Variation of cloudiness in the mountain region on the example of the Sudetes
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Date
2017
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Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk
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Abstract
The purpose of the study is to present a comparison of cloudiness at different levels of a mountain
region and to emphasize the specific characteristics of cloud cover observed in valleys and on mountain summits,
based on the example of the Sudetes. The analysis is based on cloudiness observations made in Jelenia
Góra and on Mt Śnieżka in the years 1971–2015. The results obtained in the study demonstrate that the average
cloudiness generally increases with altitude in the Sudetes. However, in the colder half of the year, in anticyclonic
weather and thermal inversion conditions, this system may be inverted. There are more cloudless and
clear days on average in the valleys and more overcast and cloudy days recorded at the tops of the Sudetes. The
annual cloud cover amount is similar, due to atmospheric circulation. The diurnal pattern varies as an effect
of the influence of local conditions. The increase in cloudiness during the period from 1971–2015 is more
significant in Jelenia Góra than on Śnieżka.
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Keywords
cloudiness, mountain, valley, Jelenia Góra, Śnieżka, Sudetes
Citation
Badania Fizjograficzne, Seria A, Tom 68, 2017, s. 205-222