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Article Dans Une Revue Scientific Reports Année : 2021

Global carbon sequestration through continental chemical weathering in a climatic change context

Juan Luis Lechuga-Crespo
  • Fonction : Auteur
Sabine Sauvage
Estilita Ruiz-Romera
  • Fonction : Auteur
Michelle van Vliet
  • Fonction : Auteur
Jean-Luc Probst
Clément Fabre
  • Fonction : Auteur

Résumé

Abstract This study simulates carbon dioxide (CO 2 ) sequestration in 300 major world river basins (about 70% of global surface area) through carbonates dissolution and silicate hydrolysis. For each river basin, the daily timescale impacts under the RCP 2.6 and RCP 8.5 climate scenarios were assessed relative to a historical baseline (1969–1999) using a cascade of models accounting for the hydrological evolution under climate change scenarios. Here we show that the global temporal evolution of the CO 2 uptake presents a general increase in the annual amount of CO 2 consumed from 0.247 ± 0.045 Pg C year −1 to 0.261 and 0.273 ± 0.054 Pg C year −1 , respectively for RCP 2.6 and RCP 8.5. Despite showing a general increase in the global daily carbon sequestration, both climate scenarios show a decrease between June and August. Such projected changes have been mapped and evaluated against changes in hydrology, identifying hot spots and moments for the annual and seasonal periods.

Dates et versions

hal-03826432 , version 1 (24-10-2022)

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Citer

Juan Luis Lechuga-Crespo, Sabine Sauvage, Estilita Ruiz-Romera, Michelle van Vliet, Jean-Luc Probst, et al.. Global carbon sequestration through continental chemical weathering in a climatic change context. Scientific Reports, 2021, 11 (1), pp.23588. ⟨10.1038/s41598-021-02891-y⟩. ⟨hal-03826432⟩

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