Journal Article

FZJ-2014-01696

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Biotic stress: a significant contributor to organic aerosol in Europe?

Bergström, R. ; Hallquist, M. ; Simpson, D. ; Wildt, J.FZJ* ; Mentel, T. F.FZJ*

2014
EGU Katlenburg-Lindau

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Please use a persistent id in citations: http://hdl.handle.net/2128/5820  doi:10.5194/acpd-14-13603-2014

Abstract: We have investigated the potential impact on organic aerosol formation from biotic stress-induced emissions (SIE) of organic molecules from forests in Europe (North of Lat. 45° N). Emission estimates for sesquiterpenes (SQT), methyl salicylate (MeSA) and unsaturated C17-compounds, due to different stressors, are based on experiments in the Jülich Plant Atmosphere Chamber (JPAC), combined with estimates of the fraction of stressed trees in Europe based on reported observed tree damage.SIE were introduced in the EMEP MSC-W chemical transport model and secondary organic aerosol (SOA) yields from the SIE were taken from the JPAC experiments. The estimated current-situation SIE in Central and Northern European forests are found to contribute substantially to SOA in large parts of Europe. It is possible that the SIE contributes as much, or more, to organic aerosol than the constitutive biogenic VOC-emissions, at least during some periods. Based on the assumptions in this study, SIE-SOA are estimated to constitute between 50 and 70% of the total biogenic SOA (BSOA) in a current-situation scenario where the biotic stress in Northern and Central European forests causes large SIE of MeSA and SQT. An alternative current-situation scenario with lower SIE, consisting solely of SQT, leads to lower SIE-SOA, between 20 and 40% of the total BSOA.Hypothetical future scenarios with increased SIE, due to higher degrees of biotic stress, show that SOA formation due to SIE can become even larger. ...

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Contributing Institute(s):

1. Pflanzenwissenschaften (IBG-2)

Research Program(s):

1. 89582 - Plant Science (POF2-89582) (POF2-89582)

Appears in the scientific report 2014

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Database coverage:
; ; ; SCOPUS

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