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| Titel |
Characterisation of the mixing height temporal evolution by means of a laser dial system in an urban area – intercomparison results with a model application |
| VerfasserIn |
M. A. García, M. L. Sánchez, B. Torre, I. A. Pérez |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 25, no. 10 ; Nr. 25, no. 10 (2007-11-06), S.2119-2124 |
| Datensatznummer |
250015926
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| Publikation (Nr.) |
 copernicus.org/angeo-25-2119-2007.pdf |
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| Zusammenfassung |
| Measurements of vertical and temporal variations in ozone and aerosol as
extinction over an urban area in Segovia, central Spain, were performed
during two summer months in 2004 by means of a commercial Nd:YAG laser DIAL
remote sensing system. The Differential Absorption Lidar (DIAL) technique
was applied and its description is given. From the profile data, a practical
determination of mixing height may be derived. A diurnal evolution for the
whole dataset is observed, the highest mean mixing height being reached at
16:00 GMT, 2150 m. The presence of a double-layer structure at night was
observed and the layers can be considered residual. On average, the lower
layer is formed at 670 m and the upper layer yielded mean heights ranging
between 1270 and 1390 m. The estimated mixing heights during the day are
also compared with those obtained from the Lagrangian HYSPLIT model. The
results show good statistical agreement between both approaches, mainly in
the early afternoon, with correlation coefficients around 0.7. |
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