@article{fdi:010068134,
  title = {{M}onitoring water turbidity and surface suspended sediment concentration of the {B}agre {R}eservoir ({B}urkina {F}aso) using {MODIS} and field reflectance data},
  author = {{R}obert, {E}. and {G}rippa, {M}. and {K}ergoat, {L}. and {P}inet, {S}. and {G}al, {L}. and {C}ochonneau, {G}{\'e}rard and {M}artinez, {J}ean-{M}ichel},
  editor = {},
  language = {{ENG}},
  abstract = {{M}onitoring turbidity and {S}urface {S}uspended {S}ediment {C}oncentration ({SSSC}) of inland waters is essential to address several important issues: erosion, sediment transport and deposition throughout watersheds, reservoir siltation, water pollution, human health risks, etc. {T}his is especially important in regions with limited conventional monitoring capacities such as {W}est {A}frica. {I}n this study, we explore the use of {M}oderate {R}esolution {I}maging {S}pectroradiometer data ({MODIS}, {MODO}9{Q}1 and {MYDO}9{Q}1 products, red ({R}) and near infrared ({NIR}) bands) to monitor turbidity and {SSSC} for the {B}agre {R}eservoir in {B}urkina {F}aso. {H}igh values of these parameters associated with high spatial and temporal variability potentially challenge the methodologies developed so far for less turbid waters. {F}ield measurements (turbidity, {SSSC}, radiometry) are used to evaluate different radiometric indices. {T}he {NIR}/{R} ratio is found to be the most suited to retrieve {SSSC} and turbidity for both in-situ spectoradiometer measurements and satellite reflectance from {MODIS}. {T}he spatio temporal variability of {MODIS} {NIR}/{R} together with rainfall estimated by the {T}ropical {R}ainforest {M}easuring {M}ission ({TRMM}) and altimetry data from {J}ason-2 is analyzed over the {B}agre {R}eservoir for the 2000-2015 period. {I}t is found that rain events of the early rainy season ({F}ebruary-{M}arch) through mid-rainy season ({A}ugust) are decisive in triggering turbidity increase. {S}ediment transport is observed in the reservoir from upstream to downstream between {J}une and {S}eptember. {F}urthermore, a significant increase of 19% in turbidity values is observed between 2000 and 2015, mainly for the {J}uly to {D}ecember period. {I}t is especially well marked for {A}ugust, with the central and downstream areas showing the largest increase. {T}he most probable hypothesis to explain this evolution is a change in land use, and particularly an increase in the amount of bare soils, which enhances particle transport by runoff.},
  keywords = {{M}odis ; {A}frican reservoir ; {S}urface suspended sediment concentration ; {T}urbidity ; {R}adiometry ; {W}ater color ; {BURKINA} {FASO}},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {A}pplied {E}arth {O}bservation and {G}eoinformation},
  volume = {52},
  numero = {},
  pages = {243--251},
  ISSN = {0303-2434},
  year = {2016},
  DOI = {10.1016/j.jag.2016.06.016},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068134},
}