@article{fdi:010078633,
  title = {{M}ultiscale analysis of precipitable water vapor over {A}frica from {GPS} data and {ECMWF} analyses},
  author = {{B}ock, {O}. and {G}uichard, {F}. and {J}anicot, {S}erge and {L}afore, {J}.{P}. and {B}ouin, {M}.{N}. and {S}ultan, {B}enjamin},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his is the first climatological analysis of precipitable water vapor ({PWV}) from {GPS} data over {A}frica. {T}he data reveal significant modulations and variability in {PWV} over a broad range of temporal scales. {GPS} {PWV} estimates are compared to {ECMWF} reanalysis {ERA}40. {B}oth datasets show good agreement at the larger scales (seasonal cycle and inter-annual variability), driven by large scale moisture transport. {A}t intra-seasonal (15–40 days) and synoptic (3–10 days) scales, strong {PWV} modulations are observed from {GPS}, consistently with {ECMWF} analysis. {T}hey are shown to be correlated with convection and the passage of equatorial waves and {A}frican {E}asterly waves. {T}he high-frequency {GPS} observations also reveal a significant diurnal cycle in {PWV}, which magnitude and spectral content depends strongly on geographic location and shows a seasonal modulation. {T}he diurnal cycle of {PWV} is poorly represented in {ERA}40 reflecting weaknesses in the water cycle of global circulation models at this timescale.},
  keywords = {{BIOCLIMATOLOGIE} ; {PRECIPITATION} ; {EVAPORATION} ; {VARIATION} {SAISONNIERE} ; {VARIATION} {PLURIANNUELLE} ; {ANALYSE} {MULTIVARIABLE} ; {GPS}.{SYSTEME} {DE} {POSITIONNEMENT} {GLOBAL} ; {AFRIQUE} {DE} {L}'{OUEST}},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {34},
  numero = {},
  pages = {art. {L}09705 [6  ]},
  ISSN = {0094-8276},
  year = {2007},
  DOI = {10.1029/2006{GL}028039},
  URL = {https://www.documentation.ird.fr/hor/fdi:010078633},
}