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Changes in air pollution in the Wałbrzych Industrial District in Poland in 1975–2000The article presents the variation of air pollution in the Wałbrzych Industrial District in 1975 – 2000 at its spatial and temporal aspects. It was found that within 1975 – 1986 air pollution occurred here at a significant level and acceptable standards of dust and gas concentrations were often exceeded here. In the...
A comparison of the radiosonde data and the data set basing on the NCEP-NCAR reanalysisThe purpose of this study is to determine the usefulness of the NCEP-NCAR reanalysis for studying the geopotential height of isobaric levels, air temperature, wind speed and wind direction in the troposphere over the Central Europe. The study compares the values of selected meteorological elements obtained from...
Methods of estimating stream water temperature and air temperature relationships – the Świder River case studyDue to the high significance of water temperature to lotic ecosystems, this paper presents the methods of estimating relationships between water temperature and air temperature on the example of the Świder River. Statistical relationships were determined using logistic and linear regression...
Multiannual variation of thermal specific days in Warsaw (1951 – 2010)The paper focuses on the frequency, annual pattern and long-term variability of thermal specific days in Warsaw during the period 1951 – 2010. The following were distinguished: days with frost ( tmax ≥ 0.0 °C, tmin < 0.0 °C ), cold days ( tmax –0.1 – –10.0°C ), very cold days ( tmax – 10.1– – 20.0 °C ), extremely cold days (...
The development of tourist trails network along the Polish-Czech state border in the Sudetes in the years 1945 – 2013 The paper presents the development of hiking tourist trails network in the vicinity of the Polish-Czechoslovakia border (from the beginning of 1993 the Polish-Czech border) in the Sudetes in the period from 1945 till 2013. A comparison of Polish and Czechoslovak (Czech) trails offer...
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