| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:42 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Selecting of spatial domain size for air circulation types in connection to climatological parameters
Authors:
N. BARBU(1,2), Sabina STEFAN (2), Florinela GEORGESCU (1)
Affiliation:
(1) National Meteorological Administration, Bucharest, Romania
(2)University of Bucharest, Faculty of Physics, P.O.BOX MG-11, Magurele,Romania Bucharest, Romania
E-mail
nicubarbu1982@yahoo.com
Keywords:
circulation type classifications, domain size, COST733 Action
Abstract:
The aim of this study is to investigate the dependence of circulation type classifications and surface climate parameters (temperature and precipitation) for different sizes of spatial domain. Two automated circulation type classifications named GrossWetter-Typen (GWT) and WetterLargenKlassifikation (WLK) developed in COST733 Action are used. This catalogues are run off for three spatial domains with different size centered over Romania. The daily gridded data sets used in this study was built up by National Centers for Environmental Prediction and National Center for Atmospheric Research (NCEP/NCAR). This data consist on seal level pressure (SLP), gepotential height at 925hPa and 500hPa, wind at 700hPa and water content for entire atmosphere. The data spatial resolution is 2.5x2.5 degrees lat/lon. The daily observational data obtained from European Climate Assessment & Dataset (ECA&D) are also used. The study is made for a period of 50 years, during 1961-2010. In order to determine the optimal domain size for each climatologically parameters the F-Test Two-Sample for variance is applied. Preliminary results indicate that the optimal domain size, centered over Romania, for circulation type classification is smaller for precipitation than for temperature.
|
|
|
|