Vidmantas Ulevičius
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View article: Design and performance characteristics of a condensation particle counter UF-02proto
Design and performance characteristics of a condensation particle counter UF-02proto Open
In this paper we present a design of a new swirling flow condensation particle counter UF-02proto, which has a continuous sampling flow. The performance and characteristics of the instrument were investigated. We studied experimentally the…
View article: Estimation of Carbonaceous Aerosol Sources under Extremely Cold Weather Conditions in an Urban Environment
Estimation of Carbonaceous Aerosol Sources under Extremely Cold Weather Conditions in an Urban Environment Open
The present study investigated the characteristics of carbonaceous species in an urban background site. Real-time measurements of inorganic (sulfate, nitrate, ammonium, chloride, and black carbon [BC]) and organic submicron aerosols (OA) w…
View article: Application of Acoustic Agglomeration Technology to Improve the Removal of Submicron Particles from Vehicle Exhaust
Application of Acoustic Agglomeration Technology to Improve the Removal of Submicron Particles from Vehicle Exhaust Open
The natural processes of interactions between aerosol particles in the ambient air through which they agglomerate is a vast area of chamber research and are inherent to many industries and are often inter-connected with transport engineeri…
View article: Global Alliance against Chronic Respiratory Diseases demonstration project: aerosol pollution and its seasonal peculiarities in primary schools of Vilnius
Global Alliance against Chronic Respiratory Diseases demonstration project: aerosol pollution and its seasonal peculiarities in primary schools of Vilnius Open
Background The growing public health concern caused by non-communicable diseases in urban surroundings cannot be solved by health care alone; therefore a multidisciplinary approach is mandatory. This study aimed to evaluate the airborne ae…
View article: Source Related Light Scattering and Absorption by Aerosol in Lithuania
Source Related Light Scattering and Absorption by Aerosol in Lithuania Open
View article: Abiotic stress impact on aerosol mass spectra over a forest site in Lithuania
Abiotic stress impact on aerosol mass spectra over a forest site in Lithuania Open
View article: Abiotic stress impact on aerosol mass spectra over a forest site in Lithuania
Abiotic stress impact on aerosol mass spectra over a forest site in Lithuania Open
Volatile organic compounds (VOCs) emitted by trees in response to abiotic stress evoke high levels of secondary organic aerosol (SOA) compounds. Few techniques exist to provide chemically-resolved submicron (PM 1 ) particle mass concentrat…
View article: Spatial Pattern of Climate Change Effects on Lithuanian Forestry
Spatial Pattern of Climate Change Effects on Lithuanian Forestry Open
Research Highlights: Validating modelling approach which combines global framework conditions in the form of climate and policy scenarios with the use of forest decision support system to assess climate change impacts on the sustainability…
View article: Responses of species-specific sap flux, transpiration and water use efficiency of pine, spruce and birch trees to temporarily moderate dry periods in mixed forests at a dry and wet forest site in the hemi-boreal zone
Responses of species-specific sap flux, transpiration and water use efficiency of pine, spruce and birch trees to temporarily moderate dry periods in mixed forests at a dry and wet forest site in the hemi-boreal zone Open
Predicted climate changings can affect hemi-boreal forests especially for soil conditions with low water-holding capacity and susceptibility to soil water deficits. In our study, species-specific sap flux, transpiration and water use effic…
View article: Comparative analyses of gas exchange characteristics and chlorophyll fluorescence of three dominant tree species during the vegetation season in hemi-boreal zone, Lithuania
Comparative analyses of gas exchange characteristics and chlorophyll fluorescence of three dominant tree species during the vegetation season in hemi-boreal zone, Lithuania Open
Current climate scenarios predict rising air temperature along with increasing frequency and intensity of summer drought in the Central and Eastern Europe. Severe drought episodes affect physiological processes in trees such as transpirati…
View article: Aerosol particle formation in the Lithuanian hemi-boreal forest
Aerosol particle formation in the Lithuanian hemi-boreal forest Open
Aerosol particle observations are needed to determine the conditions of particle formation and growth in different environments. This research focuses on new particle formation (NPF) events in the hemi-boreal forest environment at the Aukš…
View article: Global analysis of continental boundary layer new particle formation based on long-term measurements
Global analysis of continental boundary layer new particle formation based on long-term measurements Open
Atmospheric new particle formation (NPF) is an important phenomenon in terms of global particle number concentrations. Here we investigated the frequency of NPF, formation rates of 10 nm particles, and growth rates in the size range of 10–…
View article: Global analysis of continental boundary layer new particle formation based on long-term measureme
Global analysis of continental boundary layer new particle formation based on long-term measureme Open
<p>Atmospheric new particle formation (NPF) is an<br>\nimportant phenomenon in terms of global particle number<br>\nconcentrations. Here we investigated the frequency of NPF,<br>\nformation rates of 10 nm particles,…
View article: Relationship between the Optical Properties and Chemical Composition of Urban Aerosol Particles in Lithuania
Relationship between the Optical Properties and Chemical Composition of Urban Aerosol Particles in Lithuania Open
In situ investigation results of aerosol optical properties (absorption and scattering) and chemical composition at an urban background site in Lithuania (Vilnius) are presented. Investigation was performed in May-June 2017 using an aeroso…
View article: Integrated impact of sulphur and nitrogen deposition and ozone on forest ecosystems in Lithuania, 1995–2015; pp. 315–324
Integrated impact of sulphur and nitrogen deposition and ozone on forest ecosystems in Lithuania, 1995–2015; pp. 315–324 Open
The present study considers temporal variability in concentrations of the throughfall fluxes and bulk fluxes of sulphate, nitrate, and ammonium in precipitation in Lithuania evaluated employing a non-parametric Mann-Kendall test along with…
View article: A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites
A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites Open
<p>This paper presents the light-scattering properties<br>\nof atmospheric aerosol particles measured over the<br>\npast decade at 28 ACTRIS observatories, which are located<br>\nmainly in Europe. The data include p…
View article: A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites
A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites Open
This paper presents the light-scattering properties of atmospheric aerosol particles measured over the past decade at 28 ACTRIS observatories, which are located mainly in Europe. The data include particle light scattering (σsp) and hemisph…
View article: Sources and atmospheric processing of size segregated aerosol particles revealed by stable carbon isotope ratios and chemical speciation
Sources and atmospheric processing of size segregated aerosol particles revealed by stable carbon isotope ratios and chemical speciation Open
View article: Global analysis of continental boundary layer new particle formation based on long-term measurements
Global analysis of continental boundary layer new particle formation based on long-term measurements Open
Atmospheric new particle formation (NPF) is an important phenomenon in terms of the global particle number concentrations. Here we investigated the frequency of NPF, formation rates of 10 nm particles and growth rates in the size range of …
View article: Supplementary material to "A European aerosol phenomenology-6: Scattering properties of atmospheric aerosolparticles from 28 ACTRIS sites"
Supplementary material to "A European aerosol phenomenology-6: Scattering properties of atmospheric aerosolparticles from 28 ACTRIS sites" Open
Nephelometer data correction Observatory correction who method note DEM yes data provider Müller
View article: A European aerosol phenomenology-6: Scattering properties of atmospheric aerosolparticles from 28 ACTRIS sites
A European aerosol phenomenology-6: Scattering properties of atmospheric aerosolparticles from 28 ACTRIS sites Open
This paper presents the light scattering properties of atmospheric aerosol particles measured over the past decade at 28 ACTRIS observatories, located mainly in Europe. The data include particle light scattering (σsp) and hemispheric backs…
View article: Argon offline-AMS source apportionment of organic aerosol over yearly cycles for an urban, rural, and marine site in northern Europe
Argon offline-AMS source apportionment of organic aerosol over yearly cycles for an urban, rural, and marine site in northern Europe Open
The widespread use of Aerodyne aerosol mass spectrometers (AMS) has greatly improved real-time organic aerosol (OA) monitoring, providing mass spectra that contain sufficient information for source apportionment. However, AMS field deploym…
View article: A European aerosol phenomenology-6: Scattering properties of atmospheric aerosol particles from 28 ACTRIS sites [Discussion paper]
A European aerosol phenomenology-6: Scattering properties of atmospheric aerosol particles from 28 ACTRIS sites [Discussion paper] Open
This investigation presents the variability of near-surface in-situ aerosol particle light scattering measurements obtained over the past decade at 28 measuring atmospheric observatories which are part of the ACTRIS Research Infrastructure…
View article: Spatial Distribution of Carbonaceous Aerosol in the Southeastern Baltic Sea Region (Event of Grass Fires)
Spatial Distribution of Carbonaceous Aerosol in the Southeastern Baltic Sea Region (Event of Grass Fires) Open
The aerosol chemical composition in air masses affected by large vegetation fires transported from the Kaliningrad region (Russia) and southeast regions (Belarus and Ukraine) during early spring (March 2014) was characterized at the remote…
View article: Fossil and non-fossil source contributions to atmospheric carbonaceous aerosols during extreme spring grassland fires in Eastern Europe
Fossil and non-fossil source contributions to atmospheric carbonaceous aerosols during extreme spring grassland fires in Eastern Europe Open
In early spring the Baltic region is frequently affected by high-pollution events due to biomass burning in that area. Here we present a comprehensive study to investigate the impact of biomass/grass burning (BB) on the evolution and compo…
View article: Fossil and non-fossil source contributions to atmospheric carbonaceous aerosols during extreme spring grassland fires in Eastern Europe
Fossil and non-fossil source contributions to atmospheric carbonaceous aerosols during extreme spring grassland fires in Eastern Europe Open
In early spring the Baltic region is frequently affected by high pollution events due to biomass burning in that area. Here we present a comprehensive study to investigate the impact of biomass/grass burning (BB) on the evolution and compo…
View article: Significant increase of aerosol number concentrations in air masses crossing a densely trafficked sea area
Significant increase of aerosol number concentrations in air masses crossing a densely trafficked sea area Open
In this study, we evaluated 10 months data (September 2009 to June 2010) of atmospheric aerosol particle number size distribution at three atmospheric observation stations along the Baltic Sea coast: Vavihill (upwind, Sweden), Uto (upwind,…
View article: Spatial and Temporal Analysis of Organic and Black Carbon Mass Concentrations in Lithuania
Spatial and Temporal Analysis of Organic and Black Carbon Mass Concentrations in Lithuania Open
Both organic carbon (OC) and black carbon (BC) mass concentrations were measured in Lithuania at coastal/marine (Preila), rural (Rūgšteliškis), and urban background (Vilnius) environments have been analyzed to infer the spatial and tempora…
View article: Density assessment method of chemical components in urban submicron aerosol particles
Density assessment method of chemical components in urban submicron aerosol particles Open
During the analysis of aerosol particle density variation in urban environment it was noticed that a Quadrupole Aerosol Mass Spectrometer (Q-AMS) and a Scanning Mobility Particle Sizer (SMPS) indicated the particle diameter differently. Me…
View article: Nocturnal aerosol particle formation in the North China Plain
Nocturnal aerosol particle formation in the North China Plain Open
New particle formation is one of the major sources of atmospheric aerosol particles. Beside daytime nucleation, nocturnal new particle formation was also found in different regions around the world. Compared with daytime nucleation events,…