1. A GPS and Galileo carrier tracking architecture robust to ionospheric scintillationMarko Vučković, Rodrigo Romero, Melania Susi, Fabio Dovis, Marcus Andreotti, Marcio Aquino, 2014, objavljeni znanstveni prispevek na konferenci Najdeno v: osebi
Ključne besede: ionosferske scintilacije, prilagodljiv Kalmanov filter, GPS signali, Galileo signali
Objavljeno: 22.01.2015; Ogledov: 2301; Prenosov: 15
 Polno besedilo (0,00 KB) |
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4. Študij atmosferskih procesov v Vipavski dolini na podlagi razširjanja aerosolovMarko Vučković, Janja Vaupotič, Griša Močnik, Samo Stanič, Luka Drinovec, Klemen Bergant, Asta Gregorič, Longlong Wang, Maruška Mole, 2016, objavljeni znanstveni prispevek na konferenci Opis: Vipavska dolina je geomorfološko dokaj zaprta, kar po eni strani omogoča pojav močne burje, po drugi strani pa ob stabilnih meteoroloških razmererah ugodne pogoje za kopičenje aerosolov znotraj prizemne mejne plasti. Poznavanje dinamike višinske porazdelitve aerosolov s sočasno uporabo prizemnih meritev omogoča raziskave lokalnih emisij aerosolov, transporta aerosolov na daljše razdalje ter značilnih atmosferskih struktur, ki se pojavijo v različnih vremenskih pogojih. Pri meritvah smo uporabili metode daljinskega zaznavanja z lidarjem, ki omogočajo opazovanje časovnega in prostorskega spreminjanja koncentracij aerosolov, ter točkovne meritve, ki omogočajo njihovo prepoznavanje in določanje njihovih lastnosti. Ugotovili smo, da je mogoče lidarske meritve uporabiti za študij vrste atmosferskih procesov in struktur v zelo različnih vremenskih pogojih. Opazili smo manjše konvekcijske strukture znotraj prizemne mejne plasti in gravitacijske valove nad njo. Meritve vsebnosti in lastnosti aerosolov pri tleh kažejo, da se lahko ob stabilnih atmosferskih pogojih v primerih povečanja lokalnih emisij njihove koncentracije hitro povečajo. Dinamiko in strukturo razširjanja aerosolov znotraj Vipavske doline bomo v prihodnje podrobneje raziskali s sočasnim prostorskim pregledovanjem z metodami daljinskega zaznavanja.
Najdeno v: osebi
Ključne besede: aerosoli, atmosferski procesi, daljinsko zaznavanje, Vipavska dolina
Objavljeno: 25.01.2016; Ogledov: 2671; Prenosov: 9
 Polno besedilo (4,02 MB) |
5. Observations of atmospheric structures in the Vipava valley based on Lidar dataKlemen Bergant, William Eichinger, Samo Stanič, Asta Gregorič, Longlong Wang, Maruška Mole, Marko Vučković, 2016, objavljeni povzetek znanstvenega prispevka na konferenci Najdeno v: osebi
Ključne besede: lidar, atmosferske strukture, vremenske razmere
Objavljeno: 03.05.2016; Ogledov: 1928; Prenosov: 0
Polno besedilo (33,19 KB) |
6. Evolution of the planetary boundary layer in the presence of fog and plumeMaruška Mole, Marko Vučković, Klemen Bergant, Asta Gregorič, Samo Stanič, Longlong Wang, 2016, objavljeni povzetek znanstvenega prispevka na konferenci Najdeno v: osebi
Ključne besede: lidar, vodna para, sipanje, GPS
Objavljeno: 03.05.2016; Ogledov: 2130; Prenosov: 1
Polno besedilo (35,71 KB) |
7. Lidar measurements of Bora wind effects on aerosol loadingMaruška Mole, Longlong Wang, Samo Stanič, Klemen Bergant, William Eichinger, Francisco Ocaña, Benedikt Strajnar, Primož Škraba, Marko Vučković, William Willis, 2017, izvirni znanstveni članek Opis: The Vipava valley in Slovenia is well known for the appearance of strong, gusty North-East Bora winds, which occur as a result of air
flows over an adjacent orographic barrier. There are three revealing wind directions within the valley which were found to give rise to
specific types of atmospheric structures. These structures were investigated using a Mie scattering lidar operating at 1064 nm, which provided high temporal and spatial resolution backscatter data on aerosols, which were used as tracers for atmospheric flows. Wind
properties were monitored at the bottom of the valley and at the rim of the barrier using two ultrasonic anemometers. Twelve time periods between February and April 2015 were selected when lidar data was available. The periods were classified according to the wind speed and direction and investigated in terms of appearance of atmospheric structures. In two periods with strong or moderate Bora, periodic atmospheric structures in the lidar data were observed at heights above the mountain barrier and are believed to be Kelvin–Helmholtz waves, induced by wind shear. No temporal correlation was found between these structures and wind gusts at the ground level. The influence of the wind on the height of the planetary boundary layer was studied as well. In periods with low wind speeds, the vertical evolution of the planetary boundary layer was found to be governed
by solar radiation and clouds. In periods with strong or moderate Bora wind, convection within the planetary boundary layer was found to be much weaker due to strong turbulence close to the ground, which inhibited mixing through the entire layer.
Najdeno v: osebi
Ključne besede: Downslope wind
Lidar observations
Kelvin–Helmholtz waves
Bora
Objavljeno: 06.01.2017; Ogledov: 1844; Prenosov: 0
Polno besedilo (3,02 MB) |
