prikaz prve stranice dokumenta Analysis of wind characteristics during Bora events in the southern region of Croatia
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master's thesis
Analysis of wind characteristics during Bora events in the southern region of Croatia
2024. urn:nbn:hr:166:274475
Topić, Roko
University of Split
Faculty of Science
Department of Physics

Cite this document

Topić, R. (2024). Analysis of wind characteristics during Bora events in the southern region of Croatia (Master's thesis). Split: University of Split, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:166:274475

Topić, Roko. "Analysis of wind characteristics during Bora events in the southern region of Croatia." Master's thesis, University of Split, Faculty of Science, 2024. https://urn.nsk.hr/urn:nbn:hr:166:274475

Topić, Roko. "Analysis of wind characteristics during Bora events in the southern region of Croatia." Master's thesis, University of Split, Faculty of Science, 2024. https://urn.nsk.hr/urn:nbn:hr:166:274475

Topić, R. (2024). 'Analysis of wind characteristics during Bora events in the southern region of Croatia', Master's thesis, University of Split, Faculty of Science, accessed 05 April 2025, https://urn.nsk.hr/urn:nbn:hr:166:274475

Topić R. Analysis of wind characteristics during Bora events in the southern region of Croatia [Master's thesis]. Split: University of Split, Faculty of Science; 2024 [cited 2025 April 05] Available at: https://urn.nsk.hr/urn:nbn:hr:166:274475

R. Topić, "Analysis of wind characteristics during Bora events in the southern region of Croatia", Master's thesis, University of Split, Faculty of Science, Split, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:166:274475

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Metadata
TitleAnalysis of wind characteristics during Bora events in the southern region of Croatia
Title (croatian)Analiza karakteristika vjetra za vrijeme epizoda bure na području južne Hrvatske
AuthorRoko Topić
MentorŽarko Kovač (mentor)
Committee memberŽarko Kovač (predsjednik povjerenstva)
Committee memberJadranka Šepić (član povjerenstva)
Committee memberIvana Weber (član povjerenstva)
GranterUniversity of Split
Faculty of Science
(Department of Physics)
Split
Defense date and country2024-04-12, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Geophysics
Abstract
Bora is a northeasterly, gusty wind which blows along the Adriatic coast. It is present during the whole year, with more frequent and more intense bora episodes appearing during wintertime. Bora-prone regions suitable for wind energy harvesting. Bora can be manifested as a hazardous wind affecting structures, transportation and people. It commonly occurs under a few characteristic synoptic settings over Europe. Anticyclonic and cyclonic bora are main types observed along the Adriatic coast. In... More the southern part of Croatia, complex terrain and scarcity of measurements make understanding of Bora dynamical generation challenging. Wind speed and direction measurements were obtained for the location of Pometeno Brdo. Data was obtained for the first period from 2010 to 2011, at 10 and 40 m heights above ground, and a second period from 2018, at 60 and 80 m heights above ground. This data was filtered to distinguish bora wind episodes, lasting longer than 10 hours. Furthermore, Copernicus regional reanalysis for Europe (CERRA) produced wind speed is compared to the observations to evaluate the accuracy of the reanalysis during available bora episodes. Additionally, six Bora case studies are selected for further analysis and Weather prediction and forecast (WRF) model simulation to determine the effects of spatial downscaling on bora wind representation. The study case period selection is made regarding three factors: synoptic setting over southern Croatia, average bora wind speed and data availability at different heights above ground. Jenkinson-Collison automated Lamb Weather Typing Classification scheme is used to determine the synoptic weather patterns over southern Croatia during all available bora episodes. Results show satisfactory reproduction of general wind behavior with CERRA for all heights during moderately strong bora episodes. Wind speed during intense bora episodes is reproduced with poor accuracy. WRF downscaling improves wind speed reproduction on all heights. Less
Abstract (croatian)
Bura je sjeveroistočni vjetar s olujnim udarima koji puše duž jadranske obale. Prisutna je tijekom cijele godine, s tim da su češči i intenzivniji udari bure zimi. Područja sklona buri pogodna su za iskorištavanje energije vjetra. Bura se može manifestirati kao opasan vjetar koji utječe na građevine, prijevoz i ljude. Obično se javlja tijekom nekoliko karakterističnih sinoptičkih situacija nad Europom. Anticiklonalna i ciklonalna bura su najčešči oblici bure koji se pojavljuju duž jadranske... More obale. U južnom dijelu Hrvatske brdovit teren i nedostatak mjerenja predstavljaju izazov za razumijevanje dinamičkog nastanka bure. Za lokaciju Pometeno Brdo dobivena su mjerenja brzine i smjera vjetra. Podaci su dobiveni za prvo razdoblje od 2010. do 2011. godine, na 10 i 40 m visine iznad tla, te drugo razdoblje od 2018. godine, na 60 i 80 m visine iznad tla. Ovi podaci su filtrirani kako bi se ustanovile epizode bure koje traju duže od 10 sati. Nadalje, brzina i smjer vjetra preuzeti od Copernicus regional reanalysis for Europe (CERRA) su uspoređeni s opažanjima kako bi se procijenila točnost reanalize tijekom dostupnih epizoda bure. Također, odabrano je šest slučajeva bure za daljnju analizu i simulaciju putem Weather prediction and forecast (WRF) modela kako bi se odredili učinci poboljšanja prostorne razlučivosti na prikaz bure. Odabir svakog slučaja napravljen je s obzirom na tri čimbenika: sinoptički uvjeti nad južnom Hrvatskom, prosječna brzina bure i dostupnost podataka na različitim visinama iznad tla. Jenkinson-Collisonova automatizirana Lamb Weather Typing Classification shema koristi se za određivanje sinoptičkih vremenskih obrazaca nad južnom Hrvatskom tijekom svih dostupnih epizoda bure. Rezultati pokazuju zadovoljavajuću reprodukciju općeg ponašanja vjetra s CERRA-om za sve visine tijekom umjereno jakih epizoda bure. Brzina vjetra tijekom epizoda intenzivne bure reproducirana je s lošijom točnošću. WRF povećanje prostorne razlučivosti poboljšava reprodukciju brzine vjetra na svim visinama. Less
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:166:274475
Study programmeTitle: Physics; specializations in: specialization in Education, specialization in Astrophysics and Elementary Particle Physics, specialization in Biophysics, specialization in Environmental Physics, specialization in Computational Physics
Course: specialization in Environmental Physics
Study programme type: university
Study level: graduate
Academic / professional title: sveučilišni/a magistar/magistra fizike (sveučilišni/a magistar/magistra fizike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Public notePhysics, specialization in Environmental Physics - studij se izvodi na engleskom jeziku
Created on2024-05-06 08:28:00
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