@article{fdi:010050748, title = {{R}elationship between rainfall and vegetation indexes in {B}urkina {F}aso: a case study of the {N}akambe basin}, author = {{D}iello, {P}ierre and {M}ah{\'e}, {G}il and {P}aturel, {J}ean-{E}mmanuel and {D}ezetter, {A}lain and {D}elclaux, {F}ran{\c{c}}ois and {S}ervat, {E}ric and {O}uattara, {F}.}, editor = {}, language = {{ENG}}, abstract = {{T}his work deals with the problem of the use of remote sensing data derived from {NOAA}/{AVHRR} observations for monitoring the {W}est {A}frican {S}ahel climatic variability. {NDVI} is widely used in hydrological and climatological research, and in the study of global climatic changes. {T}he relationships between {NDVI} and climatic parameters are not well established yet and are the focus of many studies. {T}he relationships between {NDVI} and rainfall were studied at a 10-day time step in the {N}akambe {R}iver basin in {B}urkina {F}aso in the {S}ahelo-{S}udanian area over the years 1982-1999. {G}ood correlations were found in the annual evolution of these two variables. {T}he statistical analysis shows a significant relationship between {NDVI} and the sum of the annual rainfall with determination coefficients greater than 0.80. {A}t the spatial scale of 0.5 degrees x 0.5 degrees, the determination coefficient ranges from 0.91 to 0.96. {I}t was also found that the {NDVI} is a good indicator of the determination of the beginning and the end of the rainy season. {I}t gives reasonably good results in comparison with the other methods commonly used in the study region.}, keywords = {{B}urkina {F}aso ; vegetation indices ; {NDVI} {AVHRR} ; rainfall ; rainy season ; climatic variability}, booktitle = {}, journal = {{H}ydrological {S}ciences {J}ournal {J}ournal {D}es {S}ciences {H}ydrologiques}, volume = {50}, numero = {2}, pages = {207--221}, ISSN = {0262-6667}, year = {2005}, DOI = {10.1623/hysj.50.2.207.61797}, URL = {https://www.documentation.ird.fr/hor/fdi:010050748}, }