ELISA (1997-1998) mesoscale survey in the Algerian sub-basin (Western Mediterranean): hydrological data set of the cruise ELISA-3 (spring 1998)

Date 2020-03-11
Temporal extent 1998-03-19 -1998-03-30
Author(s) Taupier-Letage IsabelleORCID1
Affiliation(s) 1 : CNRS UMR 7294, AMU, UTLN, IRD, MIO, Antenne de la Seyne, CS20330, 83507 La Seyne sur Mer, France
DOI 10.17882/72543
Publisher SEANOE
Note Check the relevance of the sampling pattern (high-resolution dedicated to mesoscale eddies in a limited area)
Keyword(s) Algerian Current, CTD profile, water masses, Western Mediterranean, Water bottle sample, Atlantic Water (AW), Mesoscale, Chlorophyll, Levantine Intermediate Water (LIW), Eddies, Nutrients, Western Mediterranean Deep Water (WMDW), Hydrology, general circulation

The Eddies and Leddies Interdisciplinary Study in the Algerian sub-basin (ELISA) experiment (1997–1998) was a multidisciplinary and multiplatform experiment designed to study the anticyclonic Algerian Eddies (AEs) generated by the instability of the Algerian Current, and their influence on the general circulation and biological phenomena. The data collected confirmed for instance the eastward path of LIW along the Algerian slope, and showed that these anticyclones correspond to the richer areas in spring.

Following the daily analysis of satellite thermal images to track the AEs, the sampling scheme was adapted in real time, using transects with CTD casts every ~10km. So that the data are strongly "biased" toward describing (moving) eddies at high resolution: they are likely to be unadequate for a few purposes.

The ELISA hydrological data sets have been obtained during the four cruises ELISA-1 to 4, from summer 1997 to summer 1998.

This data set includes the ELISA-3 cruise (spring 1998) with 52 CTD profiles plus associated water bottles samples. Data sets are delivered in both netcdf and ODV formats.

Licence CC-BY-NC
Acknowledgements ELISA was made possible with the funding provided by the MAST3/MTP2/MATER EU program and the INSU/CNRS, the shiptime by the national French oceanographic fleet, a PhD grant by the DRET/DGA. The satellite images were provided by the DFD/DLR (www.dfd.dlr.de). Contribution MTP II-MATER/042. All the contributors and participants to the ELISA program are warmly thanked.
Sensor metadata

CTD SBE 911+ , water sampler

Fluorometer, transmissometer

File Size Format Processing Access
ELISA-3 CTD profiles and bottle samples 13 KB ODV Quality controlled data Open access
ELISA-3 CTD profiles and water samples 28 KB NC, NetCDF Quality controlled data Open access
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How to cite 

Taupier-Letage Isabelle (2020). ELISA (1997-1998) mesoscale survey in the Algerian sub-basin (Western Mediterranean): hydrological data set of the cruise ELISA-3 (spring 1998). SEANOE. https://doi.org/10.17882/72543

In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :

Millot C., Taupier-Letage I. (2005). Additional evidence of LIW entrainment across the Algerian subbasin by mesoscale eddies and not by a permanent westward flow. Progress in Oceanography, 66(2-4), 231-250. https://doi.org/10.1016/j.pocean.2004.03.002

Taupier-Letage I. (2003). Biological response to mesoscale eddies in the Algerian Basin. Journal of Geophysical Research, 108(C8), -. https://doi.org/10.1029/1999JC000117