@article{fdi:010077411,
  title = {{R}egional hydro-climatic changes in the {S}outhern {A}mazon {B}asin ({U}pper {M}adeira {B}asin) during the 1982-2017 period},
  author = {{E}spinoza, {J}. {C}. and {S}orensson, {A}. {A}. and {R}onchail, {J}. and {M}olina-{C}arpio, {J}. and {S}egura, {H}. and {G}utierrez-{C}ori, {O}. and {R}uscica, {R}. and {C}ondom, {T}homas and {W}ongchuig-{C}orrea, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}tudy region: {U}pper {M}adeira {B}asin (975,500 km(2)) in {S}outhern {A}mazonia, which is suffering a biophysical transition, involving deforestation and changes in rainfall regime. {S}tudy focus: {T}he evolution of the runoff coefficient ({R}c: runoff/rainfall) is examined as an indicator of the environmental changes (1982-2017). {N}ew hydrological insights for the region: {A}t an annual scale, the {R}c at {P}orto {V}elho station declines while neither the basin-averaged rainfall nor the runoff change. {D}uring the low-water period {R}c and runoff diminish while no changes are observed in rainfall. {T}his cannot be explained by increase of evapotranspiration since the basin-averaged actual evapotranspiration decreases. {T}o explain the decrease of {R}c, a regional analysis is undertaken. {W}hile the characteristic rainfall-runoff time-lag ({CT}) at {P}orto {V}elho basin is estimated to 60 days, {CT} is higher (65-75 days) in the south and lower (50 days) over the {A}mazon-{A}ndes transition regions. {I}t is found that 1) the southern basin (south of 14 degrees {S}) best explains low-level {P}orto {V}elho runoff, 2) in the south, rainfall diminishes and the frequency of dry days increases. {B}oth features explain the diminution of the runoff and the {R}c in {P}orto {V}elho. {M}oreover, the increasing dryness in the south compensates for the rainfall and frequency of wet days (> 10 mm) increase north of 14 degrees {S} and explains the lack of basin-averaged rainfall trends of the upper {M}adeira basin.},
  keywords = {{R}unoff coefficient ; {R}ainfall trends ; {A}tmosphere and land surface interactions ; {PEROU} ; {BOLIVIE} ; {BRESIL} ; {AMAZONE} {BASSIN} ; {MADEIRA} {BASSIN}},
  booktitle = {},
  journal = {{J}ournal of {H}ydrology : {R}egional {S}tudies},
  volume = {26},
  numero = {},
  pages = {art. 100637 [17 p.]},
  year = {2019},
  DOI = {10.1016/j.ejrh.2019.100637},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077411},
}