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000136107 041__ $$aGerman
000136107 084_0 $$2ZB$$aUMB - Atmospheric chemistry
000136107 0881_ $$aJuel-2938
000136107 088__ $$2JUEL$$aJuel-2938
000136107 1001_ $$0P:(DE-Juel1)16311$$aPoppe, Dirk$$b0$$ufzj
000136107 245__ $$aA supplement for the RADM2 chemical mechanism: the photooxidation of isoprene
000136107 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c1994
000136107 300__ $$a38 S., Anh.
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000136107 4900_ $$0PERI:(DE-600)2414853-2$$aBerichte des Forschungszentrums Jülich$$v2938
000136107 500__ $$aRecord converted from JUWEL: 18.07.2013
000136107 520__ $$aDuring 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.
000136107 540__ $$aNeither this book nor any part of it may be reproduced or transmitted in any form or by any  means, electronic or mechanical, including photocopying, microfilming, and recording, or by any information storage and retrieval  system, without permission in writing from the publisher.
000136107 653__ $$aisoprene degradation
000136107 650_4 $$aatmospheric chemistry
000136107 650_4 $$aatmospheric circulation
000136107 650_4 $$aatmospheric concentration
000136107 650_4 $$aatmospheric diffusion
000136107 650_4 $$aatmospheric distribution
000136107 650_4 $$aatmospheric exchange process
000136107 650_4 $$aatmospheric gas
000136107 650_4 $$aatmospheric model
000136107 650_4 $$aatmospheric monitoring
000136107 650_4 $$aatmospheric transport
000136107 650_4 $$aisoprene
000136107 7001_ $$0P:(DE-Juel1)VDB1843$$aZimmermann, Jörg$$b1$$ufzj
000136107 7102_ $$aInstitut für Atmosphärische Chemie (Jülich, 3) - ICG3
000136107 8564_ $$uhttps://juser.fz-juelich.de/record/136107/files/Juel_2938_Poppe.pdf$$yOpenAccess
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