Northern Hemisphere atmospheric pattern enhancing Eastern Mediterranean Transient-type events during the past 1000 years
Cortina-Guerra, Aleix (Institut de Diagnosi Ambiental i Estudis de l'Aigua)
Gomez-Navarro, Juan José (University of Murcia)
Martrat, Belen (Institut de Diagnosi Ambiental i Estudis de l'Aigua)
Montávez, Juan Pedro (University of Murcia)
Incarbona, Alessandro (Università degli Studi di Palermo. Dipartimento di Scienze della Terra e del Mare)
Grimalt, Joan O. (Institut de Diagnosi Ambiental i Estudis de l'Aigua)
Sicre, Marie Alexandrine (Sorbonne University)
Mortyn, P. Graham (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals)
Universitat Autònoma de Barcelona. Departament de Geografia

Date:	2021
Abstract:	High-resolution climate model simulations for the last millennium were used to elucidate the main winter Northern Hemisphere atmospheric pattern during enhanced Eastern Mediterranean Transient (EMT-type) events, a situation in which an additional overturning cell is detected in the Mediterranean at the Aegean Sea. The differential upward heat flux between the Aegean Basin and the Gulf of Lion was taken as a proxy of EMT-type events and correlated with winter mean geopotential height at 500gmbar in the Northern Hemisphere (20-90g gN and 100g gW-80g gE). Correlations revealed a pattern similar to the East Atlantic/Western Russian (EA/WR) mode as the main driver of EMT-type events, with the past 1000 years of EA/WR-like mode simulations being enhanced during insolation minima. Our model results are consistent with alkenone sea surface temperature (SST) reconstructions that documented an increase in the west-east basin gradients during EMT-type events.
Grants:	Agencia Estatal de Investigación PGC2018-102288-B-I00 Ministerio de Economía y Competitividad IJCI-2015-26914
Note:	Unidad de excelencia María de Maeztu CEX2019-000940-M
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Climate of the Past, Vol. 17, Issue 4 (July 2021) , p. 1523-1532, ISSN 1814-9332

DOI: 10.5194/cp-17-1523-2021

10 p, 6.2 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut de Ciència i Tecnologia Ambientals (ICTA)
Articles > Research articles
Articles > Published articles