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Comparison of ocean dynamics with a regional circulation model and improved altimetry in the north-western Mediterranean

Comparison of ocean dynamics with a regional circulation model and improved altimetry in the north-western Mediterranean
Comparison of ocean dynamics with a regional circulation model and improved altimetry in the north-western Mediterranean
The spatial and temporal resolution of satellite altimetry is usually sufficient for monitoring the changes of sea surface topography in the open ocean. However, coastal ocean dynamics are much more complex, being characterized by smaller spatial and temporal scales of variability. The quality and availability of satellite-derived products along the coasts have to be improved, with a strategy optimized for coastal targets. Therefore a coastal multi-satellite altimetry dataset (TOPEX/Poseidon, Jason-1; Envisat; GFO) at a 10 - 20 Hz sampling rate has been derived from routine geophysical data products using a new processing software dedicated to coastal zone applications. Improved along-track sea level variations with fine space scales are available in the North-western Mediterranean Sea from 2001 to 2003, and are compared with high-resolution numerical model elevations from the eddy-resolving model SYMPHONIE. This preparatory work emphasizes the potential of improved multi-satellite altimetry for validating coastal hydro-dynamical models and could contribute in the future to a better tuning of the boundary conditions of the simulations.
Coastal altimetry, Boussinesq model, Mediterranean Sea, Coastal modelling
1017-0839
117-133
Bouffard, J.
b02ab58f-e153-43e1-bc2b-6b926b5691f4
Vignudelli, S.
86bdf7f8-68da-4851-bc7b-c011620fd194
Herrmann, M.
cb0717f7-ee6f-4bf4-a127-c731e94651cb
Lyard, F.
5e91a232-763c-439f-a57f-cda81df0e788
Marsaleix, P.
29802388-e78b-43a8-93fe-63b31ec06c9a
Menard, Y.
24e3e71b-d366-47d7-891a-cd9e4e8074b0
Cipollini, P.
276e356a-f29e-4192-98b3-9340b491dab8
Bouffard, J.
b02ab58f-e153-43e1-bc2b-6b926b5691f4
Vignudelli, S.
86bdf7f8-68da-4851-bc7b-c011620fd194
Herrmann, M.
cb0717f7-ee6f-4bf4-a127-c731e94651cb
Lyard, F.
5e91a232-763c-439f-a57f-cda81df0e788
Marsaleix, P.
29802388-e78b-43a8-93fe-63b31ec06c9a
Menard, Y.
24e3e71b-d366-47d7-891a-cd9e4e8074b0
Cipollini, P.
276e356a-f29e-4192-98b3-9340b491dab8

Bouffard, J., Vignudelli, S., Herrmann, M., Lyard, F., Marsaleix, P., Menard, Y. and Cipollini, P. (2008) Comparison of ocean dynamics with a regional circulation model and improved altimetry in the north-western Mediterranean. TAO: Terrestrial Atmospheric and Oceanic Sciences, 19 (1-2), 117-133. (doi:10.3319/TAO.2008.19.1-2.117(SA)).

Record type: Article

Abstract

The spatial and temporal resolution of satellite altimetry is usually sufficient for monitoring the changes of sea surface topography in the open ocean. However, coastal ocean dynamics are much more complex, being characterized by smaller spatial and temporal scales of variability. The quality and availability of satellite-derived products along the coasts have to be improved, with a strategy optimized for coastal targets. Therefore a coastal multi-satellite altimetry dataset (TOPEX/Poseidon, Jason-1; Envisat; GFO) at a 10 - 20 Hz sampling rate has been derived from routine geophysical data products using a new processing software dedicated to coastal zone applications. Improved along-track sea level variations with fine space scales are available in the North-western Mediterranean Sea from 2001 to 2003, and are compared with high-resolution numerical model elevations from the eddy-resolving model SYMPHONIE. This preparatory work emphasizes the potential of improved multi-satellite altimetry for validating coastal hydro-dynamical models and could contribute in the future to a better tuning of the boundary conditions of the simulations.

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More information

Published date: April 2008
Keywords: Coastal altimetry, Boussinesq model, Mediterranean Sea, Coastal modelling

Identifiers

Local EPrints ID: 51247
URI: https://eprints.soton.ac.uk/id/eprint/51247
ISSN: 1017-0839
PURE UUID: 8d493898-18dc-4bb8-ac63-e818bc69acdd

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Date deposited: 14 May 2008
Last modified: 13 Mar 2019 20:49

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Contributors

Author: J. Bouffard
Author: S. Vignudelli
Author: M. Herrmann
Author: F. Lyard
Author: P. Marsaleix
Author: Y. Menard
Author: P. Cipollini

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