VARIABILITY OF THE ICELANDIC LOW AND THE AZORES HIGH IN JANUARY AND THEIR INFLUENCE ON CLIMATIC CONDITIONS IN POLAND
DOI:
https://doi.org/10.2478/2318Keywords
climate change, atmospheric circulation, Icelandic Low, Azores High, Poland, winterAbstract
The study analysed long-term changes and the variability of the Icelandic Low and the Azores High in January and their influence on thermal, precipitation and nival conditions in Poland in the period 1901–2000. There were no statistically significant (0.05) trends of analysed centres of action in January in the 20th century. However, in the second half of the century the center of the Icelandic Low in January moved northwards and the sea-level pressure in the center of the Azores High increased significantly. The latter change was the reason for the significant increasing difference between the Azores High and the Icelandic Low. This change caused the intensification of western advection over Europe. Changes in sea-level pressure in the Icelandic Low and the longitude of the Azores High in January explain about 40% of temperature and snow cover variability in Poland. The variability of some features of the centres of action describes the changes of precipitation and snow cover in Poland better than the NAO index.
References
Gong D.-Y., Ho C.-H., 2002, The Siberian High and climate change over middle to high latitude Asia, Theor. Appl. Climatol., 72, 1–9.
Hasanean H.M., 2004, Variability of the North Atlantic subtropical high and associations with tropical sea-surface temperature, Int. J. Climatol., 24, 8, 945–957.
Hilmer M., Jung T., 2000, Evidence for a recent change in the link between the North Atlantic Oscillation and Arctic ice export, Geophys. Res. Lett., 27, 7, 989–992.
Kapala A., Mäch el H., Flohn H., 1998, Behaviour of the centres of action above the Atlantic since 1881. Part II: Associations with regional climate anomalies, Int. J. Climatol., 18, 23–36.
Lamb H.H., Johnson A.I., 1966, Secular variations of the atmospheric circulation since 1750, Geophys. Memoirs, 110, 14, London, 125 pp.
Katsoulis B.D., Makrogiannis T.J., Goutsidou Y.A., 1998, Monthly Anticyclonicity in Southern Europe and the Mediterranean Region, Theor. Appl. Climatol., 59, 51–59.
Mächel H., Kapala A., Flohn H., 1998, Behaviour of the centres of action above the Atlantic since 1881. Part I: Characteristics of seasonal and interannual variability, Int. J. Climatol., 18, 1–22.
Sahsamanoglou H.S., 1990, A contribution to the study of action centres in the North Atlantic. Int. J. Climatol., 10, 247–261.
Štepanek P., 2006, AnClim – software for time series analysis, ver. 4.8. Masaryk University, Brno; http://www.sci.muni.cz/~pest/AnClim.html.
Zhang Q.Y., Wang S.W., Wang W.Ch., 1995, Variations of the atmospheric centres of action in the Northern Hemisphere and their associations with the climate change in China; [in:] 6th International Meeting of Statistical Climatology, 231–234.
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Copyright (c) 2009 Małgorzata Falarz
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