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Mean duration of heat balance components during autumn nights with advection-radiation and radiation weather in years 1994-1999 were stated on the basis of data observed in meteorological station Ursynów-WAU. Mean fluxes of heat balance components and values of components ratios are presented in tables.
This report presents the influence of the erosion process below the Jeziorsko reservoir on changes in Warta river bed. It contains changes of grain-size in years and sections below the Jeziorsko dam, changes of bottom level in the Warta river reached between the sill No 2 and staff-gauge Uniejów in the years 1989-2001, water level in the Warta river reached between the sill No 2 and staff-gauge Uniejów...
The main aim of the present study is to compare a wide set of methods for estimation solute concentrations in river outflow, both statistical parameters of population and instant values. The reference data set consist two years of daily measurements from two catchments: lowland and mountainous. Each data set was modified to simulate seven series of measurements with weekly intervals. This allows to...
The paper presents analysis of introductory data concerning acidity and electrolytic conductivity of precipitations from VII 2001 to VI 2002. During observation period, on the area of Ursynów the most frequent were precipitations with very high acidity and outside Warsaw with moderate acidity. There were no precipitations with very low acidity. Over 80% of precipitations outside Warsaw and over 50%...
Spatial planning is one of the most important tools to implement principles of sustainable development. The ecophysiographic study is a new and potentially significant element of the Polish spatial planning system introduced in the lst of January 2001. The main role of the study is to give a planner wide environmental background for works on spatial management plans. The article presents principles,...
The paper presents of natural causes changes of the Europe’s and Poland’s climate on the base of the meteorological data and chronicles (Długosz’s, capiturals, municipals etc.). It is difficult to distinguish antropogenic climatic changes from the natural ones. The climatological and astronomical feorecasts are the only forecasts regarding changes of the Eart’s climate in the 21st century.
The objective of the research project was the initial development of selected plant species useful for stabilising the surface ash dump. In the experiments, the effect of ash from the Termoelectric Power Plant „Siekierki” on the germination and growth of grass species was studied.
On the basis of eight recorded rainfall-runoff-suspended sediment events in a small, agricultural catchment of the Zagożdżonka river, a ratio of runoff lag time (Lag) and lag time of sediment flow (Lags) was analysed. The first Lag time of them is defined as the elapsed time between the occurrence of centroid of eflective rainfall and the storm runoff hydrographs. The last one is defined as the elapsed...
The primary sources of NOx in Ursynów are motor wehicles. The highest polution levels and the inereasing trends are observed with high and inereasing car traffic, during the whole day (Fig. 2), weekday and Sunday (Fig. 3). The maximum 1-hours concentration in 2001 accounted for 50% of air quality standard.
Analysis variable concentration dissolve and suspended materiał madę for three flow to rise. There flows were on different season and dynamics. In the cool half-year during to rise out is frorn 1.8 to 3.8 ntore times materiał than during warm half-year. In the hydrological years 1999-2000 during to rise the Wieprz River in Guciów out almost half brash.
The paper aimed at finding out relation between SO2 concentration and meteorological elements in summer months. The results of stepwise multiple regression show, that sulphur dioxide concentration is mostly dependent on the air humidity and wind velocity. In summer months decrease of SO2 concentration accompanies increase of air humidity and wind velocity.
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