EJPAU 2006. Kalbarczyk E. , Kalbarczyk R. IDENTIFICATION OF ATMOSPHERIC DROUGHT PERIODS IN NORTH-WEST POLAND OVER 1965-2004

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2006
Volume 9
Issue 4

Topic:

Agronomy

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Kalbarczyk E. , Kalbarczyk R. 2006. IDENTIFICATION OF ATMOSPHERIC DROUGHT PERIODS IN NORTH-WEST POLAND OVER 1965-2004, EJPAU 9(4), #15.
Available Online: http://www.ejpau.media.pl/volume9/issue4/abs-15.html

IDENTIFICATION OF ATMOSPHERIC DROUGHT PERIODS IN NORTH-WEST POLAND OVER 1965-2004

Eliza Kalbarczyk, Robert Kalbarczyk
Department of Meteorology and Climatology, Agricultural University of Szczecin, Poland

ABSTRACT

The aim of the study was to estimate the frequency of occurrence, a degree of intensity and time and space variability of atmospheric drought periods during vegetation season of plants determined on the basis of relative precipitation index (RPI) and hydrothermal index (K) in north-west Poland. The material was mean-monthly values of air temperature and monthly total precipitation for the vegetation season (from April to September) over 1965-2004 from 12 IMGW stations situated in Pomerania. Occurrence of drought in Pomerania is a phenomenon which is remarkably space-variable and it applies to all Pomerania. However, the area located in the south-west can be considered as the most threatened with drought, and the area situated in the north of Pomerania as the least threatened. In the centre and east part of Pomerania the month with the most frequent occurrence of drought of different severity according to RPI was April, and in the western part – it was July. In almost all Pomerania drought occurred the least frequently in August, only along the Baltic coast – in September. In 1965-2004 no statistically significant tendency of RPI index variability was recorded. The values of the K hydrothermal index showed a downward tendency in subsequent years in April and May, which was significant at the level α <0.1 in April – in the south and north of Pomerania, and only in the south – in May.

Key words: atmospheric drought, relative precipitation index, hydrothermal index, Pomerania.

Eliza Kalbarczyk
Department of Meteorology and Climatology,
Agricultural University of Szczecin, Poland
Papieża Pawła VI 3, 71-469 Szczecin, Poland
email: elizkalb@agro.ar.szczecin.pl

Robert Kalbarczyk
Department of Meteorology and Climatology,
Agricultural University of Szczecin, Poland
Papieża Pawła VI 3, 71-469 Szczecin, Poland

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