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| Titel |
Ideas and perspectives: on the emission of amines from terrestrial vegetation in the context of new atmospheric particle formation |
| VerfasserIn |
J. Sintermann, A. Neftel |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 12, no. 11 ; Nr. 12, no. 11 (2015-06-03), S.3225-3240 |
| Datensatznummer |
250117958
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| Publikation (Nr.) |
 copernicus.org/bg-12-3225-2015.pdf |
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| Zusammenfassung |
| In this article we summarise recent science which shows how airborne amines,
specifically methylamines (MAs), play a key role in new atmospheric particle
formation (NPF) by stabilising small molecule clusters. Agricultural
emissions are assumed to constitute the most important MA source, but given
the short atmospheric residence time of MAs, they can hardly have a direct
impact on NPF events observed in remote regions. This leads us to the
presentation of existing knowledge focussing on natural vegetation-related MA
sources. High MA contents as well as emissions by plants was already
described in the 19th century. Strong MA emissions predominantly occur during
flowering as part of a pollination strategy. The behaviour is species-specific,
but examples of such species are common and widespread. In
addition, vegetative plant tissue exhibiting high amounts of MAs might
potentially lead to significant emissions. The decomposition of organic
material constitutes another, potentially ubiquitous, source of airborne
MAs. These mechanisms would provide sources, which could be crucial for the
amine's role in NPF, especially in remote regions. Knowledge about
vegetation-related amine emissions is, however, very limited, and thus it is
also an open question how global change and the intensified cycling of
reactive nitrogen over the last 200 years have altered amine emissions from
vegetation with a corresponding effect on NPF. |
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