TRACE

Tephra constraints on rapid climatic events

Coordinatore	SWANSEA UNIVERSITY    more Spiacenti, non ci sono informazioni su questo coordinatore. Contattare Fabio per maggiori infomrazioni, grazie.
Nazionalità Coordinatore	United Kingdom [UK]
Totale costo	1˙471˙116 €
EC contributo	1˙471˙116 €
Programma	FP7-IDEAS-ERC Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
Code Call	ERC-2010-StG_20091028
Funding Scheme	ERC-SG
Anno di inizio	2011
Periodo (anno-mese-giorno)	2011-09-01   -   2016-08-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	SWANSEA UNIVERSITY  Organization address address: SINGLETON PARK city: SWANSEA postcode: SA2 8PP contact info Titolo: Dr. Nome: Siwan Manon Cognome: Davies Email: send email Telefono: 441792000000 Fax: 441792000000	UK (SWANSEA)	hostInstitution	1˙471˙116.80
2	SWANSEA UNIVERSITY  Organization address address: SINGLETON PARK city: SWANSEA postcode: SA2 8PP contact info Titolo: Ms. Nome: Julie Cognome: Williams Email: send email Telefono: +44 1792 29 5824 Fax: +44 1792 513398	UK (SWANSEA)	hostInstitution	1˙471˙116.80

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 Obiettivo del progetto (Objective)

'Little has challenged our understanding of climate change more so than the abruptness with which large-scale shifts in temperature occurred during the last glacial period. Atmospheric temperature jumps of 8-16°C, occurring within decades over Greenland, were closely matched by rapid changes in North Atlantic sea surface temperatures. Though these climatic instabilities are well-documented in various proxy records, the causal mechanisms of such short-lived oscillations remain poorly understood. Two hypotheses have been proposed: one relating to the behaviour of the ocean circulation and the other to the dynamics of the atmosphere. Testing these hypotheses, however, is severely hampered by dating uncertainties that prevent the integration of proxy records on common timescales. As a result unravelling the lead/lag responses (hence cause and effect) between the Earth’s climate components is currently beyond our reach. TRACE will exploit a powerful new approach whereby microscopic traces of volcanic events are employed to precisely correlate proxy records from the North Atlantic region to assess the phasing relationships between the atmosphere and the ocean during these rapid climatic events. Volcanic layers have the unique advantage of representing fixed time-lines between different proxy records. This correlation tool has experienced a considerable step-change in recent years, with invisible layers of volcanic ash traced over much wider geographical regions than previously thought. What is more, recent work has identified new, previously unknown eruptions - several of which coincide with the rapid climatic jumps imprinted in the proxy records. Thus tephra isochrones represent (perhaps the only) independent constraints for resolving past events on decadal timescales.'