Comparison of high resolution hydrodynamic model outputs with in-situ Argo profiles in the Ionian Sea

Kassis, Dimitris; Κορρές, Γεράσιμος; Konstantinidou, Anna; Perivoliotis, L.

doi:10.12681/mms.1753

Cited by 6 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the AW and BSW have depicted only a weak presence in the Cretan basin. Especially regarding AW, its absence from the Cretan Sea western boundaries is in agreement with previous studies reporting a general gradual reduction of the AW inflow in the Ionian that reaches a minimum in 2012 (Kassis et al, 2017;Kassis & Korres, 2020). In the following years, only a few profiles present a weak AW signal in the Western Cretan Straits mainly during 2014.…”

Section: Discussionsupporting

confidence: 91%

Recent hydrological status of the Aegean Sea derived from free drifting profilers

Kassis

Κορρές

2021

Medit. Mar. Sci.

View full text Add to dashboard Cite

Being a semi-enclosed basin of the Mediterranean Sea, the Aegean Sea comprises a complex hydrology that plays a significant role in the hydrology of the Eastern Mediterranean Sea. Its interaction with many sub-basins, along with its contribution towards the formation of deep and intermediate water, makes it an ideal case for the study of hydrological changes in transitional areas. Since 2010, the operational monitoring of the basin has been significantly enriched due to the deployment of autonomous free-drifting profilers (Argo floats) under the framework of the newly formed Greek Argo Research Infrastructure activities. In this study the hydrological status of the area is examined for the period 2010 - 2017 using the temperature and salinity profiles acquired from Argo floats that operated in the basin. The profiles are analyzed together with complementary remote sensing and model outputs datasets in order to present the spatio-temporal distribution of the co-existent water masses and shed light on hydrological features and changes that took place throughout the basin in an attempt to reassess its hydrological status during the last decade. The distribution of the physical properties in different sub-regions and their interaction is examined reconstructing a general picture of strong latitudinal gradients in the T-S and σθ fields from the upper layers towards the deeper zones. Interannually, findings indicate changes of the Aegean water masses structure within the water-column. Deep homogenization in the upper layers is recorded mainly during the winter periods of 2011-2012, 2014-2015 and 2016-2017 in the southern, central, and northern parts of the area accordingly. The observed dense water formation events, along with mixing and advection appear to alterate the water column physical properties structure and affect the dynamics of the surface and sub-surface dominant water masses in the Aegean. The results further highlight the valuable information that can be extracted from the operation of free-drifting profilers in enclosed marginal seas similar to the Aegean case.

show abstract

Section: Discussionsupporting

confidence: 91%

Recent hydrological status of the Aegean Sea derived from free drifting profilers

Kassis

Κορρές

2021

Medit. Mar. Sci.

View full text Add to dashboard Cite

show abstract

“…This analysis consists of aspects related to drainage, relief and geology, which contain different environmental dynamics present in a given ecosystem [11].…”

Section: Physical Dynamics and The Influences Of The Environment Builmentioning

confidence: 99%

“…In this regard, the structuring of environmental monitoring programs, carried out through measurements of hydrological, limnological, topographic and cartographic variables, can be assisted through the use of the GIS (Geographic Information System), and a better understanding of spatial characteristics in a determined study area [11,[13][14][15][16]. For that reason, it can be stated that one can contribute to environmental suitability of subbasins [17,18].…”

Section: Physical Dynamics and The Influences Of The Environment Builmentioning

confidence: 99%

Physical Dynamics and the Influences of the Environment Built on Subbasins

Pereira¹,

Neckel²,

Almeida³

et al. 2018

JCEA

View full text Add to dashboard Cite

Abstract:The fields of engineering, architecture and urbanism ought to ponder on constructive changes to be employed in the environment. Environmental vulnerability usually reaches sites with greater abundance of water resources that are exposed to contaminable factors, which usually become residential expansion areas, and often extrapolate city boundaries. The general objective of this study is to assess physical characteristics of the subbasins of the Curtume and Água Preta streams, located in the Paraíba do Sul watershed in the municipality of Pindamonhangaba, in the state of São Paulo (SP), Brazil. The current situation regarding this environment, based on soil type and morphometric and physiographic attributes, is specifically sought to be identified. The results show the morphological and physiographic relationships with the hydrological data that determine the natural pattern of the site, associated with anthropic actions that characterize potentialities and vulnerabilities of the area, thus determining environmental dynamics. The results demonstrate that urban sprawl and residential constructions in subbasin conservation areas should occur in a planned and strategic manner, without advancing to water conservation areas.

show abstract

“…Within the framework of the Mediterranean Argo (MedArgo) project, Greece supports Argo infrastructure and research activities with an increasing number of deployed floats [more information is available in Kassis et al (2014) and at http://www.greekargo.gr], thus improving the description and analysis of the circulation characteristics and thermohaline structure in the Aegean and Ionian Seas (Krokos et al, 2014;Velaoras et al, 2014;Kassis et al, 2015Kassis et al, , 2016Kassis et al, , 2017. In 2010, the Hellenic Centre for Marine Research (HCMR) procured and deployed a float to initiate the Greek Argo program.…”

Section: Introductionmentioning

confidence: 99%

Assessing the impact of Argo floats temperature measurements on the numerical weather prediction forecast skill

Varlas¹,

Katsafados

Κορρές

et al. 2019

Medit. Mar. Sci.

View full text Add to dashboard Cite

The forecast skill of numerical weather prediction (NWP) models relies, among other factors such as the prediction itself and the assimilation scheme, on the accuracy of the observations utilized in the assimilation systems for the production of initial and boundary conditions. One of the most crucial parameters in weather forecasting is the sea surface temperature (SST). In the majority of NWP models, the initial and lower boundary conditions involve gridded (SST) analyses which consist of data obtained by buoys, ships and satellites. The main aim of this study is to integrate Argo temperature measurements in gridded SST analyses and to assess their impact on the forecast skill of a limited area atmospheric model. Argo floats are “state-of-the-art” oceanographic instruments producing high-quality temperature profiles for the ice-free ocean. In this study, Argo temperatures are incorporated into gridded SST fields without applying any smoothing method in order to directly assess the impact of Argo temperatures on numerical weather prediction. Their impact is assessed under intense weather cyclonic conditions at the Mediterranean Sea by performing two sensitivity simulations either incorporating or not Argo temperatures into gridded SST fields used in the generation of the initial and lower boundary conditions. The results indicate that the inclusion of Argo-measured near-surface temperatures in the lower boundary condition modifies the surface heat fluxes, thus affecting mean sea level pressure and precipitation. In particular, an overall improvement of the precipitation forecast skill up to 3% has been demonstrated. Moreover, the incorporation of Argo temperatures affects the simulated track and intensity of the cyclone over the Balkan Peninsula.

show abstract

Comparison of high resolution hydrodynamic model outputs with in-situ Argo profiles in the Ionian Sea

Cited by 6 publications

References 35 publications

Recent hydrological status of the Aegean Sea derived from free drifting profilers

Recent hydrological status of the Aegean Sea derived from free drifting profilers

Physical Dynamics and the Influences of the Environment Built on Subbasins

Assessing the impact of Argo floats temperature measurements on the numerical weather prediction forecast skill

Contact Info

Product

Resources

About