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  • 1
    Online Resource
    Online Resource
    San Diego :Elsevier,
    Keywords: Oceanography. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (586 pages)
    Edition: 1st ed.
    ISBN: 9780128236932
    DDC: 551.46
    Language: English
    Note: Front Cover -- Oceanography of the Mediterranean Sea -- Oceanography of the Mediterranean SeaAn Introductory GuideEdited byKatrin SchroederConsiglio Nazionale delle Ricerche-Istit ... -- Contents -- List of contributors -- About the editors -- 1 - Introduction -- 1.1 The Mediterranean Sea, a "miniature ocean" -- 1.2 Book structure and contents -- 1.3 Learning objectives at a glance -- References -- 2 - Mediterranean Sea evolution and present-day physiography -- 2.1 Origin of the Mediterranean Sea -- 2.1.1 Kinematic and geodynamical overview -- 2.1.2 Messinian salinity crisis: an extraordinary event -- 2.2 Dimensions and seafloor topography -- 2.3 Sedimentation on continental margins -- 2.3.1 Tectonic movements and sedimentation -- 2.3.2 Climate and sedimentation -- 2.4 Concluding remarks -- References -- 3 - Mediterranean climate: past, present and future -- 3.1 General climate and morphological characteristics of the Mediterranean basin -- 3.2 Instrumental observations, satellites, and reanalyses -- 3.3 Climate models and their evolution -- 3.3.1 Components of climate models and model hierarchy -- 3.3.2 Climate modeling international programs -- 3.4 Heat and moisture balance at Mediterranean regional scale and relation to surface climate -- 3.4.1 Heat budget -- 3.4.2 Moisture budget -- 3.5 The atmospheric circulation of the subtropics and mid-latitudes -- 3.5.1 The Mediterranean basin as a transitional region -- 3.5.2 The Mediterranean storm track -- 3.5.3 Remote factors affecting the Mediterranean climate -- 3.6 Evolution of Mediterranean climate -- 3.6.1 Astronomical forcing -- 3.6.2 The formation of the Mediterranean and geophysical forcing of Mediterranean climate -- 3.6.3 The last million years: the glacial cycles -- 3.6.4 The last millennia: the historical period -- 3.6.5 Anthropogenic climate change -- References. , 4 - The forcings of the Mediterranean Sea and the physical properties of its water masses -- 4.1 The forcings of the Mediterranean Sea -- 4.1.1 Exchanges through the strait of Gibraltar -- 4.1.2 Climatological mean surface flux fields -- 4.1.2.1 Wind stress -- 4.1.2.2 Heat flux -- 4.1.2.3 Freshwater flux -- 4.1.3 Temporal variability -- 4.2 The thermohaline properties of the Mediterranean water masses -- 4.2.1 Water masses, water types, and their representation -- 4.2.2 Water mass analysis and the interpretation of the TS diagram -- 4.2.3 Water mass properties and distribution in the Mediterranean Sea -- 4.2.3.1 Atlantic water -- 4.2.3.2 Intermediate water -- 4.2.3.3 Deep water -- 4.3 Other water mass tracers -- References -- 5 - Mediterranean Sea level -- 5.1 General concepts about sea level -- 5.2 Techniques for measuring sea level -- 5.2.1 Tide gauges -- 5.2.2 Satellite altimetry -- 5.2.3 Sea level proxies -- 5.2.4 Supplementary techniques for understanding sea level changes -- 5.3 Past evolution of Mediterranean Sea level -- 5.3.1 Holocene sea-level changes and the role of isostatic-related subsidence -- 5.3.2 Decadal to centennial sea level trends since the late 19th century -- 5.4 Future projections of Mediterranean Sea level -- References -- 6 - Surface wave and sea surface dynamics in the Mediterranean -- 6.1 General concepts about waves, definitions and phenomenology -- 6.2 Tides and seiches -- 6.2.1 Generalities and basic definitions -- 6.2.2 Tides in the Mediterranean Sea -- 6.3 Marine storms and coastal floods in the Mediterranean Sea -- 6.3.1 Storm surges -- 6.3.2 Planetary scale forcing of storm surges -- 6.3.3 Synoptic scale forcing of storm surges -- 6.3.4 Mesoscale forcing of storm surges -- 6.3.5 Prediction of storm surges -- 6.3.6 Coastal floods in future climates -- 6.4 Wind generated waves. , 6.4.1 Generalities and basic definitions -- 6.4.2 Wind and waves regimes in the Mediterranean Sea -- 6.4.3 Waves forecasts in the Mediterranean Sea -- 6.4.4 Past and future evolution of wind-generated waves -- 6.5 Tsunamis -- 6.5.1 Historical events in the Mediterranean Sea -- 6.5.2 Source, propagation and tsunami models -- 6.5.3 Meteotsunamis -- 6.5.4 Early warning systems -- References -- 7 - Dense and deep water formation processes and Mediterranean overturning circulation -- 7.1 General concepts -- 7.2 Dense/deep water characteristics and formation rates -- 7.3 Observations of deep/dense water formation in the Mediterranean Sea -- 7.3.1 Convection and deep water formation in the Gulf of Lion: five decades of observations -- 7.3.2 Deep water formation in the eastern Mediterranean -- 7.3.2.1 The Adriatic Sea as a main contributor to Eastern Mediterranean deep waters -- 7.3.2.2 The Aegean Sea as an intermittent deep water source to the eastern Mediterranean -- 7.3.3 Formation of intermediate water masses -- 7.3.3.1 Levantine intermediate water -- 7.3.3.2 Cretan intermediate water -- 7.3.3.3 Western intermediate water -- 7.3.3.4 Tyrrhenian intermediate water -- 7.3.4 Dense shelf water formation and cascading -- 7.3.4.1 Gulf of Lion -- 7.3.4.2 Adriatic Sea -- 7.4 Theory of dense/deep water formation processes: general concepts -- 7.4.1 Theory of dense/deep water formation in the open ocean -- 7.4.2 Dense water formation on the shelf and their cascading into the deep ocean -- 7.5 Numerical modeling of deep/dense water formation -- 7.5.1 Dense/deep water formation numerical modeling in the open ocean -- 7.5.2 Dense/deep water cascading numerical modeling -- 7.6 The Mediterranean overturning circulation: structure and dynamics -- 7.6.1 Zonal overturning -- 7.6.2 Western Mediterranean overturning -- 7.6.3 Eastern Mediterranean overturning. , 7.6.4 Comparison of the Mediterranean with the North Atlantic overturning -- 7.7 Concluding remarks -- References -- 8 - Fronts, eddies and mesoscale circulation in the Mediterranean Sea -- 8.1 General concepts -- 8.2 Mediterranean Sea mesoscale variability derived from satellite altimetry -- 8.2.1 Mediterranean sea field dependency on the satellite constellation -- 8.2.2 Quantifying spatial and temporal variability -- 8.3 Eddies, fronts and vertical velocity -- 8.3.1 Vertical velocity and fronts in the Mediterranean Sea -- 8.3.2 Eddy detection, tracking and characterisation -- 8.4 Future perspectives -- References -- 9 - Recent changes in the Mediterranean Sea -- 9.1 General concepts about Mediterranean water masses and their circulation -- 9.2 Changes observed in the Eastern Mediterranean water masses -- 9.2.1 Formation of dense waters and the Eastern Mediterranean Transient (EMT) -- 9.2.2 Decadal oscillations of the upper thermohaline circulation in the EMED -- 9.2.3 Post-EMT status in the EMED -- 9.3 Changes observed in the Western Mediterranean water masses -- 9.3.1 The twentieth century: gradual warming and salinification -- 9.3.2 Changes during the 21st century: the Western Mediterranean Transition (WMT) -- 9.4 Long-term trends and climate change -- 9.5 Impact on the Mediterranean-Atlantic system -- 9.5.1 Mediterranean outflow water (MOW) -- 9.5.2 Following the MOW signal: from the strait of Gibraltar to the North Atlantic -- 9.5.3 MOW trends and variability -- References -- 10 - Mediterranean observing and forecasting systems -- 10.1 The emergence of operational oceanography in the Mediterranean Sea -- 10.2 The framework for ocean observing and the essential ocean variables -- 10.3 Observing systems operating in the Mediterranean Sea -- 10.3.1 Satellites. , 10.3.2 In-situ and land-based remote sensing observations: systems and international coordination programs -- 10.3.2.1 Research vessels -- 10.3.2.2 Moorings -- 10.3.2.3 Tide gauges and coastal stations -- 10.3.2.4 Drifters -- 10.3.2.5 Profiling floats -- 10.3.2.6 Gliders -- 10.3.2.7 HF radars -- 10.3.2.8 FerryBox -- 10.3.2.9 Animal tagging -- 10.3.2.10 EuroGOOS and MONGOOS -- 10.3.3 Multi-platform regional and coastal observing systems -- 10.3.3.1 MOOSE -- 10.3.3.2 SOCIB -- 10.3.3.3 POSEIDON -- 10.3.3.4 Other sustained multi-platform observing systems and intensive surveys -- 10.4 Forecasting the Mediterranean Sea -- 10.4.1 General concepts -- 10.4.1.1 Hydrodynamics -- 10.4.1.2 Storm surges and meteotsunamis -- 10.4.1.3 Wind waves -- 10.4.1.4 Biogeochemistry -- 10.4.1.5 Data assimilation as a tool to integrate models and observations -- 10.4.1.6 Reaching coastal scales -- 10.4.1.7 Coupling hydrodynamics, wave, hydrology, and atmospheric components -- 10.4.2 Illustration of some of the Mediterranean regional ocean prediction systems -- 10.4.2.1 Copernicus marine environment monitoring service -- 10.4.2.2 SOCIB -- 10.4.2.3 Poseidon -- 10.4.2.4 Other prediction systems -- 10.5 Data management and distribution -- 10.6 Concluding remarks -- References -- 11 - Mediterranean Sea general biogeochemistry -- 11.1 Dissolved oxygen distribution and ventilation -- 11.1.1 Introduction -- 11.1.2 Measurements of oxygen and models contribution -- 11.1.3 Dissolved oxygen distribution in the Mediterranean Sea -- 11.1.4 Ventilation mechanisms -- 11.1.5 Long term trends: in situ observation and model contribution -- 11.2 Dissolved nutrients: forms, sources, distribution, and dynamics -- 11.2.1 Introduction -- 11.2.2 Nutrient forms and sources -- 11.2.3 Nutrients distribution -- 11.2.4 Impact of the circulation on nutrients and biological dynamics. , 11.2.5 Anomalous N:P ratio.
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  • 2
    Type of Medium: Book
    Pages: xxi, 561 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 9780128236925
    RVK:
    Language: English
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  • 3
    Publication Date: 2021-04-21
    Type: Article , PeerReviewed
    Format: text
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  • 4
    Publication Date: 2023-02-08
    Description: Key Points In Kongsfjorden, an Arctic glacier fjord, freshwater from glacier runoff and ice meltwater decreases phosphate, alkalinity and DOM concentrations Estuarine mixing is the major driver of summer CO2 undersaturation in glacially modified waters and near‐corrosive conditions were observed Future changes will amplify ocean acidification in the inner‐fjord surface waters Abstract A detailed survey of a high Arctic glacier fjord (Kongsfjorden, Svalbard) was carried out in summer 2016, close to the peak of the meltwater season, in order to identify the effects of glacier runoff on nutrient distributions and the carbonate system. Short‐term weather patterns were found to exert a strong influence on freshwater content within the fjord. Freshwater inputs from glacier runoff and ice meltwater averaged (±SD) low nitrate (1.85±0.47 μM; 0.41±0.99 μM), orthophosphate (0.07±0.27 μM; 0.02 ±0.03 μM), dissolved organic carbon (27 ±14 μM in glacier runoff), total alkalinity (708±251 μmol kg‐1; 173±121 μmol kg‐1) and dissolved inorganic carbon (622±108 μmol kg‐1; 41±88 μmol kg‐1), as well as a modest silicate concentration (3.71±0.02 μM; 3.16±5.41 μM). pCO2 showed a non‐conservative behavior across the estuarine salinity gradient with a pronounced under‐saturation in the inner‐fjord, leading to strong CO2 uptake from the atmosphere. The combined effect of freshwater dilution and atmospheric CO2 absorption was the lowering of aragonite saturation state, to values that are known to negatively affect marine calcifiers (ΩAr, 1.07). Glacier discharge was therefore a strong local amplifier of ocean acidification. Future increases in discharge volume and the loss of marine productivity following the retreat of marine‐terminating glaciers inland are both anticipated to further lower ΩAr within inner‐fjord surface waters. This shift may be partially buffered by an increase in the mean freshwater total alkalinity as the fractional importance of iceberg melt to freshwater fjord inputs declines and runoff increases.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
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  • 5
    Publication Date: 2022-01-31
    Description: The Mediterranean community represented in this paper is the result of more than 30 years of EU and nationally funded coordination, which has led to key contributions in science concepts and operational initiatives. Together with the establishment of operational services, the community has coordinated with universities, research centers, research infrastructures and private companies to implement advanced multi-platform and integrated observing and forecasting systems that facilitate the advancement of operational services, scientific achievements and mission-oriented innovation. Thus, the community can respond to societal challenges and stakeholders needs, developing a variety of fit-for-purpose services such as the Copernicus Marine Service. The combination of state-of-the-art observations and forecasting provides new opportunities for downstream services in response to the needs of the heavily populated Mediterranean coastal areas and to climate change. The challenge over the next decade is to sustain ocean observations within the research community, to monitor the variability at small scales, e.g., the mesoscale/submesoscale, to resolve the sub-basin/seasonal and inter-annual variability in the circulation, and thus establish the decadal variability, understand and correct the model-associated biases and to enhance model-data integration and ensemble forecasting for uncertainty estimation. Better knowledge and understanding of the level of Mediterranean variability will enable a subsequent evaluation of the impacts and mitigation of the effect of human activities and climate change on the biodiversity and the ecosystem, which will support environmental assessments and decisions. Further challenges include extending the science-based added-value products into societal relevant downstream services and engaging with communities to build initiatives that will contribute to the 2030 Agenda and more specifically to SDG14 and the UN's Decade of Ocean Science for sustainable development, by this contributing to bridge the science-policy gap. The Mediterranean observing and forecasting capacity was built on the basis of community best practices in monitoring and modeling, and can serve as a basis for the development of an integrated global ocean observing system.
    Type: Article , PeerReviewed
    Format: text
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  • 6
    Publication Date: 2022-01-31
    Description: The OceanGliders program started in 2016 to support active coordination and enhancement of global glider activity. OceanGliders contributes to the international efforts of the Global Ocean Observation System (GOOS) for Climate, Ocean Health, and Operational Services. It brings together marine scientists and engineers operating gliders around the world: (1) to observe the long-term physical, biogeochemical, and biological ocean processes and phenomena that are relevant for societal applications; and, (2) to contribute to the GOOS through real-time and delayed mode data dissemination. The OceanGliders program is distributed across national and regional observing systems and significantly contributes to integrated, multi-scale and multi-platform sampling strategies. OceanGliders shares best practices, requirements, and scientific knowledge needed for glider operations, data collection and analysis. It also monitors global glider activity and supports the dissemination of glider data through regional and global databases, in real-time and delayed modes, facilitating data access to the wider community. OceanGliders currently supports national, regional and global initiatives to maintain and expand the capabilities and application of gliders to meet key global challenges such as improved measurement of ocean boundary currents, water transformation and storm forecast.
    Type: Article , PeerReviewed
    Format: text
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  • 7
    Publication Date: 2022-12-22
    Description: This chapter aims at introducing the reader to general concepts about the main forcings of the Mediterranean Sea, in terms of exchanges through the Strait of Gibraltar, and air-sea exchanges of heat, freshwater, and momentum. These forcings are also responsible for the peculiar characteristics of Mediterranean water masses. Therefore, the chapter continues with giving a general explanation on water mass analysis, and then it describes the properties and vertical and horizontal distributions of the main Mediterranean water masses. To conclude, the reader is introduced to the use of other (biogeochemical, and chemical) tracers of water masses, with a focus on the Mediterranean Sea.
    Type: Book chapter , PeerReviewed
    Format: text
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  • 8
    Publication Date: 2024-01-30
    Description: The Mediterranean Sea has been sampled irregularly by research vessels in the past, mostly by national expeditions in regional waters. To monitor the hydrographic, biogeochemical and circulation changes in the Mediterranean Sea, a systematic repeat oceanographic survey programme called Med-SHIP was recommended by the Mediterranean Science Commission (CIESM) in 2011, as part of the Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP). Med-SHIP consists of zonal and meridional surveys with different frequencies, where comprehensive physical and biogeochemical properties are measured with the highest international standards. The first zonal survey was done in 2011 and repeated in 2018. In addition, a network of meridional (and other key) hydrographic sections were designed: the first cycle of these sections was completed in 2016, with three cruises funded by the EU project EUROFLEETS2. This paper presents the physical and chemical data of the meridional and key transects in the Western and Eastern Mediterranean Sea collected during those cruises.
    Type: Article , PeerReviewed
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  • 9
    Publication Date: 2024-02-07
    Description: The neodymium isotopic composition (εNd) of seawater is one of the most important geochemical tracers to investigate water mass provenance, which can also serve as a proxy to reconstruct past variations in ocean circulation. Nd isotopes have recently also been used to reconstruct past circulation changes in the Mediterranean Sea on different time scales. However, the modern seawater εNd dataset for the Mediterranean Sea, which these reconstructions are based on, is limited and up to now only 160 isotopic measurements are available for the entire basin. The lack of present-day data also limits our understanding of the processes controlling the Nd cycle and Nd isotopic distribution in this semi-enclosed basin. Here we present new εNd data from 24 depth profiles covering all Mediterranean sub-basins, which significantly increases the available dataset in the Mediterranean Sea. The main goal of our study is to better characterize the relationship between the dissolved Nd isotope distributions and major water masses in the Mediterranean Sea and to investigate the impact and relative importance of local non-conservative modifications, which include input of riverine particles and waters, aeolian-derived material and exchange with the sediments at continental margins. This comprehensive εNd dataset reveals a clear εNd – salinity correlation and a zonal and depth gradient with εNd systematically increasing from the western to the eastern Mediterranean basin (average εNd = −8.8 ± 0.8 and −6.7 ± 1 for the entire water column, respectively), reflecting the large-scale basin circulation. We have evaluated the conservative εNd behaviour in the Mediterranean Sea and quantified the non-conservative components of the εNd signatures by applying an Optimum Multiparameter (OMP) analysis and results from the Parametric Optimum Multiparameter (POMP) analysis of Jullion et al. (2017). The results of the present study combined with previously published Nd isotope values indicate that dissolved εNd behaves overall conservatively in the open Mediterranean Sea and show that its water masses are clearly distinguishable by their Nd isotope signature. However, misfits between measured and OMP- and POMP-derived εNd values exist in almost all sub-basins, especially in the eastern Levantine Basin and Alboran Sea at intermediate-deep depths, which can be explained by the influence of detrital lithogenic εNd signatures through interaction with highly radiogenic Nile sourced volcanic fractions and unradiogenic sediments, respectively. The radiogenic signature acquired in the eastern Levantine Basin is carried by the Levantine Intermediate Water and transferred conservatively to the entire Mediterranean at intermediate depths. Our measured εNd values and OMP- and POMP-derived results indicate that non-conservative contributions originating from sediment sources are then propagated by water mass circulation (with distinct preformed εNd) along the Mediterranean Sea through advection and conservative mixing. Mediterranean εNd effectively traces the mixing between the different water masses in this semi-enclosed basin and is a suitable water mass tracer.
    Type: Article , PeerReviewed
    Format: text
    Format: archive
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  • 10
    Publication Date: 2023-01-13
    Description: A detailed survey of a high Arctic fjord (Kongsfjorden, Svalbard),subjected to a large glacier discharge, was carried out from 24 July to 13 August 2016. Field activities addressed the identification ofthe effects of glacier and iceberg melting on the evolution of nutrient, dissolved organic matter and carbonate systems in this coastal marine environment. Complete CTD profiles were collected in 60 marine stations in theinner area of Kongsfjorden, during six oceanographic surveys, by means of CTD downcasts. CTD profiles were acquired with a Seabird 19plus SeaCATprofiler, equipped with a TURNER Cyclops turbidimeter.
    Keywords: Conductivity; CTD, Seabird 19plus; CTD/Rosette; CTD-RO; DATE/TIME; Density, sigma-theta (0); DEPTH, water; ELEVATION; Event label; LATITUDE; LONGITUDE; OCEAN-CERTAIN; Ocean Food-web Patrol – Climate Effects: Reducing Targeted Uncertainties with an Interactive Network; pHinS; pH Tipping Point in Svalbard; Pressure, water; Salinity; Sample code/label; Station label; Survey-1_ITA001; Survey-1_ITA004; Survey-1_ITA008; Survey-1_ITA009bis; Survey-1_ITA019; Survey-2_ITA001; Survey-2_ITA004; Survey-2_ITA006; Survey-2_ITA006bis; Survey-2_ITA008; Survey-2_ITA009; Survey-2_ITA009bis; Survey-2_ITA010; Survey-2_ITA011; Survey-2_ITA014; Survey-2_ITA017; Survey-2_ITA019; Survey-2_PH1; Survey-2_PH4; Survey-2_PH4bis; Survey-2_PH4tris; Survey-3_ITA006BIS; Survey-3_ITA007bis; Survey-3_ITA008; Survey-3_ITA009; Survey-3_ITA009bis; Survey-3_ITA010; Survey-3_ITA010bis; Survey-3_ITA011; Survey-3_ITA017BIS; Survey-3_ITA018BIS; Survey-3_PH10; Survey-3_PH11; Survey-3_PH12; Survey-3_PH4; Survey-3_PH4bis; Survey-3_PH4tris; Survey-4_ITA006BIS; Survey-4_ITA007bis; Survey-4_ITA009bis; Survey-4_ITA010bis; Survey-4_ITA018BIS; Survey-4_ITA018tris; Survey-4_ITA019bis; Survey-4_PH4tris; Survey-5_ITA001; Survey-5_ITA002; Survey-5_ITA004; Survey-5_ITA005; Survey-5_ITA006; Survey-5_ITA008; Survey-5_ITA011; Survey-5_ITA017; Survey-5_ITA019; Survey-5_PH1; Survey-5_PH1bis; Survey-5_PH25; Survey-5_PH26; Survey-6_ITA004; Survey-6_ITA006; Survey-6_ITA008; Survey-6_ITA009; Survey-6_ITA009bis; Survey-6_ITA013; Survey-6_ITA018tris; Survey-6_ITA019; Survey-6_PH1; Survey-6_PH4; Survey-6_PH4bis; Survey-6_PH4tris; Temperature, water; Turbidity (Nephelometric turbidity unit)
    Type: Dataset
    Format: text/tab-separated-values, 73113 data points
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