Dynamical Studies of the Eastern Mediterranean Circulation

Golnaraghi, Maryam; Robinson, Allan R.

doi:10.1007/978-94-011-0870-6_17

Cited by 8 publications

(6 citation statements)

References 9 publications

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“…On the northeastern boundary a coastal current exits from the Cretan Straits and feeds the surface layers of the Adriatic Sea. These well‐known features [e.g., Golnaraghi and Robinson , 1994] are evident in both experiments without any significant differences. For the variability we observe a relatively low and patchy signal in all EKE maps.…”

Section: Model Results: Daily and Monthly Intercomparisonsmentioning

confidence: 74%

“…The area south of Cyprus is almost quiescent in all the fields. The model Asia Minor Current in both cases bifurcates near Crete: there it partly recirculates, feeding the Mid‐Mediterranean Jet, and partly feeding the coastal current in the northeastern Ionian Basin [ Golnaraghi and Robinson , 1994]. Both model Asia Minor Current EKEs underestimate the satellite observations.…”

Section: Model Results: Daily and Monthly Intercomparisonsmentioning

confidence: 99%

“…The LIW is usually observed between 200 and 800 m depth. Deep water is produced at different locations in the Mediterranean Sea: in the Gulf of Lyon (western Mediterranean), in the south Adriatic, in the northeast Levantine basin, and in the Aegean Sea (eastern Mediterranean) [see Golnaraghi and Robinson , 1994; Roether et al , 1995]. Progress in the knowledge of the Mediterranean Sea circulation comes both from recent observational programs and modeling efforts.…”

Section: Introductionmentioning

confidence: 99%

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Role of surface fluxes in ocean general circulation models using satellite sea surface temperature: Validation of and sensitivity to the forcing frequency of the Mediterranean thermohaline circulation

et al. 2002

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[1] In this article we study the effect of high-frequency surface momentum and heat fluxes in the numerical simulation of some key ocean processes of the Mediterranean thermohaline circulation. The lack of synoptic and reliable heat and freshwater flux data sets is bypassed using the relaxation approach both for the salinity and temperature surface fields. We propose a parameterization of the heat fluxes in which the temperature-restoring coefficient depends on wind intensity and regime and in which the use of simuoultaneous satellite daily sea surface temperature (SST) estimates as a restoring field is required. The consistency of the proposed parameterization and of its numerical implementation with the previous oceanic boundary layer studies has been verified trough the analysis of the Saunders' proportionality constant. This parameterization coupling simultaneous surface heat fluxes and wind trough the skin-bulk temperature difference, recovers the high variability of the air-sea exchanges of the extreme events in the Mediterranean Sea. The effect of highfrequency surface momentum and heat fluxes is studied comparing results from two different experiments forced with monthly and daily surface wind and satellite SST data sets. These comparisons show the relevance of high-frequency forcing in the representation of the dynamical processes relative to the intermediate water mass transformation and horizontal advection as well as in the deep water formation in the northwestern Mediterranean Sea.

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Section: Model Results: Daily and Monthly Intercomparisonsmentioning

confidence: 74%

Section: Model Results: Daily and Monthly Intercomparisonsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Role of surface fluxes in ocean general circulation models using satellite sea surface temperature: Validation of and sensitivity to the forcing frequency of the Mediterranean thermohaline circulation

et al. 2002

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“…According to Theocharis et al (1999), Pelops is an anticyclonic deep (>2000 m) feature located southwest of Peloponnese. There is a general agreement that it is forced by the winds (Le Vourch et al, 1992;Golnaraghi and Robinson, 1994;Ayoub et al, 1998). However, it is also considered as an "AIS" meander by Marullo et al (1999a), as a permanent eddy by Robinson et al (1991) and gyre by Theocharis et al (1993Theocharis et al ( , 1999.…”

Section: Studies Of Specific Gyres and Eddies A) Pelopsmentioning

confidence: 97%

The surface circulation in the eastern basin of the Mediterranean Sea

Hamad¹,

Millot²,

Taupier‐Letage³

2006

Sci. Mar.

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“…North of this current, the Pelops Eddy (or Pelops Gyre) and the Western Cretan Eddy (Mkhinini et al, 2014) are represented. The CPSC then goes northward to become the Mid-Mediterranean Jet (MMJ, Golnaraghi and Robinson 1994) to form the Mersa Matruh gyre. The Southern Levantine current (SLC) follows the African coastline, bordering the Shikmona gyre in the eastern part of the basin and going northward around Cyprus to become the Asia Minor Current.…”

Section: Currentsmentioning

confidence: 99%

A High Resolution Reanalysis for the Mediterranean Sea

et al. 2021

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In order to be able to forecast the weather and estimate future climate changes in the ocean, it is crucial to understand the past and the mechanisms responsible for the ocean variability. This is particularly true in a complex area such as the Mediterranean Sea with diverse dynamics like deep convection and overturning circulation. To this end, effective tools are ocean reanalyses or reconstructions of the past ocean state. Here we present a new physical reanalysis of the Mediterranean Sea at high resolution, developed in the Copernicus Marine Environment Monitoring Service (CMEMS) framework. The hydrodynamic model is based on the Nucleus for European Modelling of the Ocean (NEMO) combined with a variational data assimilation scheme (OceanVar). The model has a horizontal resolution of 1/24° and 141 unevenly distributed vertical z* levels. It provides daily and monthly temperature, salinity, current, sea level and mixed layer depth as well as hourly fields for surface velocities and sea level. ECMWF ERA-5 atmospheric fields force the model and daily boundary conditions in the Atlantic are taken from a global reanalysis. The reanalysis covers the 33 years from 1987 to 2019. Initialized from SeaDataNet climatology in January 1985, it reaches a nominal state after a 2-years spin-up. In-situ data from CTD, ARGO floats and XBT are assimilated into the model in combination with satellite altimetry observations. This reanalysis has been validated and assessed through comparison to in-situ and satellite observations as well as literature climatologies. The results show an overall improvement of the comparison with observations and a better representation of the main dynamics of the region compared to a previous, lower resolution (1/16°), reanalysis. Temperature and salinity RMSD are decreased by respectively 14 and 18%. The salinity biases at depth of the previous version are corrected. Climate signals show continuous increase of the temperature and salinity, confirming estimates from observations and other reanalysis. The new reanalysis will allow the study of physical processes at multi-scales, from the large scale to the transient small mesoscale structures and the selection of climate indicators for the basin.

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Dynamical Studies of the Eastern Mediterranean Circulation

Cited by 8 publications

References 9 publications

Role of surface fluxes in ocean general circulation models using satellite sea surface temperature: Validation of and sensitivity to the forcing frequency of the Mediterranean thermohaline circulation

Role of surface fluxes in ocean general circulation models using satellite sea surface temperature: Validation of and sensitivity to the forcing frequency of the Mediterranean thermohaline circulation

The surface circulation in the eastern basin of the Mediterranean Sea

A High Resolution Reanalysis for the Mediterranean Sea

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