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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:36 |
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Conference: Bucharest University Faculty of Physics 2010 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Study of atmospheric boundary layer evolution using ceilometer CL-31
Authors:
Ioana Ungureanu, Sabina Stefan and V. Barna
Affiliation:
University of Bucharest, Faculty of Physics, P.O.BOX Mg-11, Bucharest, Romania
E-mail
ioana_ungureanu_18@yahoo.com
Keywords:
ceilometer, mixing layer height, clouds, fog, aerosols
Abstract:
The planetary boundary layer or atmospheric boundary layer is the lowest part of the troposphere where Earth’s surface interacts with large atmosphere flow and the place where atmospheric processes are developing with straightness intensity. The aim of the present paper is to present applications of the measurements using ceilometer CL-31 installed at the Faculty of Physics, Magurele ( 44.35 N, 26.03 E) to determine height of atmospheric boundary layer. The ceilometer Vaisala CL-31 is a mini-lidar used to determine intensity of backscattering radiation at a wavelength of 910 nm. The hourly data are organized into a database contains data files daily base. The CL-View and Lab-View software have been used for data processing to obtain images and backscatter profiles during the winter 2008-2009, the spring, summer and autumn of 2009. The evolution of atmospheric boundary layer height was determined using cloud bases, atmospheric soundings and Richardson numbers profiles for stable and instable atmospheric states.
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