%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Espinoza, J. C.
%A Marengo, J. A.
%A Ronchail, J.
%A Carpio, J. M.
%A Flores, L. N.
%A Guyot, Jean-Loup
%T The extreme 2014 flood in south-western Amazon basin : the role of tropical-subtropical South Atlantic SST gradient
%D 2014
%L fdi:010063643
%G ENG
%J Environmental Research Letters
%@ 1748-9326
%K extreme flood ; Amazon basin ; Madeira river ; Bolivian Amazon ; Brazilian Amazon
%K AMAZONE BASSIN ; BOLIVIE ; BRESIL ; ATLANTIQUE ; ZONE TROPICALE
%M ISI:000347454800008
%N 12
%P art. 124007 [9 ]
%R 10.1088/1748-9326/9/12/124007
%U https://www.documentation.ird.fr/hor/fdi:010063643
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers17-08/010063643.pdf
%V 9
%W Horizon (IRD)
%X Unprecedented wet conditions are reported in the 2014 summer (December-March) in Southwestern Amazon, with rainfall about 100% above normal. Discharge in the Madeira River (the main southern Amazon tributary) has been 74% higher than normal (58 000 m(3) s(-1)) at Porto Velho and 380% (25 000 m(3) s(-1)) at Rurrenabaque, at the exit of the Andes in summer, while levels of the Rio Negro at Manaus were 29.47 m in June 2014, corresponding to the fifth highest record during the 113 years record of the Rio Negro. While previous floods in Amazonia have been related to La Nina and/or warmer than normal tropical South Atlantic, the 2014 rainfall and flood anomalies are associated with warm condition in the western Pacific-Indian Ocean and with an exceptionally warm Subtropical South Atlantic. Our results suggest that the tropical and subtropical South Atlantic SST gradient is a main driver for moisture transport from the Atlantic toward south-western Amazon, and this became exceptionally intense during summer of 2014.
%$ 062 ; 032