Stable carbon isotopic composition of biomass burning emissions – implications for estimating the contribution of C3 and C4 plants

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Abstract C 3 C 4 C 3 C 4 CO 2 CH 4 CO 2 13 C signature. CO in particular showed a distinct dependence on burning conditions; flaming emissions were enriched in 13 C compared to smouldering combustion emissions. For CH 4 C 3 13 C -enriched) and C 4 13 C -depleted). This indicates that while it is possible to distinguish between fires that were dominated by either C 3 C 4 δ 13 C signature of emissions. Besides laboratory experiments, we sampled gases and carbonaceous aerosols from prescribed fires in the Niassa Special Reserve (NSR) in Mozambique, using an unmanned aerial system (UAS)-mounted sampling set-up. We also provided a range of C 3: C 4 contributions to the fuel and measured the fuel isotopic signatures. While both OC and EC were useful tracers of the C 3 C 4 C 3: C 4 ratio in the field or other processes caused this depletion. Although additional field measurements are needed, our results indicate that C 3 C 4 source ratio estimation is possible with most BB products, albeit with varying uncertainty ranges.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Stable carbon isotopic composition of biomass burning emissions – implications for estimating the contribution of C₃ and C₄ plants ; volume:22 ; number:4 ; year:2022 ; pages:2871-2890 ; extent:20
Atmospheric chemistry and physics ; 22, Heft 4 (2022), 2871-2890 (gesamt 20)

Creator: Vernooij, Roland
Dusek, Ulrike
Popa, Maria Elena
Yao, Peng
Shaikat, Anupam
Qiu, Chenxi
Winiger, Patrik
van der Veen, Carina
Eames, Thomas Callum
Ribeiro, Natasha
van der Werf, Guido R.

DOI: 10.5194/acp-22-2871-2022

URN: urn:nbn:de:101:1-2022031004271606884861

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 15.08.2025, 7:26 AM CEST

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Associated

Vernooij, Roland
Dusek, Ulrike
Popa, Maria Elena
Yao, Peng
Shaikat, Anupam
Qiu, Chenxi
Winiger, Patrik
van der Veen, Carina
Eames, Thomas Callum
Ribeiro, Natasha
van der Werf, Guido R.

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Stable carbon isotopic composition of biomass burning emissions – implications for estimating the contribution of C<sub>3</sub> and C<sub>4</sub> plants

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