@article{fdi:010044042, title = {{E}volution des r{\'e}gimes hydrologiques en r{\'e}gion {\'e}quatoriale camerounaise : un impact de la variabilit{\'e} climatique en {A}frique {\'e}quatoriale ? = {E}volution of hydrological regimes in the equatorial area of {C}ameroon : an impact of climate variability in equatorial {A}frica?}, author = {{L}ienou, {G}. and {M}ah{\'e}, {G}il and {P}aturel, {J}ean-{E}mmanuel and {S}ervat, {E}ric and {S}ighomnou, {D}. and {E}kodeck, {G}. {E}. and {D}ezetter, {A}lain and {D}ieulin, {C}laudine}, editor = {}, language = {{FRE}}, abstract = {{A}nalysis of the spatio-temporal variability of rainfall amounts, discharge and runoff coefficients, for monthly, seasonal and annual time steps in equatorial south {C}ameroon, reveals that annual values of rainfall and discharge have decreased during the years of greatest drought (1972-1973 and 1983-1984). {T}he most significant climatic change is a modification of rainfall regime during the dry seasons, which led to a change ill the annual hydrological cycle. {T}he decrease in rainfall during the dry season in {D}ecember-{F}ebruary generates a decrease in the runoff coefficients during the subsequent short rainy season ({M}arch-{J}une). {C}onversely, although the corresponding rainfall has not changed much during the rainy season in {S}eptember-{N}ovember, the discharge has increased, probably due to the fact that rainfall during the short dry season ({J}uly and {A}ugust) has been much higher for several decades. {T}his is assumed to indicate a change in climate in southwest {C}ameroon, also evident in {G}abon and {C}ongo. {O}ver the {K}ienke basin, the progressive disappearance of he short dry season in {J}uly-{A}ugust has resulted in a tendency for the two rainy seasons to merge into one.}, keywords = {{E}quatorial climate ; {C}limatic variability ; {C}ameroon ; {R}ainfall ; {D}ischarge}, booktitle = {}, journal = {{H}ydrological {S}ciences {J}ournal-{J}ournal des {S}ciences {H}ydrologiques}, volume = {53}, numero = {4}, pages = {789--801}, ISSN = {0262-6667}, year = {2008}, DOI = {10.1623/hysj.53.4.789}, URL = {https://www.documentation.ird.fr/hor/fdi:010044042}, }