Circulation background of the atmospheric precipitation in Central Europe (based on the Polish example)

Ustrnul, Zbigniew; Czekierda, Danuta

doi:10.1127/0941-2948/2001/0010-0103

Cited by 33 publications

(28 citation statements)

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“…air temperature (Ustrnul and Czekierda 2001). However, Degirmendžić et al (2004) estimate that in Poland, about 44% of precipitation variability in February and 46% in July are determined by circulation processes.…”

Section: Discussionmentioning

confidence: 98%

“…GWL takes into account, besides the surface pattern, the synoptic situation in the middle troposphere, which is especially important for the formation of precipitation (Ustrnul and Czekierda 2001). The frequencies of all 30 subtypes were calculated and then merged into 10 circulation types and 3 forms: zonal, half-meridional and meridional.…”

Section: Atmospheric Circulation Analysismentioning

confidence: 99%

“…These local variations suggest that a strong role is played by local factors, including orography, which influence regional changes (Uvo 2003;Jaagus et al 2010). However, the changes in atmospheric circulation are considered one of the main factors modifying pluvial characteristics (Ustrnul and Czekierda 2001). In recent years, much attention has been devoted to the links between atmospheric circulation and precipitation in Central Europe.…”

Section: Introductionmentioning

confidence: 99%

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Spatio-temporal changes in atmospheric precipitation over south-western Poland between the periods 1891–1930 and 1981–2010

Szymanowski

Wieczorek

Namyślak

et al. 2018

Theor Appl Climatol

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In this paper, we quantify the changes in precipitation distribution in south-western Poland between the periods 1891-1930 and 1981-2010. The average monthly precipitation totals available for 368 and 245 stations, respectively, are spatially interpolated and processed to calculate maps of differences and pluvial continentality indices for both periods. The maps are analysed against changes in atmospheric circulation and take into account the potential role of the mountain barrier of the Sudetes. The main findings are (1) winter totals generally increased in conjunction with a higher frequency of zonal circulation; it is more pronounced in the upper parts of the Sudetes due to orographic effects; (2) a decreased frequency of zonal circulation together with an increased frequency of southern flows has likely led to the reduction of precipitation in spring and autumn. These changes have led to a significant modification of the region's pluvial regime, mostly by decreasing continentality features (especially in the Sudetes and the western lowlands). In addition, the strong sheltering influence of the mountain barrier is observed, driving the preservation or even the enhancement of the continental pluvial characteristics in the north-eastern to eastern foregrounds of the Sudetes. This leads to the conclusion that in areas where long-term observed trends or future projections of precipitation are ambiguous, there may occur significant modifications in regional characteristics, especially as a result of changes in atmospheric circulation modified by local orography.

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Section: Discussionmentioning

confidence: 98%

Section: Atmospheric Circulation Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatio-temporal changes in atmospheric precipitation over south-western Poland between the periods 1891–1930 and 1981–2010

Szymanowski

Wieczorek

Namyślak

et al. 2018

Theor Appl Climatol

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“…The proposed classification is a compromise between the desire to minimise the number of weather types, subtypes and classes and the need to provide the maximum possible detail of the weather conditions on a given day (Ustrnul, 2000(Ustrnul, /2001. The large number of weather types eventually proposed in the classification is a good reflection of the actual weather conditions produced on days with very high pressure in Krakow.…”

Section: Discussionmentioning

confidence: 99%

“…The one element taken into account by Woś (1999) that this study excluded is daily precipitation totals. On the days studied, precipitation was very rare in Central Europe, just as in other regions (Ustrnul and Czekierda, 2001). Days without precipitation or with trace precipitation (<0.1 mm in 24 h) accounted for more than 80% of the total days studied and the highest precipitation recorded did not exceed 20 mm (precipitation of 10.1-20.0 mm was recorded only twice).…”

Section: Methods Of Classification Of Weather Typementioning

confidence: 99%

Weather types accompanying very high pressure in Krakow in the period 1901–2000

Bielec-Bąkowska

Piotrowicz

2010

Intl Journal of Climatology

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ABSTRACT:The paper presents a classification of weather types observed in Krakow during the 20th century on days with particularly strong highs. The classification was based on daily values of a number of weather elements recorded at Krakow's Historic Weather Station during the period 1901-2000. Days with very high pressure were defined as those with an air pressure at 12 UTC equal to or greater than the 99th percentile of all the cases analysed (≥1037.5 hPa). A slightly modified version of a classification developed by Woś (1999) was used to determine weather types on each of the days identified. Very high pressure was found to have occurred solely during the cold half of the year (October-March). It was mostly accompanied by fairly frosty (9---) or moderately frosty (8---) weather types; subtype: sunny or with little cloud amount and very sunny (-02-) and very cloudy, without sunshine or with little sunshine (-20-); and weather class: without fog (---0). No significant annual or seasonal trends were found in the occurrence of days with very high pressure or in the various weather types.

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Spatial differentiation of air temperature in Poland using circulation types and GIS

Ustrnul

2006

Intl Journal of Climatology

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This paper is devoted to the synoptic-climatic analysis with the application of circulation types and Geographic Information Systems (GIS). Construction of daily climatic air temperature maps for the Polish territory was the main aim of the work. Analysis was based on the mean daily temperature data from all synoptic and some climatological stations (73 stations totally) for the 50-year period of 1951-2000. The synoptic-climatic analysis was done using a well known circulation calendar developed by the German Meteorological Service 'Grosswetterlagen'. Residual kriging was chosen for the map constructions. Several geographic parameters, including elevation, latitude, longitude, and distance to the Baltic coast, were used as predictor variables for air temperature. However, the particular circulation type was the crucial predictor. Maps were created for all months for the Grosswetterlagen circulation types, which occurred more than 30 times during 1951-2000. Special attention was paid to the extreme thermal months of January and July. Maps constructed in the way described confirmed that application of circulation types was quite a good tool for improving accuracy of thermal daily maps. Accuracy was much higher for most of the maps constructed for particular circulation types than for the maps created without application of circulation types. There was only one exception: non-advective anticyclonic types during winter time. Then, relatively large variability of the temperature can be observed in the concave landforms and the constructed maps have only approximate meaning.

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Circulation background of the atmospheric precipitation in Central Europe (based on the Polish example)

Cited by 33 publications

References 0 publications

Spatio-temporal changes in atmospheric precipitation over south-western Poland between the periods 1891–1930 and 1981–2010

Spatio-temporal changes in atmospheric precipitation over south-western Poland between the periods 1891–1930 and 1981–2010

Weather types accompanying very high pressure in Krakow in the period 1901–2000

Spatial differentiation of air temperature in Poland using circulation types and GIS

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