Hydroclimatic variability in Tomi at Sibut, Gribingui at Kaga-Bandoro and Fafa at Bouca basins, in the Central African Republic
-
Published:2020-09-16
Issue:
Volume:383
Page:79-84
-
ISSN:2199-899X
-
Container-title:Proceedings of the International Association of Hydrological Sciences
-
language:en
-
Short-container-title:Proc. IAHS
Author:
Nguimalet Cyriaque Rufin, Orange DidierORCID
Abstract
Abstract. The research of ruptures on rainfall and discharge serial
data from 1950 to 1995 of three small catchments (from 2000 to
6000 km2) of the Central African Republic, at the boundary between Chad and
Congo basins, has shown a high spatial variability. The rupture observed in
1970 at the subcontinental scale, which started the drought period in West
and Central Africa, is observed only on the Northward basin, the driest.
Then it was difficult to compare the hydroclimatic periods from a basin to
another one. However, all the studied basins have shown a degradation of the
hydrological regime from the end of the 1980s onward, with a severe level
since the end of 1980s. The depletion coefficients have the same range for
the 3 studied basins than for the Ubangi River basin, widening the drought
impact.
Publisher
Copernicus GmbH
Reference18 articles.
1. Ardoin-Bardin, S., Dezetter, A., Servat, E., Paturel, J. E., Mahé, G.,
Niel, H., and Dieulin, C.: Using general circulation model
outputs to assess impacts of climate change on runoff for large hydrological
catchments in West Africa, Hydrolog. Sci. J., 54, 77–89, 2009. 2. Conway, D. P., Persechino, A., Ardoin-Bardin, S., Hamandawana, H.,
Dieulin, C., and Mahé, G.: Rainfall and river flow variability
in sub-Saharan Africa during the 20th century, J. Hydrometeorol., 10,
41–59, 2009. 3. Fadika, V., Goula, B. T. A., Kouassi, F. W., Doumouya, I., Koffi, K., Kagamate,
B., Savane, I., and Srohorou, B.: Variabilité interannuelle et
saisonnière de l'écoulement de quatre cours d'eau de l'Ouest
côtier de la Côte d'Ivoire (Tabo, Dodo, Néro, San Pédro)
dans un contexte de baisse de la pluviométrie en Afrique de l'Ouest, Eur. J. Sci. Res., 21, 406–418, 2008. 4. Goula, B. T. A., Savané, I., Konan, B., Fadika, V., and Kouadio, G. B.:
Impact de la variabilité climatique sur les ressources hydriques des
bassins de N'Zo et N'Zi en C. I. (Afrique tropicale humide), VertigO, 7, 1–12,
2006. 5. Kouassi, K. M., Kouassi, K. L., Lorougnon, G. D. J., Yao, K. B.,
Mélédjé, N. H., Biemi, J., Lasm, T., and Rouché, N.:
Variabilité des extrêmes pluviométriques sur le bassin versant
de la rivière Bia (Sud-Est, Cote d'Ivoire), Eur. J. Sci. Res., 14,
134–147, 2018.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|