排序方式： 共有79条查询结果，搜索用时 22 毫秒
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Paweł Wiśniewski Mariusz Kistowski 《Geografisk tidskrift / udgivet af Bestyrelsen for Det Kongelige danske geografiske selskab》2013,113(2):123-136
Agriculture is often not included in the baseline greenhouse gas (GHG) emission inventories created for local low carbon economy plans in Poland and other European countries. We therefore estimate the size of the carbon footprint from agricultural sources and indicate the share of agriculture in the total GHG emissions in selected Polish communes (LAU level 2). We propose a solution whereby local government units can estimate their carbon footprint independently and monitor the impact of actions taken to reduce emissions. The value of the carbon footprint from agriculture in the selected communes varies from .5 to 46.5 thousand Mg CO2eq/year, with a mean value of 12.6 thousand Mg CO2eq/year and a standard deviation of 11.4 thousand Mg CO2eq/year. Per capita, these values range from 10 kg CO2eq/year to 8.4 Mg CO2eq/year, with a mean of 1.1 Mg CO2eq/year and a standard deviation of 1.5 Mg CO2eq/year. In all communes, the contribution of agriculture to total emissions is at an average of 14% (values range from .2 to 57.4%). The obtained results confirm the appropriateness of including emissions from the agricultural sector and other related sources in low carbon economy plans. 相似文献
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Mariusz Majdański 《Acta Geophysica》2012,60(1):59-75
A precise 3D model of the crust is necessary to start any tectonic or geodynamic interpretation. It is also essential for
seismic interpretations of structures lying below as well as for correct analysis of shallow structures using reflection seismics.
During the last decades, a number of wide-angle refraction experiments were performed on the territory of central and eastern
Europe (POLONAISE’97, CELEBRATION 2000, SUDETES 2003), resulting in many high quality 2D models. It is an interesting and
complicated transition zone between Precambrian and Palaeozoic Platforms. This paper presents 3D model of the velocity distribution
in the crust and upper mantle interpolated from 2D models of the structure along 33 profiles. The obtained model extends to
a depth of 50 km and accurately describes the main features of the crustal structures of Poland and surrounding areas. Different
interpolation techniques (Kriging, linear) are compared to assure maximum precision. The final model with estimated uncertainty
is an interesting reference of the area for other studies. 相似文献
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Effect of the North Atlantic Oscillation on the Thermal Characteristics of Lakes in Poland 总被引：1，自引：0，他引：1
This paper presents the effect of the North Atlantic Oscillation (NAO) on the thermal characteristics of lakes in Poland. In the analysis, the use was made of monthly air temperatures recorded at fifteen meteorological stations, water temperatures of twelve lakes, and Hurrell’s winter NAO indices. Over the study period (1971–2010), there was a marked increase in the temperatures of both, air and lake waters. Depending on the NAO phase, water temperatures were observed to depart from mean values, being markedly higher than average (even by 1°C) in the positive winter NAO phase. The differences in water temperatures were statistically significant in the winter-spring season. In turn, in the negative NAODJFM phase lake water temperatures in winter and spring were markedly lower than average (in March even by 1.0°C). The unique response of some lakes depends on their morphometric parameters, including their mean depth. 相似文献
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Mariusz P. Dąbrowski 《Astrophysics and Space Science》1996,240(1):123-131
It is shown that growing-entropy stiff-fluid Kantowski-Sachs universes become time-symmetric (if they start with time-asymmetric phase) and isotropize. Isotropization happens without any inflationary era during the evolution since there is no cosmological term here. It seems that this approach is an alternative to inflation since the universe gets bigger and bigger, approaching flatness. 相似文献
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Mariusz Zieliński Krzysztof Fortuniak Włodzimierz Pawlak Mariusz Siedlecki 《Boundary-Layer Meteorology》2017,164(2):281-301
The sensible heat flux (H) is determined using large-aperture scintillometer (LAS) measurements over a city centre for eight different computation scenarios. The scenarios are based on different approaches of the mean rooftop-level \((z_{H})\) estimation for the LAS path. Here, \(z_{H}\) is determined separately for wind directions perpendicular (two zones) and parallel (one zone) to the optical beam to reflect the variation in topography and building height on both sides of the LAS path. Two methods of \(z_{H}\) estimation are analyzed: (1) average building profiles; (2) weighted-average building height within a 250 m radius from points located every 50 m along the optical beam, or the centre of a certain zone (in the case of a wind direction perpendicular to the path). The sensible heat flux is computed separately using the friction velocity determined with the eddy-covariance method and the iterative procedure. The sensitivity of the sensible heat flux and the extent of the scintillometer source area to different computation scenarios are analyzed. Differences reaching up to 7% between heat fluxes computed with different scenarios were found. The mean rooftop-level estimation method has a smaller influence on the sensible heat flux (?4 to 5%) than the area used for the \(z_{H}\) computation (?5 to 7%). For the source-area extent, the discrepancies between respective scenarios reached a similar magnitude. The results demonstrate the value of the approach in which \(z_{H}\) is estimated separately for wind directions parallel and perpendicular to the LAS optical beam. 相似文献
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Apolinarska Karina Pleskot Krzysztof Pełechata Aleksandra Migdałek Michał Pełechaty Mariusz 《Journal of Paleolimnology》2021,66(1):41-53
Journal of Paleolimnology - We conducted year-round, monthly monitoring of the stable isotope composition of DIC and water in hypereutrophic Lake Kierskie, western Poland, along with isotope... 相似文献
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Monika A. Kusiak Kazuhiro Suzuki Daniel J. Dunkley Janusz Lekki Nonna Bakun-Czubarow Mariusz Paszkowski Bartosz Budzy&#x; 《Gondwana Research》2008,14(4):675
Chemical Th–U–total Pb (CHIME) dating of monazite by electron probe microanalyzer (EPMA) and proton microprobe (PIXE) was carried out on felsic granulites from Stary Gierałtów, Poland, which represent part of the Orlica-Śnieżnik Dome in the NE Bohemian Massif. Analyzed monazite is characterized by mosaic zoning rather than simple core-to-rim growth, and strontium contents of up to 750ppm. An isochron age of 347 ± 13Ma represents timing of amphibolite-facies metamorphism, in agreement with previously published estimates. 相似文献
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