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@TECHREPORT{Poppe:136107,
author = {Poppe, Dirk and Zimmermann, Jörg and Institut für
Atmosphärische Chemie (Jülich, 3) - ICG3},
title = {{A} supplement for the {RADM}2 chemical mechanism: the
photooxidation of isoprene},
volume = {2938},
number = {Juel-2938},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {PreJuSER-136107, Juel-2938},
series = {Berichte des Forschungszentrums Jülich},
pages = {38 S., Anh.},
year = {1994},
note = {Record converted from JUWEL: 18.07.2013},
abstract = {During recent years the importance of isoprene as a
reactive biogenic hydrocarbon has been recognized. Since
isoprene is poorly represented in RADM2 we have developed an
extension by a comprehensive isoprene chemistry. This
detailed mechanism (RADM-E) leads to the same results as
RADM2 for vanishing concentration of isoprene. The main
consequences are the enhanced production of organic nitrates
in the course of the isoprene oxidation and the improved
conservation of carbon compounds in RADM-E. The balanced
C-budget brings about higher concentrations of peroxy
radicals and organic peroxides. The formation of organic
nitrates leads to smaller amounts of other reactive
N-compounds, affecting directly NO" HNO., and PAN, and
indirectly uo H 0 '" J~ n Xl 2 2' Qi10 v S' Since RADM-E
includes 34 new species and i 12 additional reactions it is
not suitable for use in three dimensional transport and
chemistry calculation. Therefore a condensed version
(RADM-C) was developed with only 8 new species and 19
additional reactions. RADM-C gives approximately the same
results as RADM-E, if [NO,] > 0.1 ppb. RADM-E is also
compared with the chemical mechanism of Lurmann et al.
(1986), which is widely used and includes the chemistry of
isoprene in a different manner. in four scenarios, covering
typical situations with high impact of isoprene, the
chemical mechanisms RADM2 and RADM-C are compared, utilizing
a simple 2-boxmodel. Differences of concentrations can
exceed 10 percent for 0. and a factor of 2 for HO"
peroxides, NO" PAN, and HN03• Carbonyl compounds show even
higher differences.},
cin = {ICG-3 / ICG-3},
cid = {I:(DE-Juel1)ICG-3-20090406 / I:(DE-Juel1)VDB142},
shelfmark = {UMB - Atmospheric chemistry},
typ = {PUB:(DE-HGF)29},
url = {https://juser.fz-juelich.de/record/136107},
}