On the interpretation of the steric and mass components of sea level variability: The case of the Mediterranean basin

Jordà, Gabriel; Gomis, Damià

doi:10.1002/jgrc.20060

Cited by 45 publications

(38 citation statements)

References 47 publications

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“…The ocean By comparison, the reproduction of salinity seems to be quite problematic both in terms of interannual variability and long-term trends, also probably due to deficiencies in the observation sampling. In fact, the number, spatiotemporal coverage, and quality of salinity in situ observations is worse than for temperature, leading to sampling errors when producing the gridded products (Rixen et al 2005;Jordà and Gomis 2013;Llasses et al 2015).…”

Section: Illustr Ative Ex Amples Of Med -Cordex Scientific Achievementsmentioning

confidence: 99%

Med-CORDEX Initiative for Mediterranean Climate Studies

Ruti

Somot

Giorgi

et al. 2016

Bulletin of the American Meteorological Society

275

242

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The Mediterranean is expected to be one of the most prominent and vulnerable climate change “hotspots” of the twenty-first century, and the physical mechanisms underlying this finding are still not clear. Furthermore, complex interactions and feedbacks involving ocean–atmosphere–land–biogeochemical processes play a prominent role in modulating the climate and environment of the Mediterranean region on a range of spatial and temporal scales. Therefore, it is critical to provide robust climate change information for use in vulnerability–impact–adaptation assessment studies considering the Mediterranean as a fully coupled environmental system. The Mediterranean Coordinated Regional Downscaling Experiment (Med-CORDEX) initiative aims at coordinating the Mediterranean climate modeling community toward the development of fully coupled regional climate simulations, improving all relevant components of the system from atmosphere and ocean dynamics to land surface, hydrology, and biogeochemical processes. The primary goals of Med-CORDEX are to improve understanding of past climate variability and trends and to provide more accurate and reliable future projections, assessing in a quantitative and robust way the added value of using high-resolution and coupled regional climate models. The coordination activities and the scientific outcomes of Med-CORDEX can produce an important framework to foster the development of regional Earth system models in several key regions worldwide.

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Section: Illustr Ative Ex Amples Of Med -Cordex Scientific Achievementsmentioning

confidence: 99%

Med-CORDEX Initiative for Mediterranean Climate Studies

Ruti

Somot

Giorgi

et al. 2016

Bulletin of the American Meteorological Society

275

242

View full text Add to dashboard Cite

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“…Both products differ in the details of the mapping algorithm and the quality control applied to the observations. The difference between them can be viewed as a first estimate of the uncertainties linked to the observational products, which cannot be neglected (Jordà and Gomis, 2013;Llasses et al, 2015). Basin integrals of the various products are compared whatever real data are present or not.…”

Section: Integrated Temperature and Salinitymentioning

confidence: 99%

Design and validation of MEDRYS, a Mediterranean Sea reanalysis over the period 1992–2013

Hamon

Beuvier

Somot³

et al. 2016

Ocean Sci.

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Abstract. The French research community in the Mediterranean Sea modeling and the French operational ocean forecasting center Mercator Océan have gathered their skill and expertise in physical oceanography, ocean modeling, atmospheric forcings and data assimilation to carry out a MEDiterranean sea ReanalYsiS (MEDRYS) at high resolution for the period 1992-2013. The ocean model used is NEMOMED12, a Mediterranean configuration of NEMO with a 1/12 • (∼ 7 km) horizontal resolution and 75 vertical z levels with partial steps. At the surface, it is forced by a new atmospheric-forcing data set (ALDERA), coming from a dynamical downscaling of the ERA-Interim atmospheric reanalysis by the regional climate model ALADIN-Climate with a 12 km horizontal and 3 h temporal resolutions. This configuration is used to carry a 34-year hindcast simulation over the period 1979, which is the initial state of the reanalysis in October 1992. MEDRYS uses the existing Mercator Océan data assimilation system SAM2 that is based on a reduced-order Kalman filter with a threedimensional (3-D) multivariate modal decomposition of the forecast error. Altimeter data, satellite sea surface temperature (SST) and temperature and salinity vertical profiles are jointly assimilated. This paper describes the configuration we used to perform MEDRYS. We then validate the skills of the data assimilation system. It is shown that the data assimilation restores a good average temperature and salinity at intermediate layers compared to the hindcast. No particular biases are identified in the bottom layers. However, the reanalysis shows slight positive biases of 0.02 psu and 0.15 • C above 150 m depth. In the validation stage, it is also shown that the assimilation allows one to better reproduce water, heat and salt transports through the Strait of Gibraltar. Finally, the ability of the reanalysis to represent the sea surface high-frequency variability is shown.

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“…Previous investigations on the future sea-level rise across the Mediterranean Sea Tsimplis et al, 2008;Carillo et al, 2012;Jordà and Gomis, 2013) have mainly focused on the modeling of the steric component of sea-level change, which describes the effects of water density variations. At first order, these can be separated into thermosteric and halosteric components, where the first accounts for temperature variations assuming a constant salinity, and the second represents the effect of salinity variations at constant temperature (Jordà and Gomis, 2013).…”

Section: Introductionmentioning

confidence: 99%