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| Titel |
Segregation in the Atmospheric Boundary Layer – A Discussion |
| VerfasserIn |
Ralph Dlugi, Martina Berger, Michael Zelger, Andreas Hofzumahaus, Franz Rohrer, Frank Holland, Keding Lu, Anywhere Tsokankunku, Matthias Sörgel, Gerhard Kramm, Nicole Mölders |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250135648
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| Publikation (Nr.) |
 EGU/EGU2016-16539.pdf |
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| Zusammenfassung |
| Segregation is a well known topic in technical chemistry and means an incomplete mixing of
the reactants. Incomplete mixing reduces the rate of reaction which is of utmost importance
in technical chemistry but has been payed less attention in atmospheric chemistry. Different
observational and modelling studies on chemical reactions in the turbulent and convective
atmospheric boundary layer are analysed for the influences of segregation in the systems
NO − NO2 − O3 and OH + V OCs (with main focus on isoprene). Also some
estimates on reactions like HO2 + NO (an important recycling mechanism for
OH) will be given. Especially, different terms of the intensity of segregation IS
(correlation coefficients, standard deviations of mixing ratios) are compared and
are related to characteristics of the flow regimes, such as mixing conditions and
Damköhler numbers. Also influences of fluctuations of actinic fluxes are discussed
which influence the mostly photo chemically driven reactions that were investigated. |
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