Analysis of Mesoscale Patterns in Relation to Synoptic Conditionsover an Urban Mediterranean Basin |
| |
| Authors: | P Kassomenos H A Flocas S Lykoudis M Petrakis |
| |
| Institution: | (1) National Observatory of Athens, Institute of Meteorology and Physics of the Atmospheric Environment, Athens, Greece, GR;(2) Department of Applied Physics, Laboratory of Meteorology, University of Athens, Athens, Greece, GR |
| |
| Abstract: | Summary In this study day by day synoptic conditions are classified over the Attica peninsula for a period of sixteen years. Eight
synoptic categories which are demonstrated to be statistically distinct are selected with respect to the atmospheric circulation
in the lower troposphere. Furthermore, a methodology is proposed to classify the mesoscale patterns for the same period on
the basis of surface wind measurements, and this distinguishes eleven distinct mesoscale categories. In general, the frequency
analysis reveals that the anticyclonic circulation dominates while the weak mesoscale flows prevail, with preference in May
and June. A day by day cross tabulation of the synoptic flow patterns with the mesoscale categories is then performed in order
to identify the association of the synoptic conditions with the mesoscale flow regime. It was found that the synoptic conditions
at the level of 850 hPa are closely related to the observed surface local flows and therefore it is suggested that the synoptic
categories can be used for the identification of the most favourable mesoscale atmospheric circulation.
Received February 28, 1997 Revised May 22, 1997 |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
