Experimental Study of the Vertical Structure of the Lower Troposphere over a SmallGreek Island in the Aegean Sea.

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Bibliographic Details
Title:	Experimental Study of the Vertical Structure of the Lower Troposphere over a SmallGreek Island in the Aegean Sea.
Authors:	Helmis, C. G., Jacovides, C., Asimakopoulos, D. N., Flocas, H. A.
Source:	Journal of Atmospheric & Oceanic Technology. Aug2002, Vol. 19 Issue 8, p1181. 12p.
Subjects:	Troposphere, Atmospheric boundary layer
Geographic Terms:	Aegean Sea
Abstract:	An experimental campaign was carried out on a small Greek island that is characterized by complex terrain; its aim was to study the local characteristics of the vertical structure of the atmospheric boundary layer (ABL). The instrumentation was installed close to the shoreline and consisted of a 13-m-high meteorological mast instrumented at three levels, and a high-range vertical monostatic sodar. Tethered balloon flights were carried out for 3 days under different atmospheric conditions. The analysis of the available data revealed interesting features of the vertical structure of the atmosphere over the island, with the development of a convective internal boundary layer (IBL) within the first 150 m above the ground, while the marine boundary layer (MBL) formed at higher altitudes, up to 450 m. Buoyant oscillations appear within the MBL in the form of gravity waves with frequencies of 7 min. Theoretical calculations of the IBL height verified the experimental results. During the night, a complex wind flow forms in the lower 250–300 m, resulting from the development of katabatic flows and topographic channeling. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	An experimental campaign was carried out on a small Greek island that is characterized by complex terrain; its aim was to study the local characteristics of the vertical structure of the atmospheric boundary layer (ABL). The instrumentation was installed close to the shoreline and consisted of a 13-m-high meteorological mast instrumented at three levels, and a high-range vertical monostatic sodar. Tethered balloon flights were carried out for 3 days under different atmospheric conditions. The analysis of the available data revealed interesting features of the vertical structure of the atmosphere over the island, with the development of a convective internal boundary layer (IBL) within the first 150 m above the ground, while the marine boundary layer (MBL) formed at higher altitudes, up to 450 m. Buoyant oscillations appear within the MBL in the form of gravity waves with frequencies of 7 min. Theoretical calculations of the IBL height verified the experimental results. During the night, a complex wind flow forms in the lower 250–300 m, resulting from the development of katabatic flows and topographic channeling. [ABSTRACT FROM AUTHOR]
ISSN:	07390572
DOI:	10.1175/1520-0426(2002)019<1181:ESOTVS>2.0.CO;2