@article{fdi:010075193,
  title = {{Q}uantifying the contribution of the {M}egha-{T}ropiques mission to the estimation of daily accumulated rainfall in the {T}ropics},
  author = {{R}oca, {R}. and {T}aburet, {N}. and {L}orant, {E}. and {C}hambon, {P}. and {A}lcoba, {M}atias and {B}rogniez, {H}. and {C}loche, {S}. and {D}ufour, {C}. and {G}osset, {M}arielle and {G}uilloteau, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}atellite estimation of accumulated precipitation is an important facet of the study of the tropical water cycle. {A}n advanced data merging approach using infrared geostationary imagery and microwave constellation based instantaneous rain rate estimates has been implemented in the framework of the {M}egha-{T}ropiques and {G}lobal {P}recipitation {M}easurements missions. {T}he {T}ropical {A}mount of {R}ainfall with {E}stimation of {ER}ors ({TAPEER}) algorithm has been tailored to account for the loss of the {MADRAS} conical scanning radiometer by using the {SAPHIR} sounder rainfall detection capability, thanks to a novel two-constellation implementation of the algorithm. {A} new bias correction module based on the {TRMM} {PR} observations is also presented. {T}he performances of this new version of the product are reviewed with emphasis on {W}est {A}frica. {I}n particular, using data-denial experiments, the contribution of {SAPHIR} data to the rainfall daily accumulation is quantified for various configurations of the microwave constellation and various algorithmic parameter selections. {T}he results show that the daily accumulation statistics are well improved when {SAPHIR} is taken into the constellation. {T}he improvements can be quantified using bulk statistics but are more evident following a frequency analysis. {T}he pattern of the impact is a complex convolution of rainfall occurrence and of the {M}egha-{T}ropiques mission original sampling. {O}ver the 20 degrees {N}-20 degrees {S} belt, in zonal mean, the inclusion of {SAPHIR} data alters the daily accumulation substantially (more than 50% of the daily accumulation) more than 10% of the time and more than 20% when conditioned upon rainfall. {U}nder both metrics, the improvement is majored in the 12 degrees-17 degrees latitude band where the {M}egha-{T}ropiques mission sampling is at its maximum.},
  keywords = {global precipitation mission constellation ; satellite estimate of precipitation ; tropical water and energy budget ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{Q}uarterly {J}ournal of the {R}oyal {M}eteorological {S}ociety},
  volume = {144},
  numero = {1},
  pages = {49--63},
  ISSN = {0035-9009},
  year = {2018},
  DOI = {10.1002/qj.3327},
  URL = {https://www.documentation.ird.fr/hor/fdi:010075193},
}