The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean
B.SC.(HONS)EARTH SYSTEMS The North Atlantic Oscillation (NAO) is an intrinsic atmospheric process in the form of a dipolar pressure oscillation occurring over the North Atlantic Region. Nonetheless, its fluctuation can lead to atmospheric variability across the entire Northern Hemisphere, making it...
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ftunivmalta:oai:www.um.edu.mt:123456789/52206 2023-05-15T17:26:25+02:00 The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean Balzan, Melinda Sue 2019 https://www.um.edu.mt/library/oar/handle/123456789/52206 en eng University of Malta Institute of Earth Systems Balzan , M. S. (2019). The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean (Bachelor’s dissertation). https://www.um.edu.mt/library/oar/handle/123456789/52206 info:eu-repo/semantics/restrictedAccess The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. North Atlantic oscillation -- Case studies Atmospheric pressure -- North Atlantic Ocean Ocean temperature -- North Atlantic Ocean bachelorThesis 2019 ftunivmalta 2021-10-16T18:02:00Z B.SC.(HONS)EARTH SYSTEMS The North Atlantic Oscillation (NAO) is an intrinsic atmospheric process in the form of a dipolar pressure oscillation occurring over the North Atlantic Region. Nonetheless, its fluctuation can lead to atmospheric variability across the entire Northern Hemisphere, making it a prominent point of research in climate studies. This climatic manifestation is connected to several meteooceanic parameters (such as pressure at sea level, wind speed, and temperature at sea surface) on many different spatial and temporal scales. This study thus focuses on the understanding of these interactions by targeting three case studies: a positive North Atlantic Oscillation Index (NAOI) case study (+4; during December 2015), a negative NAOI case study (-5.1; during December 2010) and a control NAOI case study (+0.1; during July 2003). The Jones et al. (1997) methodology was used to calculate the NAOI for the respective time frames and the results show close similarity between graphical representations based on these calculations and those published by NOAA, making the methodology used a simple alternative for such studies. Moreover, raster analysis was used to analyse spatial data for various meteo-oceanic parameters generated by both numerical models and satellite remote sensing. Results show an enhancement of the sea level pressure gradient during December 2015, a weakening of the gradient during December 2010, whilst being in line with the climatological norm during July 2003. Regarding wind speed anomalies at the surface, these were strongly positive during December 2015, whilst being relatively negative during December 2010. Sea surface temperature anomalies were seen both at zerolag and preceding the NAO for both case studies, whilst identifying no pattern for the control case study. Furthermore, a negative relationship between wind speed anomalies and sea surface temperature anomalies have been observed throughout. All in all, this study should add value to the understanding of the complex dynamics between such variables and the NAO itself with the purpose of contributing to enhanced climatic research. N/A Bachelor Thesis North Atlantic North Atlantic oscillation University of Malta: OAR@UM |
institution |
Open Polar |
collection |
University of Malta: OAR@UM |
op_collection_id |
ftunivmalta |
language |
English |
topic |
North Atlantic oscillation -- Case studies Atmospheric pressure -- North Atlantic Ocean Ocean temperature -- North Atlantic Ocean |
spellingShingle |
North Atlantic oscillation -- Case studies Atmospheric pressure -- North Atlantic Ocean Ocean temperature -- North Atlantic Ocean Balzan, Melinda Sue The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean |
topic_facet |
North Atlantic oscillation -- Case studies Atmospheric pressure -- North Atlantic Ocean Ocean temperature -- North Atlantic Ocean |
description |
B.SC.(HONS)EARTH SYSTEMS The North Atlantic Oscillation (NAO) is an intrinsic atmospheric process in the form of a dipolar pressure oscillation occurring over the North Atlantic Region. Nonetheless, its fluctuation can lead to atmospheric variability across the entire Northern Hemisphere, making it a prominent point of research in climate studies. This climatic manifestation is connected to several meteooceanic parameters (such as pressure at sea level, wind speed, and temperature at sea surface) on many different spatial and temporal scales. This study thus focuses on the understanding of these interactions by targeting three case studies: a positive North Atlantic Oscillation Index (NAOI) case study (+4; during December 2015), a negative NAOI case study (-5.1; during December 2010) and a control NAOI case study (+0.1; during July 2003). The Jones et al. (1997) methodology was used to calculate the NAOI for the respective time frames and the results show close similarity between graphical representations based on these calculations and those published by NOAA, making the methodology used a simple alternative for such studies. Moreover, raster analysis was used to analyse spatial data for various meteo-oceanic parameters generated by both numerical models and satellite remote sensing. Results show an enhancement of the sea level pressure gradient during December 2015, a weakening of the gradient during December 2010, whilst being in line with the climatological norm during July 2003. Regarding wind speed anomalies at the surface, these were strongly positive during December 2015, whilst being relatively negative during December 2010. Sea surface temperature anomalies were seen both at zerolag and preceding the NAO for both case studies, whilst identifying no pattern for the control case study. Furthermore, a negative relationship between wind speed anomalies and sea surface temperature anomalies have been observed throughout. All in all, this study should add value to the understanding of the complex dynamics between such variables and the NAO itself with the purpose of contributing to enhanced climatic research. N/A |
format |
Bachelor Thesis |
author |
Balzan, Melinda Sue |
author_facet |
Balzan, Melinda Sue |
author_sort |
Balzan, Melinda Sue |
title |
The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean |
title_short |
The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean |
title_full |
The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean |
title_fullStr |
The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean |
title_full_unstemmed |
The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean |
title_sort |
relationship between the north atlantic oscillation and meteo-oceanic parameters in the north atlantic ocean |
publisher |
University of Malta |
publishDate |
2019 |
url |
https://www.um.edu.mt/library/oar/handle/123456789/52206 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Balzan , M. S. (2019). The relationship between the North Atlantic Oscillation and meteo-oceanic parameters in the North Atlantic Ocean (Bachelor’s dissertation). https://www.um.edu.mt/library/oar/handle/123456789/52206 |
op_rights |
info:eu-repo/semantics/restrictedAccess The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. |
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