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Medargo: a Drifting Profiler Program in the Mediterranean Sea : Volume 3, Issue 3 (08/08/2007)

By Poulain, P.-m.

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Book Id: WPLBN0004020332
Format Type: PDF Article :
File Size: Pages 17
Reproduction Date: 2015

Title: Medargo: a Drifting Profiler Program in the Mediterranean Sea : Volume 3, Issue 3 (08/08/2007)  
Author: Poulain, P.-m.
Volume: Vol. 3, Issue 3
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2007
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Millot, C., Bras, S. L., Cruzado, A., Gertman, I., De La Villeon, L. P., Rupolo, V.,...Molcard, A. (2007). Medargo: a Drifting Profiler Program in the Mediterranean Sea : Volume 3, Issue 3 (08/08/2007). Retrieved from http://worldlibrary.net/


Description
Description: Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Trieste, Italy. In the framework of the EU-funded MFSTEP project, autonomous drifting profilers were deployed throughout the Mediterranean Sea to collect temperature and salinity profile data and to measure subsurface currents. The realization of this profiler program in the Mediterranean, referred to as MedArgo, is described and assessed using data collected between June 2004 and December 2006 (including more than 2000 profiles). Recommendations are provided for the permanent future implementation of MedArgo in support of operational oceanography in the Mediterranean Sea.

More than twenty drifting profilers were deployed from research vessels and ships-of-opportunity in most areas of the Mediterranean. They were all programmed to execute 5-day cycles with a drift at a parking depth of 350 m and CTD profiles from either 700 or 2000 m up to the surface. They stayed at the sea surface for about 6 h to be localised by, and transmit the data to, the Argos satellite system. The temperature and salinity data obtained with pumped Sea-Bird CTD instruments were processed and made available to the scientific community and to operational users in near-real time using standard Argo protocols, and were assimilated into Mediterranean numerical forecasting models.

In general, the cycling and sampling characteristics chosen for the MedArgo profilers were found to be adequate for the Mediterranean. However, it is strongly advised to use GPS and global cellular phone telemetry or the future Argos bi-directional satellite system in order to avoid data compression and losses, for the continuation of the Mediterranean drifting profiler program.


Summary
MedArgo: a drifting profiler program in the Mediterranean Sea

Excerpt
Poulain, P.-M. and Zambianchi, E.: Near-surface circulation in the central Mediterranean Sea as deduced from Lagrangian drifters in the 1990's, Cont. Shelf Res., 27(7), 981–1001, 2007.; Rupolo, W.: Task 4120: Intermediate currents. MFSTEP deliverable WP4D2 (http://poseidon.ogs.trieste.it/WP4/pdf/TASK4120.pdf), 2003a.; Rupolo, W.: Task 4130: Temperature and salinity. MFSTEP deliverable WP4D6 (http://poseidon.ogs.trieste.it/WP4/pdf/TASK4130.pdf), 2003b.; Salas, J., Garcia-Ladona, E., and Font, J.: Statistical analysis of the surface circulation in the Algerian Current using Lagrangian buoys, J. Mar. Syst., 29, 69–85, 2001.; Smith, W. H. F. and Sandwell, D. T.: Global sea floor topography from satellite altimetry and ship depth soundings, Science, 277(5334), 1956–1962, 1997.; Taillandier, V., Griffa, A., Poulain, P.-M., and Béranger, K.: Assimilation of Argo float positions in the north western Mediterranean Sea and impact on ocean circulation simulations, Geophys. Res. Lett., 33, L11604, doi:10.1029/2005GL025552, 2006.; Blanke, B. and Raynaud, S.: Kinematics of the Pacific Equatorial Undercurrent: an Eulerian and Lagrangian approach from GCM resuts, J. Phys. Oceanogr., 27, 1038–1053, 1997.; Davis, R. E., Webb, D. C., Regier, L. A., and Dufour J.: The Autonomous Lagrangian Circulation Explorer (ALACE), J. Atmos. Ocean. Tech., 9, 264–285, 1992.; Dobricic, S., Pinardi, N., Adani, M., Tonani, M., Fratianni, C., Bonazzi, A., and Fernandez, V.: Daily oceanographic analyses by the Mediterranean basin scale assimilation system, Ocean Sci., 3, 149–157, 2007.; Emelianov, M., Font, J., Turiel, A., Millot, C., Solé., J., Poulain, P.-M., Julià, A., and Vitrià, M. R.: Transformation of Levantine Intermediate Water tracked by MEDARGO floats in the Western Mediterranean, Ocean Sci., 2, 281–290, 2006.; Font, J., Emelianov, M., Julià, A., Puertas, J., and Lloret, M.: Subtask 4230 final report, MFSTEP deliverable WP4D7 (http://poseidon.ogs.trieste.it/WP4/task4230/), 2003.; Gould, J. and the Argo Science Team: Argo profiling floats bring new era of in situ ocean observations, EOS Transactions, 85(19), 185–190, 2004.; Testor, P. and Gascard., J.-C.: Large-scale spreading of deep waters in the Western Mediterranean Sea by submesoscale coherent eddies, J. Phys. Oceanogr., 33, 75–87, 2003.; Testor, P. and Gascard, J.-C.: Large scale flow separation and mesoscale eddy formation in the Algerian Basin, Prog. Oceanogr., 66, 211–230, 2005.; Griffa, A. and Molcard, A.: Recommendations for the profiler cycle characteristics: Part A: Estimates of displacement and intermediate current errors for ARGO floats, using historical current measurements, MFSTEP deliverable WP4D2 (http://poseidon.ogs.trieste.it/WP4/pdf/WP4D2.pdf), 2003.; Loaec, G., Cortes, N., Menzel, M., and Moliera, J.: PROVOR: a hydrographic profiler based on MARVOR technology, IEEE-Oceans'98, September 1998, 1998.; Loaec, G, Carval, T., Le Reste, S., and Maudire, G.: Provor and Coriolis Data Center: a step towards operational oceanography, Data Buoy Conference Panel Workshop, 1999.; Le Bras, S. and Poulain, P.-M.: Subtask 4240 final report, MFSTEP deliverable WP4D8 (http://poseidon.ogs.trieste.it/WP4/pdf/WP4D8.pdf), 2004.; Lumpkin, R. and Pazos, M.: Measuring surface currents with SVP drifters: the instrument, its data and some results., in: Lagrangian Analysis and Prediction of Coastal and Ocean Dynamics, edited by: Griffa, A. et al., Cambridge Univ. Press, 39–67, 2007.; Manzella, G., Reseghetti, F., Coppini, G., Borghini, M., Cruzado, A., Galli, C., Gertman, I., Gervais, T., Hayes, D., Millot, C., Murashkovsky, A., Özsoy, E., Tziavos, C., Velásquez, Z., and Zodiatis, G.: The improvements of the ships of opportunity program in MFSTEP, Ocean Sci., 3, 245–258, 2007.; Ollitrault, M. G., Loaec, G., and Dumortier, C.: MARVOR: A multi-cycle RAFOS float. Sea-Technology, 35(2), 39&nd

 

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