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| Titel |
Low-level mixing height detection in coastal locations with a scanning Doppler lidar |
| VerfasserIn |
V. Vakkari, E. J. O'Connor, A. Nisantzi, R. E. Mamouri, D. G. Hadjimitsis |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 8, no. 4 ; Nr. 8, no. 4 (2015-04-23), S.1875-1885 |
| Datensatznummer |
250116305
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| Publikation (Nr.) |
 copernicus.org/amt-8-1875-2015.pdf |
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| Zusammenfassung |
| Mixing layer height (MLH) is one of the key parameters in describing lower
tropospheric dynamics and capturing its diurnal variability is crucial,
especially for interpreting surface observations. In this paper we introduce
a method for identifying MLH below the minimum range of a scanning Doppler
lidar when operated at vertical. The method we propose is based on velocity
variance in low-elevation-angle conical scanning and is applied to
measurements in two very different coastal environments: Limassol, Cyprus,
during summer and Loviisa, Finland, during winter. At both locations, the
new method agrees well with MLH derived from turbulent kinetic energy
dissipation rate profiles obtained from vertically pointing measurements.
The low-level scanning routine frequently indicated non-zero MLH less than
100 m above the surface. Such low MLHs were more common in wintertime
Loviisa on the Baltic Sea coast than during summertime in Mediterranean
Limassol. |
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