Typy cyrkulacji atmosfery a rodzaje chmur w Poznaniu
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Date
2009
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Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk
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Abstract
The frequency of appearance of cloud genera was analyzed taking into consideration their associated types of
circulation. The study is made on the basis of diurnal climatological observations carried out in Poznań in years
1971-1990. The Lityński objective classification of circulation types was used.
The research results prove that the cloud genera appear throughout the year depending on the atmospheric circulation.
High clouds are the most frequent during the anticyclonic types of circulation (table 1). As, Ns, St and Cb
clouds are associated with the cyclonic circulation. Ac, Sc and Си clouds form independently of the circulation type
which shows the biggest influence of the local conditions on the specific clouds.
Among the anticyclonic types of circulation the type NWA is conducive to forming of Ci, Cc, Ac, Sc, Си and Cb
clouds (table 2, fig. 1). Cs clouds are connected mainly to the SWA circulation. The air inflow from west is favourable
to form the As and Ns clouds. St clouds appear most often during the NA circulation.
During the intermediate circulation types, high and middle clouds form most frequently when the air flows
from the SW direction (table 3, fig. 2). Sc, St and Си clouds favour to appear during the NWo circulation. Cb clouds
form mainly in connection to the NE0 circulation.
In the midst of the cyclonic circulation the type SWc is conductive to occurring of: Ci, Cs, Ac, As, Ns and Sc
types of clouds (table 4, fig. 3). Cc, St, Си and Cb clouds are mainly associated with the NWc circulation.
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Citation
Badania Fizjograficzne, Seria A, Tom 60, 2009, s. 133-145
Seria
Seria A - Geografia Fizyczna TOM 60;
ISBN
978-83-7654-057-3
ISSN
0067-2807