@article{fdi:010065805,
  title = {{C}an daily meteorological measurement of near-surface wind detect climate changes in the {S}ahel ({SE} {N}iger, 1950-1992) ?},
  author = {{H}assane, {B}. and {D}urand, {A}. and {G}arba, {Z}. and {D}ieppois, {B}. and {R}ajot, {J}ean-{L}ouis and {S}ebag, {D}avid and {D}iedhiou, {A}rona and {N}gounou {N}gatcha, {B}. and {T}raor{\'e}, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{U}sing three daily measurements of wind speed and direction from synoptic weather station data in {SE} {N}iger, we examined the diurnal, seasonal and interannual time-scale of {S}ahel climate variability between 1950 and 1992. {T}he seasonal wind patterns are closely related to the temperatures and {W}est {A}frican monsoon dynamics. {T}he transitions between the two seasons are marked by an important increase in calms (wind speed < 0.5 m s-1). {S}uch variations are related to meridional shifts of the {I}nter {T}ropical {D}iscontinuity ({ITD}) and {I}nter {T}ropical {C}onvergence {Z}one ({ITCZ}). {I}nterannual fluctuations of annual wind speeds are consistent with {S}ahel rainfall variability. {D}ry years, such as in 1969-1973 and 1983-1986 periods, are associated with negative anomalies in wind speeds mainly due to an increase in calms and dry conditions. {N}evertheless, we note several differences: the first period is associated with a yearly increase in the annual mean speed, while the second is associated with a decrease. {D}ifferences could be related to changes in atmospheric circulation, especially regarding the strength and latitudinal position of {T}ropical and {A}frican {E}asterly jets.},
  keywords = {{VENT} ; {VITESSE} ; {CIRCULATION} {ATMOSPHERIQUE} ; {MESURE} ; {DONNEES} ; {METHODOLOGIE} ; {VARIATION} {JOURNALIERE} ; {PRECIPITATION} ; {VARIATION} {INTERANNUELLE} ; {VARIATION} {SAISONNIERE} ; {SECHERESSE} ; {CHANGEMENT} {CLIMATIQUE} ; {MOUSSON} ; 1950 1992 ; {ZONE} {SAHELIENNE} ; {NIGER} ; {TCHAD} {LAC} {REGION}},
  booktitle = {},
  journal = {{J}ournal of {A}rid {E}nvironments},
  volume = {124},
  numero = {},
  pages = {91--101},
  ISSN = {0140-1963},
  year = {2016},
  DOI = {10.1016/j.jaridenv.2015.07.014},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065805},
}