期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2008
卷号：1
出版社：IOP Publishing
摘要：In this paper the statistical analysis of the wind field measured by a Doppler
sodar is used to characterize the local circulation at the Tyrrhenian sea
coastal site of the Pratica di Mare airfield. Daily behaviour of the wind
direction and intensity, as a function of the season, is highlighted and the
existence of two nocturnal alternative components of the local circulation is
evidenced. Rawinsonde data were used to determine geostrophic wind values. The
comparison between low level and geostrophic wind directions allowed to
establish the influence of the synoptic scale forcing in determining both which
of the two nocturnal currents can be observed at the site and how their
directions evolve during the day. Numerical simulations carried out by using the
Colorado State University Mesoscale Model (CSUMM) confirm the statistical
analysis results and allow to depict the low level wind field patterns in the
area. The use of data from ECMWF analysis is proposed in cases in which
rawinsonde data are not available to enquire on the synoptic scale forcing.
