TY - JOUR
T1 - Northern Hemisphere atmospheric pattern enhancing Eastern Mediterranean Transient-type events during the past 1000 years
AU - Cortina-Guerra, Aleix
AU - Gomez-Navarro, Juan José
AU - Martrat, Belen
AU - Montávez, Juan Pedro
AU - Incarbona, Alessandro
AU - Grimalt, Joan O.
AU - Sicre, Marie Alexandrine
AU - Mortyn, P. Graham
N1 - Publisher Copyright:
© 2021 Aleix Cortina-Guerra et al.
PY - 2021/7/20
Y1 - 2021/7/20
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85111107296&partnerID=8YFLogxK
U2 - 10.5194/cp-17-1523-2021
DO - 10.5194/cp-17-1523-2021
M3 - Article
AN - SCOPUS:85111107296
SN - 1814-9324
VL - 17
SP - 1523
EP - 1532
JO - Climate of the Past
JF - Climate of the Past
IS - 4
ER -
