Badania Fizjograficzne, Seria A, Tom 67, 2016

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Warunki pluwialne w Poznaniu w latach 1981-2015
(Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk, 2016) Szyga-Pluta, Katarzyna; Grześkowiak, Katarzyna
The study covers the characteristics of pluvial conditions in Poznań in 1981–2015. There is a slight increase in the multiannual precipitation course, while the number of days with precipitation is decreasing. There is a significant growing trend of precipitation over 5 mm and 10 mm. Throughout the years, summer precipitation with a maximum in July and the smallest totals in the winter with a minimum in February prevail. The spring precipitation outweighs that in the autumn. In the course of annual daily precipitation totals, the interval of 1.1–5.0 mm tends to be least varied and occurs with an equal frequency throughout the year. Precipitation in the 0.1–1.0 mm range usually takes place in January and December. Precipitation over 5 mm usually occurs in the summer. July has the biggest frequency of moderately strong, strong, and very strong precipitation. According to the pluvial classification, July is the most frequently humid, very humid and extremely humid month while February – the driest one.