National Repository of Grey Literature 15 records found  1 - 10next  jump to record: Search took 0.00 seconds. 
Origin of Atmospheric Aerosol Based on Data with Different Time Resolution at the National Atmospheric Observatory Košetice.
Pokorná, Petra ; Zíková, Naděžda ; Lhotka, Radek ; Vodička, Petr ; Makeš, Otakar ; Mbengue, Saliou ; Holubová Šmejkalová, Adéla ; Schwarz, Jaroslav ; Ondráček, Jakub ; Ždímal, Vladimír
To improve the air quality the underlying causalities must be well understood,particularly when it comes to aspects such as PM concentration, sources and their origin. The aim of this work was to determine air pollution origin at NAOK based on atmospheric aerosol (AA) data of different time resolution measured during intensive summer campaing.
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Five Years of Aerosol Particles Growth Rate Measurements at Four Background Stations in the Czech Republic.
Holubová Šmejkalová, Adéla
In this work we used data on aerosol particle number size distribution to investigate if there are any differences or similarities in the growth rate at four background stations located in different types of environment (urban, industrial, agricultural and suburban).
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ACTRIS - Contribution of the Czech Republic: National and Central Facilities.
Ondráček, Jakub ; Holubová, Adéla ; Komínková, Kateřina ; Vítková, Gabriela ; Schwarz, Jaroslav ; Klánová, J. ; Holoubek, Ivan ; Váňa, M. ; Ždímal, Vladimír
ACTRIS (Aerosols, Clouds and Trace gases Research Infrastructure) is an initiative gathering partners all over Europe concentrating on high-quality observations of different atmospheric processes. ACTRIS aims to provide high quality open access data of aerosols, clouds and trace gases and to create a platform for researchers to combine their efforts in resolving the most important environmental challenges (such as air quality, health, climate change, etc.). It is a logical continuation of 15 years of development funded by both Member States and the European Commission through the Research Infrastructure programme (including EARLINET, EUSAAR, CREATE and Cloudnet). ACTRIS has become an important pan-European research infrastructure in 2016 by being accepted into ESFRI (The European Strategy Forum on Research Infrastructure) Roadmap. Currently the ACTRIS is in the phase of becoming pan-European research infrastructure with its own legal entity and operational structure, being supported by two EU projects (ACTRIS-2 and ACTRIS PPP – Preparatory Phase Project).
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Response of aerosol concentrations to the daily atmospheric boundary layer variability at the national atmospheric observatory Košetice
Holubová Šmejkalová, Adéla ; Zíková, Naděžda ; Ždímal, Vladimír ; Komínková, Kateřina ; Holoubek, Ivan
The atmospheric boundary layer (ABL) is the part of the troposphere directly influenced by the properties of the Earth’s surface. The ABL thickness reaches from hundreds of meters to a few kilometres. The daily cycle of the ABL height is primarily result of interaction between incoming solar radiation and Earth’s surface heat fluxes because a turbulent motion is dominant in this layer. Air pollutants are generally emitted from surface and their measured concentrations are also influenced by dilution of the atmosphere, or ABL thickness. This study is focused on the linkage between the diurnal ABL height evolution and aerosol particle number concentrations.
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Characterization of Equivalent Black carbon (EBC) at a Regional Background Site in Central Europe: Variability and Source Identification.
Mbengue, S. ; Serfozo, N. ; Holubová Šmejkalová, Adéla ; Holoubek, I.
Black carbon (BC) is recognized to play an important role on adverse public health and in the Earth’s climate system (Bond et al., 2013). It is the most efficient light-absorbing aerosol species in the visible spectrum emitted as primary pollutant from a variety of combustion related sources. Although measurements of Equivalent Black Carbon (EBC) with multiple wavelength aethalometer have been used to provide insights regarding the influence of fossil fuel (traffic emissions) and wood smoke in ambient air (Sandradewi et al., 2008, Vaishya et al. 2017), scarce studies have been reported in Eastern Central Europe using real-time EBC measurements.\nThis study focuses on the seasonal, diurnal and weekly trends of EBC at a regional background site in Central Europe during a 5-year measurement. Our aim is to identify the potential sources of EBC, especially the influence from fossil fuel and biomass burning.
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Characterization of equivalent black carbon (ebc) at a regional backgound site in Central Europe: Variability and source identification
Mbengue, Saliou ; Šerfözö, Norbert ; Holubová Šmejkalová, Adéla ; Holoubek, Ivan
Black carbon (BC) is recognized to play an important role on adverse public health and in the Earth’s climate system (Bond et al., 2013). It is the most efficient light-absorbing aerosol species in the visible spectrum emitted as primary pollutant from a variety of combustion related sources. Although measurements of Equivalent Black Carbon (EBC) with multiple wavelength aethalometer have been used to provide insights regarding the influence of fossil fuel (traffic emissions) and wood smoke in ambient air (Sandradewi et al., 2008, Vaishya et al 2017), scarce studies have been reported in Eastern Central Europe using real-time EBC measurements.\nThis study focuses on the seasonal, diurnal and weekly trends of EBC at a regional background site in Central Europe during a 5-year measurement. Our aim is to identify the potential sources of EBC, especially the influence from fossil fuel and biomass burning.
Seasonal, weekly and diurnal variability of elemental and organic carbon at a rural background site in Central Europe, a four years of measurement
Mbengue, Saliou ; Fusek, M. ; Schwarz, Jaroslav ; Vodička, Petr ; Holubová, Adéla ; Holoubek, Ivan
Atmospheric organic (OC) and elemental (EC) carbon play an important role in\natmospheric chemistry, climate change and public health. There have been relatively\nfew studies dealing with EC and OC in rural background sites which are less influenced\nby urban and industrial emissions. Nevertheless, measurements at background areas are\nimportant for understanding the transport and transformation characteristics of\nanthropogenic air pollutants, and their effects on various aspects of regional and global\nenvironment changes. This work is one of the rare studies using a semi-continuous\nmeasurement technique to focus on long-term (4 years) measurements of EC and OC at\nregional background site in Europe. It focuses on the factors or phenomena influencing\nboth diurnal and weekly variability of EC and OC concentrations during various seasons\nat rural background area.
Aerosol light extinction measurements
Múčková, Nikola ; Zíková, Naděžda (advisor) ; Holubová Šmejkalová, Adéla (referee)
This bachelor thesis deals with the basic processing of measured light extinction data, which was measured at seven wavelengths using the aethalometer (AE-31, Magee). Since 2012, the device has been located at the Košetice meteorological station in the Czech Republic, where the measurement has been ongoing and is currently continuing. The measured data from 2013 to 2015 were processed to provide a basis for further research in meteorology and climatology. Basic parameters such as extinction coefficient and other derived characteristics (Angstroem absorption coefficient, Delta-C) are calculated. From the final data the total average values and time dependencies are determined as daily, weekly and yearly cycles. All dependencies are graphically visualized and commented on. During the data processing, it was also found that during period 2013 - 2015 there was a decrease in the average of the concentration of black carbon and that it was the highest in the winter months. Keywords: atmospheric aerosol, light extinction, time series evaluation
Aerosol Particle Formation During Summer Campaign at Rural Background Site Košetice.
Holubová Šmejkalová, Adéla
Based on the SMPS data, the individual days were classified as NPF event, non-event and undefined, according to the method of Dal Maso et al. (2005). In order to obtain daily patterns, PSM data were averaged for all NPF event, and all non-event days. Relations between NPF, daily variability of meteorological elements, and aerosol particles precursor concentrations were evaluated.
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See also: similar author names
4 HOLUBOVÁ, Adéla
2 Holubová, Alena
8 Holubová, Anna
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