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EN
WZ index is an aggregated indicator of air pollution, that encompasses the joint impact of various meteorological elements on pollution (sulphur dioxide) concentration level. Following meteorological elements were taken into account: mean daily air temperature, wind speed at the height of 10 m above the ground level at the time 12 UTC, precipitation, atmospheric air pressure and existence of lower inversion layer. The most often the maxima of WZ index correlate in time with appearance of maxima in air pollution in Decembers, Januaries and Februaries.
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tom Vol. 11, No. 2
209--212
EN
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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tom Vol. 13, No. 2
161--167
EN
The following characteristics were elaborated: mean of sulphur dioxide concentration dependently on the kind of air inflow in winter half period, regression equations between sulphur dioxide concentration and meteorological parameters and correlation coefficients of these equations.
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tom Vol. 11, No. 1
305--311
EN
The paper aimed at finding out the relation between SO2 concentration and air temperature in winter months. The connection between air temperature and sulphur dioxide concentration is related to the temperature value. Decrease of air temperature accompanies inerease of SO2 concentration (the air temperature below -5°C). At the air temperature more than -5°C increase of air temperature accompanies inerease of sulphur dioxide concentration.
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tom 16
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nr 2[36]
EN
WZ index is an aggregated indicator of air pollution, that encompasses the joint impact of various meteorological elements on pollution (sulphur dioxide) concentration level. Following meteorological elements were taken into account: mean daily air temperature, wind speed at the height of 10 m above the ground level at the time 12 UTC, precipitation, atmospheric air pressure and existence of lower inversion layer. The most often the maxima of WZ index correlate in time with appearance of maxima in air pollution in Decembers, Januaries and Februaries.
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tom 44
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nr 1
EN
Popularization of automatic methods of measuring meteorological elements and substituting manual methods creates a problem of maintaining homogeneity of measurement series. In such situations it is necessary to conduct measurements simultaneously, i.e. using a method being introduced and a former method. The analysis of measurement series carried out simultaneously enables comparing and relating measurements made by a new apparatus to already existing results. The present paper includes the results of the analysis of differences between daily, monthly and seasonal atmospheric precipitation values coming from a 11-year series of simultaneous measurements with a telepluviometer and the Hellmann rain gauge.
PL
Upowszechnienie automatycznych metod pomiaru elementów meteorologicznych i zastępowanie nimi metod manualnych, stwarza problem zachowania jednorodności serii pomiarowych. W takich sytuacjach konieczne jest prowadzenie równoległych pomiarów tj. wprowadzaną metodą i dotychczas stosowaną. Analiza równolegle wykonanych serii pomiarowych pozwala na porównanie i „dowiązanie” pomiarów nowym przyrządem do już istniejących wyników. W niniejszej pracy zawarto wyniki analizy różnic sum dobowych, miesięcznych i okresowych wysokości opadu atmosferycznego z 11-letniej serii równoczesnych pomiarów telepluwiometrem i deszczomierzem Hellmanna.
EN
This work shows description of the state of air pollution by sulphur dioxide and nitrogen dioxide in different air mass on Ursynów WULS station. There are two main purposes in this work. First purpose is to calculate the value of SO2 and NO2 concentration in station Ursynów WULS in dependence on infl owing air mass. Second purpose is to calculate the relations between concentration of SO2 and NO2 in the air and some basic meteorological elements such as air temperature and relative humidity, wind velocity and rain fall. The studies covered the period of April 2001 to September 2006.
EN
This study is based on a 50-year data series (1964-2013) of total solar radiation (G) from the Kołobrzeg – station that is located on the Polish Baltic Sea coast and is characterised by a very high level of air quality. To find and remove gross errors, quality control checking procedures were applied in this study. Additionally, the homogeneity of the G series in this study has been tested on a monthly basis by using of the Standard Normal Homogeneity Test for single shifts. We found a statistically non-significant decrease in G during the period from 1964 to 2013. The decrease in the 5-year mean total solar radiation is evident from the beginning of the 1980s, with the minimum mean value occurring in the second half of the 1990s, while G slightly increased from the early 2000s. The analysis of seasonal G patterns shows that total solar radiation in summer is the most similar to the annual pattern and only the summer series trend shows a statistically significant decrease in G. We have also found two noticeable tendencies in monthly anomalies of G over the studied decades; they are negative trends in May and August. The shape of the decadal daily G histogram remained unchanged during the analysed decades.
15
Content available remote Charakterystyka zapylenia na Ursynowie-SGGW w 2002 roku
51%
EN
Modern methods allows accurately analysis of quality and quantity of particulate matter suspended in the air. Measurement particulate matter PM10 was done in Ursynów-WAU since January 2002 by the use of dust sampler. Ana ysis of the results shows permissible level D24 was excced 8 times in the period since January to December 2002. Th e most high concentrations was recorded during inflow northen and western air masses.
EN
The Biebrza River valley is the most valuable wetland’s complex in Poland. The biodiversity of endangered plants and animals observed in this region is outstanding. The lower river valley is considered as one of the most natural wetland area in Europe since, only small reach of this valley was drained. The conservation of this valuable object depends also on maintaining of high soil moisture, therefore the knowledge about the water balance dynamic of this ecosystem seems to be crucial. The evaporation process is a common element of both water and heat cycles thus wetland surface heat balance studies will be helpful for modeling of local hydrological conditions. The paper presents the methodology of grassland ecosystem heat balance structure research which have just started at the Biebrza River valley. The automatic measurement system was developed at the Division of Meteorology and Climatology, and it is consisted of net radiometer – net radiation measurement, heat fl ux plates – soil heat fl ux density measurement, 3D sonic anemometer used for direct measurement of sensible heat fl ux (eddy covariance approach). Two thermohygrometers were installed additionally, which allow to estimate the latent heat flux density using the Bowen ratio method.
EN
This study is based on a 50-year data series (1964-2013) of total solar radiation (G) from the Kołobrzeg – station that is located on the Polish Baltic Sea coast and is characterised by a very high level of air quality. To find and remove gross errors, quality control checking procedures were applied in this study. Additionally, the homogeneity of the G series in this study has been tested on a monthly basis by using of the Standard Normal Homogeneity Test for single shifts. We found a statistically non-significant decrease in G during the period from 1964 to 2013. The decrease in the 5-year mean total solar radiation is evident from the beginning of the 1980s, with the minimum mean value occurring in the second half of the 1990s, while G slightly increased from the early 2000s. The analysis of seasonal G patterns shows that total solar radiation in summer is the most similar to the annual pattern and only the summer series trend shows a statistically significant decrease in G. We have also found two noticeable tendencies in monthly anomalies of G over the studied decades; they are negative trends in May and August. The shape of the decadal daily G histogram remained unchanged during the analysed decades.
EN
Understanding the heat balance structure of the surface of a marshy meadow and the dynamics of its changes were the objectives of observations carried out in the valley of the Biebrza River. A simplified eddy covariance system allowed measurements of the density of four main energy balance components: latent (LE) and sensible (S) heat fluxes, soil heat flux (G), and net radiation (Rn). The mean half-hourly values of the net radiation during our observations ranged from -51 W·m⁻² (nighttime) to 309 W·m⁻² (daytime). The amount of available energy was used for evaporation in the first place – the latent heat flux assumed the highest values in the outgoing portion of the heat balance throughout the entire data series. Mean half-hourly values of latent heat varied between -90 W·m⁻² (at 3. p.m.) and 194 W·m⁻² (at 1 a.m.). The values of sensible heat flux density were relatively low and ranged from -16 W·m⁻² to 96 W·m⁻². During the day, the soil heat flux density ranged from 2 W·m⁻² to 36 W·m⁻², and the flux was most often directed from the active surface into the soil profile. At night, it assumed values within the range -24 to -5 W·m⁻².
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