Prace Geograficzne, z. 110

Redaktor: Obrębska-Starkel B.
Rok wydania: 2002
Język publikacji: angielski

ISSN 1644-3586

Cena egzemplarza: 9.45 PLN (w tym 5% VAT)

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Autor: Barbara Obrębska-Starkel
Strony: 7-8
Variability of the mean monthly values of air pressure based on the Cracow series of records (1792-2000)
Autorzy: Lars Bärring, Janina Trepińska, Leszek Kowanetz
Strony: 9-24
Summary - read more..
In this paper the course of the monthly values of air pressure in January, April, July and October as well as the mean annual values of air pressure based on the series of barometer records in Cracow in the period for 1792-2000 has been presented. Such a long series requires a commentary. Therefore, a part of the paper deals with the history of measurements and the method of compensating for the lack of data for 1792-1825. The observed fluctuations in the course of the air pressure are explained by the circulation conditions of the climatic trends.
Fluctuations in annual sums of winter cold days and summer warm days with selected Central European stations as examples and their connection to the large scale circulation
Autorzy: Katarzyna Piotrowicz, Peter Domonkos
Strony: 25-46
Summary - read more..
The paper presents the evaluation of the variability in the number of severely cold (tmean<-100C), cold (tmean<-50C), warm (tmeanł200C) and very warm days (tmeanł230C) in the years 1901-1995. The study used the mean diurnal air temperature records from four meteorological stations located in Central Europe: Cracow, Prague, Szeged and Mosonmagyaróvár. It was concluded that the number of cold days and severely cold days considerably decreased in all the analysed stations since the beginning of the study period. The number of warm and very warm days rose in Cracow and Prague, however it decreased in Szeged. The number of days with tmeanł200C in Mosonmagyaróvár did not show a clear tendency to change in the analysed period, while the number of days with tmeanł230C slightly increased. A strong connection between the course of cold and severely cold days and the types of circulation according to the Grosswetterlagen catalogue was determined. Such days took place most often during Central European high (HM), Fennoscandian high (HFA) and Central European ridge (BM). The influence of circulation on the frequency of appearance of days with tmeanł200C and tmeanł230C turned out to be much smaller.
Fluctuations of the precipitation regime under conditions of temperate and oceanic climates with Cracow and Lille as examples
Autorzy: Robert Twardosz, Jenny Dupuy, Cyrille Duchesne
Strony: 47-60
Summary - read more..
The paper discusses the differences and similarities in the variability of the precipitation regime under conditions of temperate and oceanic climates, with the series of precipitation records from Cracow and Lille as examples. The characteristics of the statistical distribution of the precipitation totals, i.e. the means and extreme values and their frequencies, have been compared. The dispersion in the totals has been evaluated. The temporal variability in the occurrence of the month with the highest and the lowest precipitation and in the selected indices of continentality and pluvial oceanity has been presented. A significant similarity in the course of the annual totals has been evidenced. The largest differences have been stated in the annual cycle of precipitation. In Lille the precipitation regime shows a higher stability that results from the oceanic climate. In Cracow the continental type of regime predominates which is determined by a strong concentration of the annual maximum precipitation.
Distribution of air pollution and its microclimatological conditioning with Tarnów city as an example
Autorzy: Jarosław Gabała, Olaf Kühne
Strony: 61-76
Summary - read more..
Tarnów is a medium size industrial centre. The field of pollution immission in the region of Tarnów is controlled mainly by emission from the chemical plant 'Zakłady Azotowe' (Nitrogen Works), and from some smaller plants and transportation emission which are growing in importance. The relative heights within the area of the town in the E-W transect reach ca. 60 m while in the NW-SE transect - 180 m. Anticyclone synoptic situations add up to degradation of the sanitary conditions of the air. However, they can have a positive influence on the distribution of air pollution in the town during the non-heating season. Location of the town at the outlets of the valleys and the occurrence of the urban heat islands, during the periods of air stagnation, leads to the development of nocturnal systems of gravitational winds which can cause a decrease in the concentration of pollution in the centre.
Differentiation of equivalent temperature in a town (with Cracow and Homburg as examples)
Autorzy: Olaf Kühne, Dorota Matuszko
Strony: 77-86
Summary - read more..
The equivalent temperature belongs to the oldest biometeorological indices. It is a significant measure in the studies on the local climate and bioclimate of towns. It is accepted as one of the indicators of the thermal stress to a human body. During 1997-1999 the field experiment of the equivalent temperature in Cracow (Poland) and Homburg (Germany) was carried out. It has been found that this index reflects well the differences between bioclimatic conditions of the downtown and non-urban area. The crucial role in the distribution of the equivalent temperature in Cracow and Homburg is played by the size of the town and a relief conditions in which both towns are located.
Climatic potential of the republic of Moldova, its changes and influence on agricultural production
Autorzy: Tatiana Constantinova, Maria Nedealkova, Mihail Daradur, Valentin Raileanu, Ala Nicolenco
Strony: 87-98
Summary - read more..
The regularities of formation of winter thermal fields have been studied, using modern methods of multidimensional statistical analysis. The factors, which are controlling their spatial differentiation in regional scale in complex relief of Moldova, have been revealed. The temporal variability of winter temperature has been studied and assessment of wintering conditions and its influence upon the cultivation of peach and apricot fruit have been revealed.