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Contenido archivado el 2019-03-15

MEASUREMENT OF ATMOSPHERIC CO2 CONCENTRATION IN THE SUBANTARCTIC AREAS, AND OF ITS LONG-TERM EVOLUTION

Objetivo



THIS PROGRAMME CONSISTS MAINLY OF SETTING UP A STATION FOR STUDYING ATMOSPHERIC CO2 CONCENTRATION ON AMSTERDAM ISLAND, A SITE FREE FROM LOCAL CONTAMINATION. THUS, POSSIBLE SHORT-TERM VARIATIONS COULD BE TAKEN INTO ACCOUNT TO STUDY TRENDS AND SEASONAL EFFECTS IN THE CO2 CONCENTRATION IN THAT TYPICALLY OCEANIC AREA OF THE SOUTHERN HEMISPHERE.

A PROTOTYPE CO2 ANALYSER IS ALREADY IN SERVICE; OUR EXPERIENCE SUGGESTS SEVERAL IMPROVEMENTS.

1. A MAGNETIC CARTRIDGE RECORDER, ALLOWING AN AUTOMATIC COMPUTATION OF DATA IS NECESSARY A LONG-TERM PROGRAMME.

2. TECHNICAL IMPROVEMENTS SUCH AS:

- BETTER THERMIC STABILISATION

- NON VIBRATING VALVES, PRESSURE REGULATION, SAMPLING CONTROLE

- HIGHER FLOW RATE, REQUIRING MORE STANDARD GASES.

THE PROTOTYPE WILL BE BROUGHT BACK TO THE LABORATORY AND WILL BE USED AFTER IMPROVEMENTS MAINLY TO BEGIN THE INTERCALIBRATION PROGRAMME WITH THE SCRIPS INSTITUTION OF OCEANOGRAPHY. THIS WILL STATE THE RELIABILITY OF OUR RESULTS WITH WMO MOLE FRACTION SCALE FOR CO2 CONCENTRATIONS IN AIR.

Tema(s)

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Convocatoria de propuestas

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Régimen de financiación

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Coordinador

Centre National de la Recherche Scientifique (CNRS)
Aportación de la UE
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Dirección
Avenue de la Terrasse
91198 Gif-sur-Yvette
Francia

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