Descripción del proyecto
Medición de efectos cuantificables en la ciencia del clima
El océano Antártico es responsable de más del 60 % del exceso de calor relacionado con el cambio climático antropogénico absorbido cada año por los océanos del mundo. Además, regula el clima del planeta al controlar el intercambio de calor y carbono entre la atmósfera y el océano. Con todo, se sabe poco sobre los procesos subyacentes. Para contribuir a reducir las incertidumbres en las predicciones del cambio climático, en el proyecto financiado con fondos europeos SO-CHIC se cuantificará la variabilidad de los presupuestos de calor y carbono del océano Antártico a través del estudio de los procesos básicos que controlan los intercambios entre la atmósfera, el océano y el hielo marino mediante una combinación de métodos observacionales y de modelización. Para ello, se compaginará la observación con series temporales decenales existentes y la modelización de vanguardia.
Objetivo
The Southern Ocean regulates the global climate by controlling heat and carbon exchanges between the atmosphere and the ocean. It is responsible for about 60-90% of the excess heat (i.e. associated with anthropogenic climate change) absorbed by the World Oceans each year, and is also recognised to largely control decadal scale variability of Earth carbon budget, with key implications for decision makers and regular global stocktake agreed as part of the Paris agreement. Despite such pivotal climate importance, its representation in global climate model represents one of the main weaknesses of climate simulation and projection because too little is known about the underlying processes. Limitations come both from the lack of observations in this extreme environment and its inherent sensitivity to intermittent small-scale processes that are not captured in current Earth system models. The overall objective of SO-CHIC is to understand and quantify variability of heat and carbon budgets in the Southern Ocean through an investigation of the key processes controlling exchanges between the atmosphere, ocean and sea ice using a combination of observational and modelling approaches. SO-CHIC considers the Atlantic sector of the Southern Ocean as a natural laboratory both because of its worldwide importance in water-mass formation and because of the strong European presence in this sector already established at national levels, which allow to best leverage existing expertise, infrastructure, and observation network, around one single coordinated overall objective. SO-CHIC also takes the opportunity of the recent re-appearance of the Atlantic Sector Weddell Polynya to unveil its dynamics and global impact on heat and carbon cycles. A combination of dedicated observation, existing decades-long time-series, and state-of-the-art modelling will be used to address specific objectives on key processes, as well as their impact and feedback on the large-scale atmosphere-ocean system.
Ámbito científico
Palabras clave
Programa(s)
Convocatoria de propuestas
Consulte otros proyectos de esta convocatoriaConvocatoria de subcontratación
H2020-LC-CLA-2018-2
Régimen de financiación
RIA - Research and Innovation actionCoordinador
75006 Paris
Francia