@article{PAR00003120,
  title = {{I}nterannual variations of river water storage from a multiple satellite approach : a case study for the {R}io {N}egro {R}iver basin - art. no. {D}21104},
  author = {{F}rappart, {F}. and {P}apa, {F}. and {F}amiglietti, {J}. {S}. and {P}rigent, {C}. and {R}ossow, {W}. {B}. and {S}eyler, {F}r{\'e}d{\'e}rique},
  editor = {},
  language = {{ENG}},
  abstract = {{S}patiotemporal variations of water volume over inundated areas located in a large river basin have been determined using combined observations from a multisatellite inundation data set, the {TOPEX}/{POSEIDON} ({T}/{P}) altimetry satellite, and in situ hydrographic stations for the water levels over rivers and floodplains. {W}e computed maps of monthly surface water volume change over the period of common availability of {T}/{P} and the multisatellite data (1993-2000). {T}he basin of the {N}egro {R}iver, the largest tributary in terms of discharge to the {A}mazon {R}iver, was selected as a test site. {A} strong seasonal signal is observed with minima in {O}ctober and maxima in {J}une. {A} strong interannual component is also present, particularly important during {ENSO} years. {T}he surface water change was estimated to be 167 +/- 39 km(3) between {O}ctober 1995 (low water) and {J}une 1996 (high water). {T}his result is consistent with previous estimates obtained for the 1995-1996 hydrological cycle over the same area using the {JERS} mosaic data. {T}he surface water volume change is then compared to the total water volume change inferred from the {GRACE} satellite for an average annual cycle. {T}he difference between the surface storage change and the total storage change derived from {GRACE} was computed to estimate the contribution of the soil moisture and groundwater to the total storage change. {O}ur study supports the hypothesis that total water storage is almost equally partitioned between surface water and the combination of soil moisture and groundwater for the {N}egro {R}iver basin. {T}he water volume changes are also evaluated using in situ discharge measurements and the {GPCP} precipitation product (correlation of 0.61). {T}he results show the high potential for the new technique to provide valuable information to improve our understanding of large river basin hydrologic processes.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch - {A}tmospheres},
  volume = {113},
  numero = {{D}21},
  pages = {21104},
  ISSN = {0148-0227},
  year = {2008},
  DOI = {10.1029/2007jd009438},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00003120},
}