291. Science with the Cherenkov Telescope ArrayGašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Marko Zavrtanik, B.S. Acharya, Danilo Zavrtanik, 2017, scientific monograph Keywords: astronomija z gama žarki, ekstremna okolja v vesolju, izvori relativističnih kozmičnih žarkov, nevtronske zvezde, črne luknje, temna snov, gravitacija Published in RUNG: 04.10.2017; Views: 4899; Downloads: 203 Full text (13,37 MB) |
292. Spectral calibration of the fluorescence telescopes of the Pierre Auger ObservatoryAndrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Marko Zavrtanik, A. Aab, Danilo Zavrtanik, 2017, original scientific article Keywords: dušikova fluorescenca, kalibracija, Observatorij Pierre Auger Published in RUNG: 29.09.2017; Views: 3808; Downloads: 0 This document has many files! More... |
293. Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8x10^18 eVA. Aab, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Mohamed Saleh Hassanin Khalil, Samo Stanič, Marta Trini, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2017, original scientific article Keywords: kozmični žarki, anizotropija, dipol, izvori, Observatorij P. Auger Published in RUNG: 25.09.2017; Views: 3903; Downloads: 0 This document has many files! More... |
294. Study of the properties of air flow over orographic barrierMaruška Mole, 2017, doctoral dissertation Abstract: Earth’s atmosphere is a complex system. All weather phenomena take place in its lowest layer, the troposphere, which is strongly influenced by human activities and the underlying surface orography. A good example of the influence the orography has on the behavior of air flows is the appearance of strong north-east downslope wind in Vipava valley, called Bora. Numerical models used to analyze flows in complex terrain need meteorological data both for setting the initial conditions and the verification of modeling results. Obtaining spatial distributions of meteorological observables can be challenging, especially in the case of strong winds, such as Bora, where traditional methods may be inadequate due to prohibitive wind speeds. In most cases, vertical properties of the atmosphere can be obtained using remote sensing techniques. Contrary to vertical profile measurements with traditional methods, remote sensing techniques do not require the measuring device to be placed within the flow and are therefore more appropriate for measurements in severe weather conditions such as strong winds.
The aim of this thesis is a detailed analysis of wind and tropospheric structure properties in and above the Vipava valley in a variety of typical atmospheric conditions, including strong wind events. It employs a combination of high resolution wind and lidar data in addition to standard meteorological measurements.
In Ajdovščina, there are four predominant wind directions, two of them directly connected to Bora. In the case of Bora, periodicity analysis of wind data from Ajdovščina yielded a range of possible wind gust periods between 1 and 7 minutes. The periods were not stable, with the periodogram less noisy for stable wind directions. Wavelike structures were found to be present in the troposphere in half of the investigated cases, regardless of the presence of Bora. In statically stable conditions, gravity waves propagated throughout
the planetary boundary layer (PBL). In the case of Bora, the PBL experienced oscillations with periods between 1 and 2 minutes. A shear layer was present above the PBL, causing Kelvin-Helmholtz waves at its boundaries with periods ranging from 3 to 6 minutes. In some cases, periodic structures were observed above the shear layer as well, which were found to have longer periods than those within the PBL. Keywords: remote sensing, Vipava valley, wind properties, Bora, wind gusts, wind periodicity, tropospheric structures, Kelvin-Helmholtz waves Published in RUNG: 18.09.2017; Views: 6502; Downloads: 199 Full text (45,11 MB) |
295. Long-term investigation of aerosol variability in the boundary layer over Vipava valley based on lidar observations and black carbon measurementsLonglong Wang, Klemen Bergant, Marija Bervida, Luka Drinovec, William Eichinger, Asta Gregorič, Dafina Kikaj, Griša Močnik, Maruška Mole, Janja Vaupotič, Samo Stanič, 2017, published scientific conference contribution abstract Published in RUNG: 21.07.2017; Views: 4954; Downloads: 0 This document has many files! More... |
296. Particle Physics with the Pierre Auger ObservatoryTanguy Pierog, Andrej Filipčič, Samo Stanič, Darko Veberič, Danilo Zavrtanik, Marko Zavrtanik, 2014, published scientific conference contribution Keywords: Pierre Auger Observatory, extensive air showers, hadronic interactions, proton-air inelastic cross-section Published in RUNG: 27.06.2017; Views: 3944; Downloads: 0 This document has many files! More... |
297. Results from the Pierre Auger ObservatoryIvan De Mitri, Andrej Filipčič, Samo Stanič, Darko Veberič, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Pierre Auger Observatory, Ultra High Energy Cosmic Rays (UHECR), UHECR energy spectrum, UHECR mass composition Published in RUNG: 27.06.2017; Views: 4108; Downloads: 0 This document has many files! More... |
298. Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger ObservatoryA. Aab, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2017, original scientific article Keywords: Pierre Auger Observatory, ultra-high energy cosmic rays (UHECR), UHECR anisotropies, angular power spectrum, needlet wavelet analysis Published in RUNG: 23.06.2017; Views: 4106; Downloads: 0 This document has many files! More... |
299. Astroparticles at the High Energy Frontier: Results from the Pierre Auger ObservatoryGonzalo Parente, Andrej Filipčič, Ahmed Saleh, Samo Stanič, Darko Veberič, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, 2014, published scientific conference contribution Keywords: Pierre Auger Observatory, ultra-high energy cosmic rays (UHECR), UHECR energy spectrum, mass composition, anisotropies Published in RUNG: 20.06.2017; Views: 4858; Downloads: 0 This document has many files! More... |
300. Auger HighlightsAntonella Castellina, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2014, published scientific conference contribution Keywords: Pierre Auger Observatory, ultra high energy cosmic rays (UHECR), UHECR hybrid detection technique, UHECR energy spectrum, UHECR mass composition, UHECR arrival directions Published in RUNG: 20.06.2017; Views: 5096; Downloads: 395 Full text (861,47 KB) |