Mediterranean Sea climatic indices: monitoring long term variability and climate changes

Iona, Athanasia; Θεοδώρου, Α.; Sofianos, Sarantis; Watelet, Sylvain; Troupin, Charles; Beckers, Jean-Marie

doi:10.5194/essd-2018-51

Cited by 5 publications

(9 citation statements)

References 14 publications

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“…Also, results revealed that the highest rate of increase of the MATA linear trends was +0.02°C/yr (100 m level), while all other rates varied between +0.001 and +0.005°C/yr. This range is in agreement with that concluded by Iona et al (2018) for the Levantine Basin.…”

Section: Discussionsupporting

confidence: 93%

“…The Mediterranean is known to play an indirect role in the water formation processes and thermohaline circulation in the North Atlantic with its very saline outflow to the Atlantic through the Strait of Gibraltar (Reid 1979, Lozier et al 1995, Bethoux et al 1998. In recent decades, the Mediterranean Sea has examined rapid change of increase in its temperature and salinity (Rohling and Bryden 1992, Schroeder et al 2017, Iona et al 2018, reflecting the global general warming trend (Levitus et al 2012). During the period between late 1980s and mid-1990s, the circulation pattern the eastern Mediterranean basin practiced a remarkable change from the surface to the deep layers (Iona et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…In recent decades, the Mediterranean Sea has examined rapid change of increase in its temperature and salinity (Rohling and Bryden 1992, Schroeder et al 2017, Iona et al 2018, reflecting the global general warming trend (Levitus et al 2012). During the period between late 1980s and mid-1990s, the circulation pattern the eastern Mediterranean basin practiced a remarkable change from the surface to the deep layers (Iona et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Behaviour of Temperature Variations in Subsurface Layers in the South-Eastern Mediterranean Sea

El-Geziry¹,

Maiyza²,

Kamel³

2020

AJS

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The present work is a qualitative research, which aims at drawing the general behaviour of variations in the subsurface seawater temperatures within three distinctive subsurface layers in the south-eastern Mediterranean region. The work is based on hydrographic data collected over 65 years (1948–2012). The investigated layers are the subsurface, the intermediate and the deep water layers. The general trend of the mean annual temperature anomaly (MATA) was examined using the linear and quadratic regressions. Results revealed that the MATA over the water column in the south-eastern Mediterranean has the same trend, regardless of the place (layer) of investigation. Linearly, all MATA have increasing trends with different rates, with the exception of the 75 m level, which has a decreasing trend following that previously concluded for the surface water in the region. Also, the quadratic approach reflects the same trend of MATA over the water column, with different years of minimum occurrence. These same trends from the surface to deep can be attributed to the vertical convection processes in this region, and to the expanded impact of solar radiation which may reach more than 30 m depth. Keywords: South-eastern Mediterranean Sea, seawater temperature, linear regression, quadratic regression, cyclic trend

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Behaviour of Temperature Variations in Subsurface Layers in the South-Eastern Mediterranean Sea

El-Geziry¹,

Maiyza²,

Kamel³

2020

AJS

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“…In this context, an effort towards the development of climate indices and the improvement of longterm times series by in situ observations is of importance, for both open and coastal areas. Both heat and saline content are a primer (e.g., Iona et al [2018]), but estimates of stratification from the water-column also have to be included to be compared to the observations in the upper 200 m during the recent decades (e.g., Guancheng et al [2020]) and to separate the roles of thermal and saline contents. The Mediterranean Sea is an important zone for attempting projections [Giorgi & Lionello, 2007], as it has been identified as a major 'hotspots' for exhibiting the effects of climate changes Giorgi [2006].…”

Section: Introductionmentioning

confidence: 99%

Long-term variability of the coastal ocean stratification in the Gulf of Naples: Two decades of monitoring the marine ecosystem at the LTER-MC site, between land and open Mediterranean sea

Kokoszka

Roux

Iudicone

et al. 2022

Preprint

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We analyze 20 years (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018)(2019)(2020) of temperature and salinity profiles at the LTER-MC coastal station in the Gulf of Naples, Mediterranean Sea. Surface and bottom layer show increases of temperature (+0.01 and +0.03°C/year, 2005-2019); watercolumns budgets (heat, freshwater) show pseudo-periodic oscillations every 3 to 5 years, and weak linear trends. Seasonal minimum of salinity occurs two months later than the runoff peak, pointing to the importance of horizontal circulation in regulating the inshore-offshore exchanges and the residence time of freshwater contribution. Inter-annual variations of the mixed layer depth (MLD) exhibit a shallowing (-1.27m/year during winter) and a shortened time span of the fully mixed watercolumn. A visible decadal shift in the external forcings suggests an influence of winterly wind stress in 2010-2019, that prevailed over dominant buoyancy fluxes in 2001-2009. Changes are visible in the large-scale indices of the North Atlantic and Western Mediterranean Oscillations and highlight the role of wind direction, offshore or inshore oriented, in disrupting the stratification driven by freshwater runoff. A random forest regression confirms that role and quantifies the MLD drivers importances. This allows for a reliable prediction of the stratification using external variables independent from the in situ observations.

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“…Many publications establishing which are the factors that condition the SSS in the Mediterranean and which impact have for the function of costs of this mode of transport [ 4 , 5 ]; generally, these articles analyse its efficiency and sustainability [ 6 , 7 ]. However, some knowledge on climatology and meteorology is key to understand the case that occupies us; the climatology of the Mediterranean has been amply studied by numerous authors [ 8 – 10 ] and continues being a very present element in the recent academic production [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Statistical Analysis of the Weather Conditions of the Main SSS Routes in the Western Mediterranean for Its Presentation and Use as a Participatory Site Web to Support Learning Processes

Osés¹,

Jariod²

2021

The 1st International Conference on Maritime Education and Development

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In the early years, maritime education had been mainly focused on the vocational training of deck officers on board. However, as the maritime business evolved, a change in the maritime education curriculum started to be necessary. To align maritime programmes with the needs of maritime stakeholders, maritime studies became an interdisciplinary academic field. Today, MET institutions juggle to comply with the Standard Training and Certificate Watch keeping (STCW) Convention and Code. However, it is also important to ensure that core subjects do not fade out under the integration of these new courses. As the emphasis on creating dedicated knowledge arises, students should be encouraged to participate on the researches conducted by their own centres through new participatory forms of web-based communication. This project has its origins in the research carried out by the Nautical Science and Engineering Department (DCEN) of the Barcelona School of Nautical Studies for the optimization of routes in the western Mediterranean. Through the analysis of the weather conditions in the western Mediterranean sailing area and, in particular, the most common adverse weather conditions in the area, a study of the impact of these weather conditions is carried on in the context of sea route optimization and their importance for short-haul transport. The results of the study are presented in participatory web format for dissemination and use as a didactic tool by the students; the routes studied will also be used as practical examples to explain the contents of the course in a clear and concise way. Through computer-supported collaborative learning, students will acquire lifelong skills and they will participate in the activities of their institution.

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Mediterranean Sea climatic indices: monitoring long term variability and climate changes

Cited by 5 publications

References 14 publications

Behaviour of Temperature Variations in Subsurface Layers in the South-Eastern Mediterranean Sea

Behaviour of Temperature Variations in Subsurface Layers in the South-Eastern Mediterranean Sea

Long-term variability of the coastal ocean stratification in the Gulf of Naples: Two decades of monitoring the marine ecosystem at the LTER-MC site, between land and open Mediterranean sea

Statistical Analysis of the Weather Conditions of the Main SSS Routes in the Western Mediterranean for Its Presentation and Use as a Participatory Site Web to Support Learning Processes

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