Spatio-temporal modelling of extreme wave heights in the Mediterranean Sea

Sartini, Ludovica; Besio, Giovanni; Cassola, Federico

doi:10.1016/j.ocemod.2017.07.001

Cited by 32 publications

(21 citation statements)

References 40 publications

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“…The extreme waves climate has a large seasonal signal in both the North Atlantic Ocean and the Mediterranean Sea. Our results also indicate a large intra-annual variability in the central part of the Mediterranean Sea and lower variability in the Alboran and Ligurian sub-basins, in agreement with Sartini et al (2017) wherein they exhibited different degrees of seasonality depending on the main mesoscale meteorological features of the locations analyzed. Concerning the long-term trend of extreme waves, it is predominantly negative, although there are some areas, such as in the center of the North Atlantic Ocean and in the Aegean Sea, where the value of the tendency is positive.…”

Section: Discussionsupporting

confidence: 90%

“…The study of extreme waves at different temporal scales has been extensively addressed in several works Swail, 2001, 2002;Caires et al, 2006;Méndez et al, 2006;Menéndez et al, 2008Menéndez et al, , 2009Izaguirre et al, 2010Izaguirre et al, , 2012Young et al, 2012;Weiss et al, 2014;Sartini et al, 2017). Most of these studies focused on the spatiotemporal distribution of extreme waves rather than on the atmospheric conditions producing them.…”

Section: Introductionmentioning

confidence: 99%

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Extreme waves and climatic patterns of variability in the eastern North Atlantic and Mediterranean basins

Márquez

Orfila

Simarro³

et al. 2020

Ocean Sci.

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Abstract. The spatial and temporal variability of extreme wave climate in the North Atlantic Ocean and the Mediterranean Sea is assessed using a 31-year wave model hindcast. Seasonality accounts for 50 % of the extreme wave height variability in the North Atlantic Ocean and up to 70 % in some areas of the Mediterranean Sea. Once seasonality is filtered out, the North Atlantic Oscillation and the Scandinavian index are the dominant large-scale atmospheric patterns that control the interannual variability of extreme waves during winters in the North Atlantic Ocean; to a lesser extent, the East Atlantic Oscillation also modulates extreme waves in the central part of the basin. In the Mediterranean Sea, the dominant modes are the East Atlantic and East Atlantic–Western Russia modes, which act strongly during their negative phases. A new methodology for analyzing the atmospheric signature associated with extreme waves is proposed. The method obtains the composites of significant wave height (SWH), mean sea level pressure (MSLP), and 10 m height wind velocity (U10) using the instant when specific climatic indices have a stronger correlation with extreme waves.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Extreme waves and climatic patterns of variability in the eastern North Atlantic and Mediterranean basins

Márquez

Orfila

Simarro³

et al. 2020

Ocean Sci.

View full text Add to dashboard Cite

show abstract

“…results also indicate a large intra-annual variability in the central part of the Mediterranean Sea and lower in the Alboran and in the Ligurian sub-basins, in agreement withSartini et al (2017) where they exhibited different degrees of seasonality depending on the main mesoscale meteorological features of the locations analyzed. Concerning long term trend of extreme waves, it is predominantly negative although there are some areas, as in the center of the North Atlantic Ocean or in the Aegean Sea, where the value of the tendency is positive.…”

supporting

confidence: 85%

Extreme waves and climatic patterns of variability in the Eastern North Atlantic and Mediterranean basins

Morales-Márquez¹,

Orfila²,

Simarro³

et al. 2020

Preprint

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Abstract. The spatial and temporal variability of extreme wave climate in the North Atlantic Ocean and the Mediterranean Sea is assessed using a 31-year wave model hindcast. Seasonality accounts for 50 % of the extreme wave height variability in North Atlantic Ocean and up to 70 % in some areas of the Mediterranean Sea. Once seasonality is filtered out, the North Atlantic Oscillation and the Scandinavian Index are the dominant large-scale atmospheric patterns that control the interannual variability of extreme waves during winters in the North Atlantic Ocean; and to a lesser extent, the East Atlantic Oscillation also modulates extreme waves in the central part of the basin. In the Mediterranean Sea, the dominant modes are the East Atlantic and East Atlantic/Western Russia modes which act strongly during their negative phases.

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“…In literature, other methods had been proposed. For instance, monthly maxima of significant wave heights can also be modeled through a generalized extreme value (GEV) probability distribution function (Sartini et al, 2017). The advantage of the POT over the GEV is that more than one peak can be accounted per year in the former, whereas only one peak per year can usually be considered, in the latter.…”

Section: Analysis Of Extreme Wave Heightsmentioning

confidence: 99%

Storm Gloria: Sea State Evolution Based on in situ Measurements and Modeled Data and Its Impact on Extreme Values

et al. 2021

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Storm Gloria, generated on January 17th, 2020 in the Eastern North Atlantic, crossed the Iberian Peninsula and impacted the Western Mediterranean during the following days. The event produced relevant damages on the coast and the infrastructures at the Catalan-Balearic Sea, due to extraordinary wind and wave fields, concomitant with anomalously intense rain and ocean currents. Puertos del Estado (the Spanish holding of harbors) has developed and operates a complex monitoring and forecasting system (PORTUS System), in collaboration with the Spanish Met Office (AEMET). The present work shows how Gloria was correctly forecasted by this system, alerts were properly issued (with special focus to the ports), and the buoys were able to monitor the sea state conditions during the event, measuring several new records of significant wave height and exceptional high mean wave periods. The paper describes, in detail, the dynamic evolution of the atmospheric conditions, and the sea state during the storm. It is by means of the study of both in situ and modeled PORTUS data, in combination with the AEMET weather forecast system results. The analysis also serves to place this storm in a historical context, showing the exceptional nature of the event, and to identify the specific reasons why its impact was particularly severe. The work also demonstrates the relevance of the PORTUS System to warn, in advance, the main Spanish Ports. It prevents accidents that could result in fatal casualties. To do so, the wave forecast warning performance is analyzed, making special focus on the skill score for the different horizons. Furthermore, it is demonstrated how a storm of this nature results in the need of changes on the extreme wave analysis for the area. It impacts all sorts of design activities at the coastline. The paper studies both how this storm fits into existing extreme analysis and how these should be modified in the light of this particular single event. This work is the first of a series of papers to be published on this issue. They analyze, in detail, other aspects of the event, including evolution of sea level and description of coastal damages.

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Spatio-temporal modelling of extreme wave heights in the Mediterranean Sea

Cited by 32 publications

References 40 publications

Extreme waves and climatic patterns of variability in the eastern North Atlantic and Mediterranean basins

Extreme waves and climatic patterns of variability in the eastern North Atlantic and Mediterranean basins

Extreme waves and climatic patterns of variability in the Eastern North Atlantic and Mediterranean basins

Storm Gloria: Sea State Evolution Based on in situ Measurements and Modeled Data and Its Impact on Extreme Values

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