@article{fdi:010066088,
  title = {{C}orrection of interferometric and vegetation biases in the {SRTMGL}1 spaceborne {DEM} with hydrological conditioning towards improved hydrodynamics modeling in the {A}mazon {B}asin},
  author = {{P}inel, {S}. and {B}onnet, {M}arie-{P}aule and {D}a {S}ilva, {J}. {S}. and {M}oreira, {D}. and {C}almant, {S}t{\'e}phane and {S}atg{\'e}, {F}r{\'e}d{\'e}ric and {S}eyler, {F}r{\'e}d{\'e}rique},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n the {A}mazon basin, the recently released {SRTM} {G}lobal 1 arc-second ({SRTMGL}1) remains the best topographic information for hydrological and hydrodynamic modeling purposes. {H}owever, its accuracy is hindered by errors, partly due to vegetation, leading to erroneous simulations. {P}revious efforts to remove the vegetation signal either did not account for its spatial variability or relied on a single assumed percentage of penetration of the {SRTM} signal. {H}ere, we propose a systematic approach over an {A}mazonian floodplain to remove the vegetation signal, addressing its heterogeneity by combining estimates of vegetation height and a land cover map. {W}e improve this approach by interpolating the first results with drainage network, field and altimetry data to obtain a hydrological conditioned {DEM}. {T}he averaged interferometric and vegetation biases over the forest zone were found to be -2.0 m and 7.4 m, respectively. {C}omparing the original and corrected {DEM}, vertical validation against {G}round {C}ontrol {P}oints shows a {RMSE} reduction of 64%. {F}lood extent accuracy, controlled against {L}andsat and {JERS}-1 images, stresses improvements in low and high water periods (+24% and +18%, respectively). {T}his study also highlights that a ground truth drainage network, as a unique input during the interpolation, achieves reasonable results in terms of flood extent and hydrological characteristics.},
  keywords = {{DEM} ; {SRTMGL}1 ; {A}mazon ; vegetation ; altimetry ; floodplain ; remote sensing ; lake ; bathymetry ; {BRESIL} ; {AMAZONIE} ; {AMAZONE} {BASSIN} ; {SOLIMOES} {COURS} {D}'{EAU} ; {JANAUCA} {LAC}},
  booktitle = {},
  journal = {{R}emote {S}ensing},
  volume = {7},
  numero = {12},
  pages = {16108--16130},
  ISSN = {2072-4292},
  year = {2015},
  DOI = {10.3390/rs71215822},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066088},
}