Innovating Works

ROC-CO2

Financiado
Carbon dioxide CO2 emissions by rock derived organic carbon oxidation
The global carbon cycle controls Earth’s climate by the emission and drawdown of carbon dioxide (CO2) from the atmosphere. One of the major sources of CO2 is thought to be the oxidation of organic carbon contained in rocks during... The global carbon cycle controls Earth’s climate by the emission and drawdown of carbon dioxide (CO2) from the atmosphere. One of the major sources of CO2 is thought to be the oxidation of organic carbon contained in rocks during chemical weathering. Since the industrial revolution, this flux has been accelerated by burning fossil fuels. However, the natural rates of CO2 emission by rock-derived organic carbon oxidation are very poorly constrained – the only major CO2 source that has not been properly quantified – and the dominant controls on this flux remain unclear. The CO2 release is likely to be ~100 TgC/yr, similar to degassing from volcanoes. Without knowing the rate of CO2 emission and the controls on this flux, it is not possible to fully understand the evolution of atmospheric CO2 and global climate over geological timescales, nor to project future changes over hundreds to thousands of years. To address this deficit and quantify a major geological CO2 source, the proposal will: 1) Assess which factors govern rock-derived organic carbon oxidation. 2) Determine how environmental changes impact oxidation rates and CO2 release. 3) Quantify the global CO2 emissions by rock-derived organic carbon oxidation during chemical weathering, and assess how they may have varied both over Earth history and via anthropogenic change. By quantifying a major CO2 emission for the first time, this project will provide a step change in our understanding of the geological, as opposed to the anthropogenically-modified, carbon cycle. Measurement of rock-derived organic carbon oxidation will require a new approach, harnessing state-of-the-art geochemical proxies carried by rivers (rhenium). Data from river catchments spanning large gradients in the likely environmental controls (erosion, temperature), will elucidate the main factors governing this process, and enable construction of a data-driven numerical model to provide the first quantification of CO2 emissions by this process. ver más
31/05/2022
UOXF
1M€
Duración del proyecto: 75 meses Fecha Inicio: 2016-02-12
Fecha Fin: 2022-05-31

Línea de financiación: concedida

El organismo H2020 notifico la concesión del proyecto el día 2022-05-31
Línea de financiación objetivo El proyecto se financió a través de la siguiente ayuda:
ERC-StG-2015: ERC Starting Grant
Cerrada hace 9 años
Presupuesto El presupuesto total del proyecto asciende a 1M€
Líder del proyecto
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Perfil tecnológico TRL 4-5