HIGH-RESOLUTION ATMOSPHERE-OCEAN CLIMATE MODELLING IN THE ADRIATIC SEA

doctoral thesis

• Title (english): ATMOSFERSKO-OCEANSKO KLIMATSKO MODELIRANJE VISOKE RAZLUČIVOSTI ZA PODRUČJE JADRANSKOGA MORA
• Author: Petra Pranić
• Mentor: Ivica Vilibić (mentor)
• Mentor: Clea Lumina Denamiel (komentor)
• Committee member: Danijel Belušić (predsjednik povjerenstva)
• Committee member: Žarko Kovač (član povjerenstva)
• Committee member: Ivan Güttler (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2023-12-21, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Interdisciplinary Natural Sciences; Marine Science
• Universal decimal classification (UDC): 55 - Geology. Meteorology. Hydrology

Abstract

The Adriatic region is characterized by extremely complex geomorphology and atmospheric and oceanic processes occurring at various temporal and spatial scales. Due to the relatively coarse horizontal resolution, regional climate models are not capable to resolve the coastal morphology of the Adriatic Sea nor reproduce the processes that occur on smaller spatial and shorter temporal scales. High-resolution climate modeling can be used to overcome these challenges and improve our understanding of the complex processes that drive the Adriatic atmospheric and oceanic circulation. Hence, a high-resolution atmosphere-ocean climate model, the Adriatic Sea and Coast (AdriSC), has been developed for the Adriatic and northern Ionian seas. In order to describe the climate properties of the Adriatic, a 31-year-long (1987–2017) climate simulation was carried out with the AdriSC model. In this thesis, the performance of the AdriSC ocean simulation was thoroughly evaluated by comparing the model results with a comprehensive collection of remote sensing and in situ observational data. Furthermore, the results of the AdriSC simulation, the latest reanalysis product for the Mediterranean Sea and a long-time-running Adriatic Sea atmosphere-ocean forecast model used in both hindcast and data assimilation modes were compared in their ability to reproduce the Adriatic dense-water dynamics during the 2014–2015 period. The main advantages and disadvantages of the different modelling approaches were quantified and discussed. Lastly, a climatology of the Adriatic dense-water dynamics was derived from the results of the AdriSC climate simulation by analyzing the thermohaline properties of the Adriatic Sea during the 1987–2017 period.

Abstract (croatian)

Područje Jadrana obilježava vrlo složena geomorfologija te procesi u atmosferi i moru koji se odvijaju na različitim vremenskim i prostornim skalama. Zbog relativno grube horizontalne razlučivosti, regionalni klimatski modeli nisu sposobni razlučiti obalnu morfologiju Jadranskoga mora ni reproducirati procese koji se odvijaju na manjim prostornim i kraćim vremenskim skalama. Za prevladavanje navedenih izazova i poboljšanje razumijevanja složenih procesa koji pokreću jadransku atmosfersku i oceansku cirkulaciju može se koristiti klimatsko modeliranje visoke razlučivosti. S tim ciljem razvijen je atmosfersko-oceanski klimatski model visoke razlučivosti Adriatic Sea and Coast (AdriSC) za područje Jadranskog i sjevernog Jonskog mora. Kako bi se opisala klimatska svojstva Jadrana, izvršena je 31-godišnja (od 1987. do 2017. godine) klimatska simulacija modelom AdriSC. U ovom radu, napravljena je temeljita evaluacija oceanske simulacije modela AdriSC usporedbom rezultata modela s opsežnim skupom podataka daljinskih i in situ mjerenja. Nadalje, rezultati simulacije AdriSC, najnovije reanalize za Sredozemno more i prognostičkog atmosfersko-oceanskog modela za Jadransko more korištenog za simulacije sa i bez asimilacije podataka, uspoređeni su na temelju njihove sposobnosti reproduciranja dinamike guste vode u Jadranu u razdoblju od 2014. do 2015. godine. Kvantificirane su i raspravljene glavne prednosti i nedostaci različitih pristupa numeričkom modeliranju guste vode. Naposljetku, analizom termohalinih svojstava Jadranskoga mora iz rezultata klimatske simulacije AdriSC u razdoblju od 1987. do 2017. godine načinjena je klimatologija dinamike jadranske guste vode.

• Keywords: Adriatic Sea; thermohaline circulation; climate model; high resolution; evaluation; data assimilation; reanalysis; dense water; dense-water climatology
• Keywords (english): Jadransko more; termohalina cirkulacija; klimatski model; evaluacija; visoka razlučivost; asimilacija podataka; reanaliza; gusta voda; klimatologija guste vode
• Language: english
• URN:NBN: urn:nbn:hr:217:621020
• Promotion: 2024
• Project: Number: IP-2016-06-1955; Title: Višegodišnje i dekadne oscilacije Jadranskog mora: opažanja, modeliranje i posljedice; Acronym: ADIOS; Leader: Ivica Vilibić; Jurisdiction: Croatia; Funder: Hrvatska zaklada za znanost; Funding stream: Research Projects
• Study programme: Title: DOCTORAL STUDY OF OCEANOLOGY; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti u području prirodnih znanosti (doktor/doktorica znanosti u području prirodnih znanosti)
• Type of resource: Text
• Extent: 170 str. ; 30 cm
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-01-30 13:38:38