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Carbonate chemistry, carbon cycle and climate change (a multidisciplinary view)

Objective

Boron isotope studies and box modelling lent strong support to the hypothesis that pore water driven calcite dissolution during glacial periods can account for a significant part of the observed G-IG change in atmospheric pCO2. We propose to test the validity of this scenario by combining a down core study with numerical modelling . So far , no one has used all available proxies on the same samples to reconstruct the ocean carbonate chemistry. Such a study will help to identify natural sources and sinks of CO2. Knowledge of the nature and amplitude of fluctuations in the past can be used to assess the potential range of variations in the present ocean. Present day pCO2 increase, acidifies the ocean and reduces the calcification capacity of oceanic carbonate producers, introducing a mechanism for pCO2 decrease. We propose to quantify this negative feedback.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

ALFRED WEGENER INSTITUTE FOR POLAR AND MARINE RESEARCH
Address
Columbusstrasse
27568 Bremerhaven
Germany

Participants (5)

NETHERLANDS INSTITUTE FOR SEA RESEARCH
Netherlands
Address
Landsdiep 4
1790 AB Den Burg
UNIVERSITE DE LIEGE*ULG
Belgium
Address
Place Du 20 Aout 7
4000 Liege
UNIVERSITY OF SOUTHAMPTON
United Kingdom
Address
Southampton Ocenagraphic Centre, European Way
SO14 3ZH Southampton
University of Cambridge
United Kingdom
Address
Downing Street
CB2 3EQ Cambridge
WESTFAELISCHE WILHELMS - UNIVERSITAET MUENSTER
Germany
Address
Wilhelm-klemm-strasse 10
48149 Muenster