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| Titel |
Behaviour of tracer diffusion in simple atmospheric boundary layer models |
| VerfasserIn |
P. S. Anderson, S. J.-B. Bauguitte |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 7, no. 19 ; Nr. 7, no. 19 (2007-10-08), S.5147-5158 |
| Datensatznummer |
250005216
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| Publikation (Nr.) |
 copernicus.org/acp-7-5147-2007.pdf |
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| Zusammenfassung |
| 1-D profiles and time series from an idealised atmospheric boundary layer
model are presented, which show agreement with boundary layer measurements
of polar NOx. Diffusion models are increasingly being used as the
framework for studying tropospheric air chemistry dynamics. Models based on
standard boundary layer diffusivity profiles have an intrinsic behaviour
that is not necessarily intuitive, due to the variation of turbulent
diffusivity with height. The simple model presented captures the essence of
the evolution of a trace gas released at the surface, and thereby provides
both a programming and a conceptual tool in the analysis of observed trace
gas evolution. A time scale inherent in the model can be tuned by fitting
model time series to observations. This scale is then applicable to the more
physically simple but chemically complex zeroth order or box models of
chemical interactions. |
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