FRONTALIS 1

Type Oceanographic cruise
Set This cruise is part of the set FRONTALIS
Ship Alis
Ship owner IRD
Dates 29/03/2001 - 26/04/2001
Chief scientist(s) DELCROIX Thierry

IRD ANTENNE DE TOULOUSE

LEGOS/OMP

Observatoire Midi-Pyrenees

14, av. Edouard Belin

31400 TOULOUSE
DOI 10.17600/1100030
Objective The objectives of the FRONTALIS cruise were to observe and understand the mechanisms that govern the frontal zone situated on the eastern edge of the "warm pool" of the west-equatorial Pacific. The cruise also continued the series of cruises along 165 deg E that were started in 1984 to better appraise decadal variability. During this cruise, a subsurface ADCP-TAO mooring was deployed at 0 deg-165 E and meteorological sensors were changed on the TAO moorings at 8 deg S-165 deg E, as part of the French (IRD) contribution to the Pacific TAO network. This cruise fell under the IRD tropical Pacific Ocean climate (ECOP) study with the UMR LEGOS, the national climate dynamics program (PNEDC), and the International Climate Variability and Predictability (CLIVAR) program. Comments on the cruise's progression: La Nina conditions were encountered in the equatorial zone. Marked zonal front near 0 deg-157 deg E in nutrients and CO2, with weak surface salinity. Presence of barrier layer in the equatorial band and the subduction zone to the west of O deg-165 deg E. Problem with winding the cable on the hydrological winch: depths of stations were thus limited to 0-500 m instead of 0-1000 m. It is imperative that the winch be replaced in order to preserve the scientific equipment (CTD and L_ADCP) for future cruises.

Data managed by SISMER

Bibliography

Publications

Cravatte Sophie, Kestenare Elodie, Eldin Gerard, Ganachaud Alexandre, Lefevre Jerome, Marin Frederic, Menkes Christophe, Aucan Jerome (2015). Regional circulation around New Caledonia from two decades of observations. Journal Of Marine Systems, 148, 249-271. https://doi.org/10.1016/j.jmarsys.2015.03.004


Cravatte Sophie, Kessler William S., Marin Frederic (2012). Intermediate Zonal Jets in the Tropical Pacific Ocean Observed by Argo Floats. Journal Of Physical Oceanography, 42(9), 1475-1485. https://doi.org/10.1175/JPO-D-11-0206.1


Radenac Marie-Helene, Leger Fabien, Singh Awnesh, Delcroix Thierry (2012). Sea surface chlorophyll signature in the tropical Pacific during eastern and central Pacific ENSO events. Journal Of Geophysical Research-oceans, 117, -. https://doi.org/10.1029/2011JC007841


Terray Laurent, Corre Lola, Cravatte Sophie, Delcroix Thierry, Reverdin Gilles, Ribes Aurelien (2012). Near-Surface Salinity as Nature's Rain Gauge to Detect Human Influence on the Tropical Water Cycle. Journal Of Climate, 25(3), 958-977. https://doi.org/10.1175/JCLI-D-10-05025.1


Singh Awnesh, Delcroix Thierry (2011). Estimating the effects of ENSO upon the observed freshening trends of the western tropical Pacific Ocean. Geophysical Research Letters, 38(L21607), 1-6. Publisher's official version : https://doi.org/10.1029/2011GL049636 , Open Access version : https://archimer.ifremer.fr/doc/00213/32450/


Singh Awnesh, Delcroix Thierry, Cravatte Sophie (2011). Contrasting the flavors of El Nino-Southern Oscillation using sea surface salinity observations. Journal Of Geophysical Research-oceans, 116(C06016), 1-16. Publisher's official version : https://doi.org/10.1029/2010JC006862 , Open Access version : https://archimer.ifremer.fr/doc/00213/32452/


Cravatte Sophie, Ganachaud Alexandre, Duong Quoc-Phi, Kessler William S., Eldin Gerard, Dutrieux Pierre (2011). Observed circulation in the Solomon Sea from SADCP data. Progress In Oceanography, 88(1-4), 116-130. https://doi.org/10.1016/j.pocean.2010.12.015


Delcroix Thierry, Alory G., Cravatte S., Correge T., McPhaden M. J. (2011). A gridded sea surface salinity data set for the tropical Pacific with sample applications (1950-2008). Deep-sea Research Part I-oceanographic Research Papers, 58(1), 38-48. https://doi.org/10.1016/j.dsr.2010.11.002


Maes Christophe, Sudre Loupe Joeel, Garcon Veronique (2010). Detection of the Eastern Edge of the Equatorial Pacific Warm Pool Using Satellite-Based Ocean Color Observations. Sola, 6, 129-132. Publisher's official version : https://doi.org/10.2151/sola.2010-033 , Open Access version : https://archimer.ifremer.fr/doc/00208/31884/


Cravatte Sophie, Delcroix Thierry, Zhang Dongxiao, McPhaden Michael, Leloup Julie (2009). Observed freshening and warming of the western Pacific Warm Pool. Climate Dynamics, 33(4), 565-589. https://doi.org/10.1007/s00382-009-0526-7


Maes Christophe (2008). On the ocean salinity stratification observed at the eastern edge of the equatorial Pacific warm pool. Journal Of Geophysical Research-oceans, 113(C03027), 1-15. Publisher's official version : https://doi.org/10.1029/2007JC004297 , Open Access version : https://archimer.ifremer.fr/doc/00208/31886/


Eldin Gerard, Delcroix Thierry, Rodier Martine (2004). The frontal area at the eastern edge of the western equatorial Pacific warm pool in April 2001. Journal Of Geophysical Research-oceans, 109(C07006), 1-10. https://doi.org/10.1029/2003JC002088


Maes Christophe, Picaut Joël, Kuroda Yoshifumi, Ando Kentaro (2004). Characteristics of the convergence zone at the eastern edge of the Pacific warm pool. Geophysical Research Letters, 31(L11304), 1-4. Publisher's official version : https://doi.org/10.1029/2004GL019867 , Open Access version : https://archimer.ifremer.fr/doc/00208/31888/


Thesis using campaign data

Receveur Aurore (2019). Ecologie spatiale du micronecton : distribution, diversité et importance dans la structuration de l'écosystème pélagique du Pacifique sud-ouest. PhD Thesis, Unversité d'Aix Marseille.