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The North Atlantic oscillation and the length of a vegetative period in Poland
Języki publikacji
Abstrakty
In the paper are discussed correlations of the beginning and the length of a vegetative period in Poland with of the NAO index. Analysis had been led for 8 stations completely representing the differentiation of climate in Poland during the 60 years period (1931-1990). There has been stated statistically significant correlations of the beginning and the length of a vegetative period with the NAO index, and no correlations the end of a vegetative period and the NAO index. For each station existing correlations are described dy linear equations . They show that there are move exact correlations of the beginning and the length of a vegetative period with an average value of the NAO index, being a difference of the air pressure between Gibraltar and SW Iceland for the period from January to March, than with Hurrell index (Lisboa-Stykkisholmur, December-March). Change of the NAO index about ą2dn changes the duration of a vegetative period on the area of Poland from 21 days (Zakopane) to 46 days (Szczecin) on the average about 31 days. It proves, that the changeability of the length of a vegetative period, which is one the most important ecological factor, is also considerably caused by conditions of circulation. Generally, the influence of the NAO on the beginning and the duration of the vegetative period is decreasing from NW and W edges of Poland in the direction of SE and E.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
199--210
Opis fizyczny
tab., wykr., bibliogr. 11 poz.
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Bibliografia
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUS1-0005-0073
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