prikaz prve stranice dokumenta The impact of model grid resolution on Gulf Stream dynamics in idealised simulations
  Download
PDF 523.91 KB
undergraduate thesis
The impact of model grid resolution on Gulf Stream dynamics in idealised simulations
2021. urn:nbn:hr:166:569248
Topić, Roko
University of Split
University of Split, Faculty of science
Department of Physics

Cite this document

Topić, R. (2021). The impact of model grid resolution on Gulf Stream dynamics in idealised simulations (Undergraduate thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:166:569248

Topić, Roko. "The impact of model grid resolution on Gulf Stream dynamics in idealised simulations." Undergraduate thesis, University of Split, University of Split, Faculty of science, 2021. https://urn.nsk.hr/urn:nbn:hr:166:569248

Topić, Roko. "The impact of model grid resolution on Gulf Stream dynamics in idealised simulations." Undergraduate thesis, University of Split, University of Split, Faculty of science, 2021. https://urn.nsk.hr/urn:nbn:hr:166:569248

Topić, R. (2021). 'The impact of model grid resolution on Gulf Stream dynamics in idealised simulations', Undergraduate thesis, University of Split, University of Split, Faculty of science, accessed 27 May 2022, https://urn.nsk.hr/urn:nbn:hr:166:569248

Topić R. The impact of model grid resolution on Gulf Stream dynamics in idealised simulations [Undergraduate thesis]. Split: University of Split, University of Split, Faculty of science; 2021 [cited 2022 May 27] Available at: https://urn.nsk.hr/urn:nbn:hr:166:569248

R. Topić, "The impact of model grid resolution on Gulf Stream dynamics in idealised simulations", Undergraduate thesis, University of Split, University of Split, Faculty of science, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:166:569248

Please login to the repository to save this object to your list.
Metadata
TitleThe impact of model grid resolution on Gulf Stream dynamics in idealised simulations
Title (croatian)Utjecaj rezolucije modela na dinamiku Golfske struje u idealiziranim simulacijama
AuthorRoko Topić
MentorJadranka Šepić (mentor)
MentorJoakim Kjellsson https://orcid.org/0000-0002-6405-5276 (pomoć pri izradi, neposredni voditelj)
Committee memberJadranka Šepić (predsjednik povjerenstva)
Committee memberMile Dželalija (član povjerenstva)
Committee memberŽarko Kovač (član povjerenstva)
GranterUniversity of Split
University of Split, Faculty of science
(Department of Physics)
Split
Defense date and country2021-11-24, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Geophysics
Abstract
The Gulf Stream is one of the biggest and geohistorically most important currents in the world ocean. It emerges as a direct product of mechanical and thermodynamic forcing from the atmosphere and the ocean with the effect of planetary rotation having a major influence on the stream’s appearance. Specifically, in this work, the goal will be to compare different simulations of the North Atlantic Ocean using the NEMO ocean model which is based on a set of rules that describe the ocean dynamics - primitive equations. Simulations of an idealised domain, similar to the North Atlantic Ocean, with horizontal resolutions of \(1/2^{°}\), \(1/4^{°}\), \(1/10^{°}\) and \(1/20^{°}\) are used to reveal how the prescribed parameters and the model resolution affect the behavior of major currents. The location and the kinetic energy of the current will be determined leading to sufficing results when using the R20 (\(1/20^{°}\)) model as expected from a higher resolution setup while the low resolution runs will display an underdeveloped gyre, inadequate for practical application. Some interesting eddy-consequential perturbations and oscillations in current behavior will also be detected and discussed in this thesis. It is concluded that the general current behavior can be reliably simulated with a high resolution, simplified ocean model in a limited time-space domain.
Abstract (croatian)
Golfska struja jedna je od najvećih i povijesno-geografski najznačajnijih morskih struja. Nastaje kao posljedica termodinamičkih i mehaničkih procesa u atmosferi i oceanu te pod utjecajem planetarne rotacije poprima svoj konačni oblik. Izmjena topline između sjevernog dijela Atlantskog oceana i nadkrovnog atmosferskog sloja ima poseban značaj za klimatski profil Europe i Sjeverne Amerike. U ovom radu, cilj je usporediti različite simulacije sjevernoatlantskog oceana pomoću NEMO (Nucleus for European Modelling of the Ocean) alata za modeliranje oceana koji slijedi skup jednadžbi koje određuju dinamiku mora - primitivne jednadžbe. Idealizirani model, usporedljiv sa sjevernoatlantskim bazenom, s rezolucijskom preciznošću od \(1/2^{°}\), \(1/4^{°}\), \(1/10^{°}\) and \(1/20^{°}\) je korišten u svrhu predočavanja utjecaja zadanih modelacijskih parametara i odabrane rezolucije na ponašanje morske struje. Analiziranjem kinetičke energije i pozicije osnovnog toka odrediti će se pouzdanost pojedinačnog rezolucijskog modela pri prikazu Golfske struje. R20 simulacija (\(1/20^{°}\)) će se pokazati najuspješnijom dok će niskorezolucijski modeli rezultirati nepouzdanim prikazom energetski nerazvijenog cirkulacijskog toka. Također će se uočiti i posebno opisati zanimljive oscilacije u ponašanju simulirane morske struje kao posljedica vrtložnog gibanja fluida. U zaključku, visokorezolucijski modeli su potvrđeni kao adekvatan alat za simuliranje dinamičkih procesa u oceanu i atmosferi na prostorno i vremensko ograničenim domenama.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:166:569248
Study programmeTitle: Physics
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) fizike (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) fizike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) icon
Created on2021-12-13 08:52:44