Trabajo presentado en la EGU General Assemby 2013, celebrada del 7 al 12 de abril de 2013 en Viena (Austria)Peer Reviewe

Adani, M. (Mario)

Aparicio-González, A. (Alberto)

Balbín, R. (Rosa)

Barceló, B. (Bàrbara)

López-Jurado, J.L. (José Luis)

Menna, M. (Milena)

Pascual, A. (Ananda)

Poulain, P.M. (Pierre-Marie)

Rio, M.H. (Marie-Helene)

Tintoré, J. (Joaquín)

English

Rio, Marie-Helene

Pascual, Ananda

Poulain, Pierre-Marie

Menna, Milena

Adani, Mario

Balbín, Rosa

Aparicio-González, Alberto

López-Jurado, José Luis

Barceló, Bàrbara

Tintoré, Joaquim

Digital.CSIC

A new Mean Dynamic Topography of the Mediterranean Sea based on model outputs, drifter data, hydrological profiles and altimeter measurements

Tintoré, J. (Joaquim)

Repositorio Institucional Digital del IEO

Geophysical Research AbstractsVol. 15, EGU2013-12693, 2013EGU General Assembly 2013© Author(s) 2013. CC Attribution 3.0 License.A new Mean Dynamic Topography of the Mediterranean Sea based onmodel outputs, drifter data, hydrological profiles and altimetermeasurementsmarie-helene rio (1), ananda pascual (2), pierre-marie poulain (3), milena menna (3), mario adani (4), rosa balbin(5), alberto aparicio (5), José Luis López Jurado (5), Bàrbara Barceló (2), and Joaquin Tintoré (2)(1) CLS, DOS, Ramonville Saint Agne, France (mrio@cls.fr), (2) IMEDEA (CSIC-UIB), Mallorca, Spain, (3) OGS, Trieste,Italy, (4) INGV, Bologna, Italy, (5) IEO, Mallorca, SpainA new estimate of the Mediterranean Mean Dynamic Topography has been computed. The methodology used issimilar to the previous work by (Rio et al, 2007). A first guess solution based on the Mediterranean ForecastingSystem 7 years (1993-1999) model mean is improved using information from oceanographic in-situ measurementsand altimeter anomalies.Altimeter data used are the Level Anomalies computed specifically for the Mediterranean Sea by the SSALTO-DUACS center and distributed by AVISO. In addition, two types of in-situ measurements are used: on one hand,dynamic heights relative to 350m are computed from T/S profiles measured by CTD (IBAMar database coveringthe period 1993-2010), gliders (Socib-Imedea database for 2011) and different other casts, including ARGO floatsfrom the EN3 database for the period ranging from 1993 to 2012. The missing barotropic and deep barocliniccomponents were estimated and added to the dynamic heights relative to 350m in order to compute the absolutedynamic topography. On the other hand, surface currents were deduced from drifting buoy trajectories andprocessed to extract the geostrophic component.Altimeter sea level (resp. velocity) anomalies were then subtracted from the instantaneous in-situ measurementsof the absolute dynamic topography (resp. ocean surface geostrophic current) to obtain estimates of the meandynamic topography (resp. mean geostrophic currents).These estimates were then used to improve the model first guess through a multivariate objective analysis and mapthe Mediterranean Mean Dynamic Topography on a 1/8◦ regular grid.The obtained MDT was validated against independent in-situ observations. A specific validation was carried outin the Balearic Sea.

Rio, Marie Hélène

Barceló-Llull, Bàrbara

Tintoré, Joaquín

http://www.repositorio.ieo.es/e-ieo/bitstream/10508/5353/1/EGU2013-12693.pdf

A new Mean Dynamic Topography of the Mediterranean Sea based on model outputs, drifter data, hydrological profiles and altimeter measurements

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