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Τίτλος: Low-level mixing height detection in coastal locations with a scanning Doppler lidar
Συγγραφείς: Vakkari, V. 
O'Connor, E. J. 
Nisantzi, Argyro 
Mamouri, R. E. 
Major Field of Science: Engineering and Technology
Field Category: Environmental Engineering
Λέξεις-κλειδιά: Coastal locations;Scanning Doppler lidar;Tropospheric dynamics;Mixing layer height (MLH)
Ημερομηνία Έκδοσης: 23-Απρ-2015
Πηγή: Atmospheric Measurement Techniques, 2015, vol. 8, no.4, pp. 1875-1885
Volume: 8
Issue: 4
Start page: 1875
End page: 1885
Περιοδικό: Atmospheric Measurement Techniques 
Περίληψη: 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.
URI: https://hdl.handle.net/20.500.14279/8599
ISSN: 18678548
DOI: 10.5194/amt-8-1875-2015
Rights: © Author(s). This work is distributed under the Creative Commons Attribution 3.0 License.
Type: Article
Affiliation: Finnish Meteorological Institute 
University of Reading 
Cyprus University of Technology 
Εμφανίζεται στις συλλογές:Άρθρα/Articles

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