CHanges Of CO2 Levels during pAst and fuTure intErglacials

Información del proyecto

CHOCOLATE

Identificador del acuerdo de subvención: 656625

DOI

10.3030/656625

Proyecto finalizado el 15 Diciembre 2016

Fecha de la firma de la CE 6 Marzo 2015

Fecha de inicio 15 Octubre 2015

Fecha de finalización 14 Octubre 2017

Financiado con arreglo a

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Coste total

€ 185 076,00

Aportación de la UE

€ 185 076,00

Coordinado por

UNIVERSITE DE BORDEAUX
France

Objetivo

The concentration of carbon dioxide (CO2) in the atmosphere depends on carbon cycle processes, i.e. sources and sinks of carbon. The future evolution of the carbon sinks is not well known, which inhibits robust quantification of future atmospheric CO2 concentration and the resulting climate change. Understanding warm past periods is essential to constrain climate models and accurately predict future changes. During the last million years, warmer periods, called interglacials, happened every ~100,000 years. CO2 levels measured in interglacials before the mid-Bruhnes event (MBE), a large climate shift taking place ~430,000 years ago, are lower than the CO2 in interglacials after the MBE. The cause for this drastic evolution is still unexplained, resulting in uncertainty in the carbon cycle response to global warming.
To resolve that issue, we propose to combine data and model simulations including new key processes. We suggest that a major mechanism was a slower circulation during interglacials before the MBE, resulting in more ocean carbon storage and lower atmospheric CO2. We also hypothesize that sea-level changes played a considerable role by altering carbon sinks from land vegetation and shallowing ocean carbonate sedimentation. We will include these mechanisms in a state-of-the-art climate model applicable to long timescales, and compare its modified behaviour with paleoclimate data and more complex models used for projections. This will provide a step change in our understanding of the impact of ocean circulation and sea-level changes on the carbon cycle. It will benefit the European and international scientific community by shedding new light on these processes, and by setting the basis to include these new mechanisms in climate models used for projections. The excellence of the experienced researcher in carbon cycle modelling combined with the expertise in ocean modelling and paleoclimate data from the host institution will ensure the success of this project.

Ámbito científico (EuroSciVoc)

• ciencias naturales › ciencias de la tierra y ciencias ambientales conexas › geología › sedimentología
• ciencias naturales › informática y ciencias de la información › base de datos
• ciencias naturales › ciencias de la tierra y ciencias ambientales conexas › paleontología › paleoclimatología
• ciencias naturales › ciencias químicas › química inorgánica › compuestos inorgánicos
• ciencias naturales › ciencias de la tierra y ciencias ambientales conexas › ciencias de la atmósfera › climatología › cambios climáticos

Programa(s)

• H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions PROGRAMA PRINCIPAL
  
• H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
  

Tema(s)

• MSCA-IF-2014-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF)
  

Régimen de financiación

MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

Convocatoria de propuestas

H2020-MSCA-IF-2014

Coordinador

UNIVERSITE DE BORDEAUX

• Aportación neta de la UEn: € 185 076,00
• Dirección: PLACE PEY BERLAND 35 ; 33000 BORDEAUX ; Francia
• Región: Nouvelle-Aquitaine › Aquitaine › Gironde
• Tipo de actividad: Higher or Secondary Education Establishments
• Coste total: € 185 076,00