@article{fdi:010063643, title = {{T}he extreme 2014 flood in south-western {A}mazon basin : the role of tropical-subtropical {S}outh {A}tlantic {SST} gradient}, author = {{E}spinoza, {J}. {C}. and {M}arengo, {J}. {A}. and {R}onchail, {J}. and {C}arpio, {J}. {M}. and {F}lores, {L}. {N}. and {G}uyot, {J}ean-{L}oup}, editor = {}, language = {{ENG}}, abstract = {{U}nprecedented wet conditions are reported in the 2014 summer ({D}ecember-{M}arch) in {S}outhwestern {A}mazon, with rainfall about 100% above normal. {D}ischarge in the {M}adeira {R}iver (the main southern {A}mazon tributary) has been 74% higher than normal (58 000 m(3) s(-1)) at {P}orto {V}elho and 380% (25 000 m(3) s(-1)) at {R}urrenabaque, at the exit of the {A}ndes in summer, while levels of the {R}io {N}egro at {M}anaus were 29.47 m in {J}une 2014, corresponding to the fifth highest record during the 113 years record of the {R}io {N}egro. {W}hile previous floods in {A}mazonia have been related to {L}a {N}ina and/or warmer than normal tropical {S}outh {A}tlantic, the 2014 rainfall and flood anomalies are associated with warm condition in the western {P}acific-{I}ndian {O}cean and with an exceptionally warm {S}ubtropical {S}outh {A}tlantic. {O}ur results suggest that the tropical and subtropical {S}outh {A}tlantic {SST} gradient is a main driver for moisture transport from the {A}tlantic toward south-western {A}mazon, and this became exceptionally intense during summer of 2014.}, keywords = {extreme flood ; {A}mazon basin ; {M}adeira river ; {B}olivian {A}mazon ; {B}razilian {A}mazon ; {AMAZONE} {BASSIN} ; {BOLIVIE} ; {BRESIL} ; {ATLANTIQUE} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{E}nvironmental {R}esearch {L}etters}, volume = {9}, numero = {12}, pages = {art. 124007 [9 ]}, ISSN = {1748-9326}, year = {2014}, DOI = {10.1088/1748-9326/9/12/124007}, URL = {https://www.documentation.ird.fr/hor/fdi:010063643}, }