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Global sensitivity of weathering rates to atmospheric CO2 under the assumption of saturated river discharge

Published online by Cambridge University Press:  05 July 2018

S. Arens  and
A. Kleidon
S. Arens
Affiliation:
Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07541 Jena, Germany
A. Kleidon
Affiliation:
Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, 07541 Jena, Germany
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Abstract

The sensitivity of the global river-borne flux of Ca2+ to atmospheric pCO2 was obtained from model simulations under the assumption of saturation of CaCO3. The response was subdivided into contributions from changes in runoff, temperature and partial CO2 pressure and these were then used to parameterize the different direct and indirect effects of a changing climate on carbonate weathering and equilibria. The parameterizations are comparable/compatible to those of Walker et al. (1981) for silicate weathering, but are taken directly from models demonstrating the potential of this approach in weathering studies.

Type
Research Article
Information
Mineralogical Magazine , Volume 72 , Issue 1 , February 2008 , pp. 301 - 304
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

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