a total of 25 trace gas species measured in smoke from nine prescribed fires. We find significant dependence on modified combustion efficiency (MCE) for some species, although regional differences indicate that the use of MCE as a proxy may be limited. We also find that the fire-integrated MCE values derived from our in situ on-the-ground open-path measurements are not significantly different from those reported for airborne measurements of smoke from fires in the same ecosystem. We then compare our average emission factors to those measured for temperate forest fires elsewhere (North America) and for fires in another dominant Australian ecosystem (savanna) and find significant differences in both cases. Indeed, we find that although the emission factors of some species agree within 20 %, including those of hydrogen cyanide, ethene, methanol, formaldehyde and 1,3-butadiene, others, such as acetic acid, ethanol, monoterpenes, ammonia, acetonitrile and pyrrole, differ by a factor of 2 or more. This indicates that the use of ecosystem-specific emission factors is warranted for applications involving emissions from Australian forest fires.

Item Type: Article
Official URL: https://www.atmospheric-chemistry-and-physics.net/...
Additional Information: © 2018 The Authors
Divisions: Geography & Environment
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QD Chemistry
Sets: Departments > Geography and Environment
Date Deposited: 03 May 2018 15:04
Last Modified: 20 Jul 2019 00:12
Projects: DP110101948 (NSW fires)
Funders: Australian Research Council
URI: http://eprints.lse.ac.uk/id/eprint/87761

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics