MINERVE 03-04 (R0,R1,R3)
| Type | Added value transit |
|---|---|
| Set | This cruise is part of the set MINERVE |
| Ship | L'Astrolabe |
| Ship owner | IPEV |
| Dates | 21/10/2003 - 06/03/2004 |
| Chief scientist(s) | SCHAUER Bernard, BREVIERE Emilie, POISSON Alain |
LABORATOIRE D'OCÉANOGRAPHIE ET DU CLIMAT : EXPÉRIMENTATIONS ET APPROCHES NUMÉRIQUES - UMR 7159 Institut Pierre Simon Laplace Boîte 100 4 place Jussieu 75005 Paris +33 (1) 44 27 32 48 |
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| DOI | 10.17600/4210010 |
| Objective | The MINERVE 03-04 cruises taking advantage of transit aimed to observe and measure spatial-temporal variations of pCO2 at the surface with respect to related parameters (Chlorophyll, temperature, salinity, TCO2, AT and 13C). Studies to model monthly variations in pCO2 either locally or on the scale of the Indian basin showed that the simulated pCO2 fields were highly sensitive to the surface and subsurface boundary conditions. Therefore, one of the main objectives is to obtain sections of total dissolved inorganic carbon (TCO2) and Total Alkalinity (TA) data which is very tightly meshed at the surface and of very high accuracy. Determination of the ocean mixed layer was based on measurements taken in the framework of the SURVOSTRAL program using XBT probes. This falls under the PROOF Flamenco2 project. We took semi-continuous measurements of total dissolved inorganic carbon (TCO2) and Total Alkalinity (TA) in surface using a technique we developed at LBCM, as well as pCO2 and surface water temperature and pCO2 measurements in air. An automated continuous pCO2 measurement system was used (calibrated every 6 hours). Measurements were acquired and data pre-processed on board. Filters were recovered every 4 hours to measure chlorophyll. These measurements were conducted by the Australians at CSIRO and the Australian Antarctic Division of Hobart at the return of each of the l'Astrolabe vessel's rotations. Surface water samples were taken to measure stable carbon isotopes and bioptic sensors were set up by CSIRO on the pumping circuit for continuous chlorophyll measurements. |
