SEVEN YEARS (2004-2010) PRECIPITATION DISTRIBUTION IN TRANSYLVANIA (ROMANIA) FROM DAILY DATA
OTTILIA RUSZ1
1 Tārgu Mureş Weather Station, National Meteorological Administration, Libertăţii street, no. 111, Tārgu Mureş, ruszotti@freemail.hu
Abstract:- Seven years (2004-2010) precipitation distribution in Transylvania
(Romania) from daily data. Daily precipitation amount data from 21
meteorological stations were studied. These stations are located in the
following counties: Alba, Brasov, Cluj, Covasna, Harghita, Mures and Sibiu.
Factor analysis was applied in order to delimit areas with same precipitation
distribution patterns in Transylvania in the period 2004-2010. It was found 3
dominant factors which can explain 67.19 % of variance. All factors are related
to local conditions, namely to geographic position, but they are independent
from topography. Using factor loadings, 3 maps are presented, which reveals the
spatial influence of these 3 factors. For each meteorological station was made a
precipitation distribution figure. These figures and the 3 maps were made with
Arcmap software using spline with barriers interpolation method. Distribution
figures of stations defined by the same factor pattern are similar. The first
factor, responsible for less precipitation affects especially the south eastern
part of area. The third factor provides the highest amount of rainfall and
influence mainly the northern part of region. The south western part of
Transylvania is dominated by the second factor which insures the most balanced
precipitation pattern.
Key-words: precipitation, factor analysis, spline with barriers
interpolation, Transylvania
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