Some Characteristics of Precipitation in the Central Region of Romania in the 1961-2017 Period.
2019
Ottilia RUSZ
Monthly and yearly precipitation data (1961-2017) from six meteorological stations were analysed: Miercurea Ciuc (elevation 661 m), Braşov (536 m), Sibiu (443 m), Cluj-Napoca (413 m), Târgu Mureş (308 m) and a mountain station, Lăcăuti (1776 m). The following precipitation data were studied: precipitation amounts, maximum 24 hours precipitation, number of days with solid and liquid precipitation, number of days exceeded 0.1, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 30.0 mm. The standard deviation of yearly precipitation amount is the greatest in Lăcăuti (208 mm) and the smallest in Miercurea Ciuc (94 mm). Statistical significant trends in case of yearly precipitation amounts are characteristic for Cluj-Napoca (positive) and Lăcăuti (negative). Decreasing, statistical significant trends are indicated in case of number of days of solid precipitations (except Cluj-Napoca and Târgu Mureş). Generally, there are no changes in the number of days exceeding different thresholds, except Lăcăuti where decreasing, statistical significant trends are present in many cases. Two parts regression show 1982 as a moment of change in case of four stations. Based on the Palfai Drought Index, the driest years in Transylvania in the studied period were in 1987, 2003 and 2012 (when this index in some cases exceeded 6, which means moderate drought). In case of Lăcăuţi the PaDI values in all years are below 3, which means that no drought was present in this mountain area.
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