Projektbeschreibung
Messung von quantifizierbaren Klimafolgen
Das Südpolarmeer reguliert mehr als 60 % der überschüssigen Wärme, die mit anthropogenen Klimaveränderungen in Zusammenhang gebracht und jedes Jahr von den Weltmeeren absorbiert wird. Es kontrolliert den Wärme- und Kohlenstoffaustausch zwischen Atmosphäre und Meer und regelt so das weltweite Klima. Welche Prozesse hier genau zugrunde liegen, ist jedoch bisher kaum erforscht. Das EU-finanzierte Projekt SO-CHIC will Unsicherheiten bei Vorhersagen zum Weltklimawandel verringern. Um neue Erkenntnisse über Schwankungen des Wärme- und Kohlenstoffhaushaltes im Südpolarmeer zu gewinnen, wird es deshalb mehrere Schlüsselprozesse untersuchen, die den Austausch zwischen Atmosphäre, Meer und Meereis kontrollieren. Die Forschenden werden dazu verschiedene Beobachtungsansätze, lange Zeitreihen von mehreren Dekaden sowie innovative Modellierungsverfahren einsetzen.
Ziel
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.
Wissenschaftliches Gebiet
Schlüsselbegriffe
Programm/Programme
Thema/Themen
Aufforderung zur Vorschlagseinreichung
Andere Projekte für diesen Aufruf anzeigenUnterauftrag
H2020-LC-CLA-2018-2
Finanzierungsplan
RIA - Research and Innovation actionKoordinator
75006 Paris
Frankreich