@article{fdi:010067741,
  title = {{A} multiscale evaluation of the detection capabilities of high-resolution satellite precipitation products in {W}est {A}frica},
  author = {{G}uilloteau, {C}. and {R}oca, {R}. and {G}osset, {M}arielle},
  editor = {},
  language = {{ENG}},
  abstract = {{V}alidation studies have assessed the accuracy of satellite-based precipitation estimates at coarse scale (18 and 1 day or coarser) in the tropics, but little is known about their ability to capture the finescale variability of precipitation. {R}ain detection masks derived from four multisatellite passive sensor products [{T}ropical {A}mount of {P}recipitation with an {E}stimate of {E}rrors ({TAPEER}), {PERSIANN}-{CCS}, {CMORPH}, and {GSM}a{P}] are evaluated against ground radar data in {B}urkina {F}aso. {T}he multiscale evaluation is performed down to 2.8 km and 15 min through discrete wavelet transform. {T}he comparison of wavelet coefficients allows identification of the scales for which the precipitation fraction (fraction of space and time that is rainy) derived from satellite observations is consistent with the reference. {T}he wavelet-based spectral analysis indicates that the energy distribution associated with the rain/no rain variability throughout spatial and temporal scales in satellite products agrees well with radar-based precipitation fields. {T}he wavelet coefficients characterizing very finescale variations (finer than 40 km and 2 h) of satellite and ground radar masks are poorly correlated. {C}oarse spatial and temporal scales are essentially responsible for the agreement between satellite and radar masks. {C}onsequently, the spectral energy of the difference between the two masks is concentrated in fine scales. {S}atellite-derived multiyear mean diurnal cycles of rain occurrence are in good agreement with gauge data in {B}enin and {N}iger. {S}pectral analysis and diurnal cycle computation are also performed in the {W}est {A}frica region using the {TRMM} {P}recipitation {R}adar. {T}he results at the regional scale are consistent with the results obtained over the ground radar and gauge sites.},
  keywords = {{BENIN} ; {NIGER} ; {BURKINA} {FASO}},
  booktitle = {},
  journal = {{J}ournal of {H}ydrometeorology},
  volume = {17},
  numero = {7},
  pages = {2041--2059},
  ISSN = {1525-755{X}},
  year = {2016},
  DOI = {10.1175/jhm-d-15-0148.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010067741},
}