diplomsko delo
Samo Škrlec (Author), Asta Gregorič (Mentor), Klemen Bergant (Mentor)

Abstract

Vsebnost vodne pare v ozračju je ena pomembnejših meteoroloških spremenljivk pri numeričnem napovedovanju vremena kot tudi dolgoročnem preučevanju podnebja. Tradicionalni načini merjenja zaradi svojih pomanjkljivosti in stroškov obratovanja ne uspejo pokriti izredno heterogene prostorske in časovne porazdelitve vodne pare v ozračju. Z vse hitrejšim razvojem Globalnih navigacijskih satelitskih sistemov (GNSS), med katere sodi tudi Globalni sistem pozicioniranja (GPS), se vedno bolj uveljavlja daljinsko zaznavanje vsebnosti vodne pare v ozračju na podlagi zakasnitev satelitskih signalov GNSS. V ta namen smo v diplomski nalogi na podlagi skoraj dvoletnih meritev GPS z dvema načrtno postavljenima stacionarnima sprejemnikoma na območju Vipavske doline po uveljavljeni metodologiji, računali skupno vsebnost vodne pare v stolpcu ozračja nad postajo GPS in v sloju ozračja znotraj Vipavske doline – od dna do roba Trnovske planote. Rezultate vsebnosti vodne pare v ozračju smo nato analizirali, primerjali in ovrednotili na podlagi izračunane absolutne vlage in drugih meteoroloških podatkov iz bližnjih merilnih postaj, opisov razvoja vremena in fotografij vremenskih razmer na območju Vipavske doline. Ugotovili smo, da lahko prisotnost padavin ter specifične nehomogene porazdelitve vlažnih zračnih mas vplivajo na razlike v absolutni vlagi, določeni na merilnih postajah in povprečni absolutni vlagi v ozračju Vipavske doline, ocenjeni s pomočjo zakasnitve signalov GNSS.

Keywords

daljinsko zaznavanje;meteorologija GNSS;GPS;troposferska zakasnitev;absolutna vlaga;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UNG FZO - Faculty of Environmental Sciences
Publisher: [S. Škrlec]
UDC: 551.5
COBISS: 4788987 Link will open in a new window
Views: 5721
Downloads: 289
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Other data

Secondary language: English
Secondary title: Characteristics of water vapor fluctuations in the atmosphere above Vipava Valley region by the use of GPS
Secondary abstract: Water vapor plays a crucial role in numerical weather prediction and long term climate research. However, due to the limitations and costs associated with contemporary instruments of water vapor estimation, the complex temporal and spatial distribution of water vapor in the atmosphere remains insufficiently covered. With the rapid development of Global Navigation Satellite Systems (GNSS), which include the Global Positioning System (GPS), there is rising interest in the potential of remote sensing of water vapor in the atmosphere based on GNSS signals delays. Therefore, in this bachelor thesis, using a proven methodology, almost two years of continuous GPS data, obtained from two specifically located stationary GPS receivers in the Vipava Valley region were used to calculate water vapor in the atmospheric layer within the Vipava Valley – from the base of the valley to the edge of Trnovski gozd ridge. The results were analysed, compared and evaluated based on water vapor calculated using data from nearby meteorological stations, other meteorological data, descriptions of weather development and photographs of weather conditions in the Vipava Valley region. It was concluded, that the presence of percipitation and conditions with specific nonhomogeneous distrubutions of humid air in the Vipava valley cause differences between absolute humudity obtained from measuring stations and the average absolute humidity within Vipava valley, estimated from GNSS signal delays.
Secondary keywords: remote sensing;GNSS Meteorology;GPS;tropospheric delay;absolute humidity;
URN: URN:SI:UNG
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Novi Gorici, Fak. za znanosti o okolju
Pages: XI, 64 str.
ID: 10837305