Séminaire
Titre :
Persistent drying in the tropics and the Atlantic Multidecadal Oscillation linked to natural forcing
Nom du conférencier :
Amos Winter
Son affiliation :
Indiana State University (USA) & University of Puerto Rico
Laboratoire organisateur : LOCEAN
Date et heure : 23-05-2017 11h00
Lieu :
UPMC - 4 place Jussieu - 75005 Paris - LOCEAN - salle de réunion - tour 45/55, 4eme étage
Résumé :
Paleo-climate proxies are well suited for this purpose as they provide long time series that pre-date and complement the present, often short instrumental observations. Here we present paleo-precipitation data
from a speleothem located in Mesoamerica and the eastern Caribeean that reveal large multi-decadal declines in regional precipitation, whose onset coincides with clusters of large volcanic eruptions during the last 400 years. This reconstruction provides new independent evidence of long-lasting volcanic effects on climate and elucidates key aspects of the causal chain of physical processes determining the tropical climate response to global radiative forcing.
Contact :
Diana.Ruiz-Pino@locean-ipsl.upmc.fr