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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:18 |
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Conference: Bucharest University Faculty of Physics 2010 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Severe Weather Phenomena in Southern Romania in Association with Blocking over Euro-Atlantic Area
Authors:
Simona Andrei and Iuliana Roman
Affiliation:
University of Bucharest, Faculty of Physics, P.O.BOX MG-11, Bucharest, Romania
National Meteorological Administration, Bucuresti-Ploiesti Ave., No.97, Bucharest, Romania
E-mail
simona.andrei.ro@gmail.com
Keywords:
blocking activity, severe weather phenomena
Abstract:
Blocking climatology over Euro-Atlantic region highlights two favourite action areas: the main one over East Atlantic-Western Europe sector and a secondary region in the proximity of Ural Mountain. Many studies have shown that the area over in wich it stagnates, atmospheric blocking can induce modifications of the thermal and precipitation regime, as well as the apearance of climatological extremes whose feed-backs have a direct effect upon the life of the inhabitants. No less important is its influence on weather aspects in adjacent areas. This paper aims to emphasize the correlation between atmospheric blocking in the Euro-Atlantic area and the severe weather phenomena in the southern part of Romania. For this purpose, Tibaldi-Molteni blocking index was calculated using daily data of 500hPa geopotential height re-analysis from NCEP/NCAR and for diagnosis of severe weather phenomena were used re-analysis daily data of SLP, 2m temperature, precipitation rate from NCEP/NCAR and the observational data from weather stations of the National Meteorological Administration. The time series covers a period of 10 years between 2000 and 2010. The results obtained show the influence of atmospheric blocking in the Euro-Atlantic aspects of weather in southern Romania.
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