Research ArticleOpen AccessGoogle Scholar indexed
Study of the Spatio-Temporal Variability of Rainfall in the Nouhao Sub-Basin
Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
Department of Physics and Chemistry, Laboratory of Analytical Chemistry, Space and Energy Physics (LACAPSE), Norbert ZONGO University, Koudougou, Burkina Faso
Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
International Program Department of WaterAid, Ouagadougou, Burkina Faso
Department of Physics and Chemistry, Institute of Sciences, Ouagadougou, Burkina Faso.
- 1 Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
- 2 Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
- 3 Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
- 4 Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
- 5 Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
- 6 Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
- 7 Department of Physics and Chemistry, Laboratory of Analytical Chemistry, Space and Energy Physics (LACAPSE), Norbert ZONGO University, Koudougou, Burkina Faso
- 8 Department of Physics, Materials and Environment Laboratory (LAME), Joseph KI ZERBO University, Ouagadougou, Burkina Faso
- 9 International Program Department of WaterAid, Ouagadougou, Burkina Faso
- 10 Department of Physics and Chemistry, Institute of Sciences, Ouagadougou, Burkina Faso.
Journal of Water Resource and Protection·Volume 17 (2025)·Pages 563–576·Published 18 August 2025·DOI10.4236/jwarp.2025.178029
Copy link · social · email
Abstract
Wide variations characterize rainfall trends in the Sahelian zone. Indeed, this zone is considered to be one of the most affected by climatic fluctuations. This study aims to analyze the spatio-temporal variability of rainfall in the Nouhao sub-basin. To this end, data on annual rainfall from 1981 to 2022 were collected from rainfall stations located in the basin, namely Dialgaye, Tenkodogo, Sangha, and Ouargaye in the Centre-Est region of Burkina Faso. Rainfall indices were calculated to identify years with wet, dry or normal periods. Additionally, the Pettitt test was used to detect break years in the rainfall data. The Mann-Kendall test was used to assess any trends in the rainfall series. The results show that rainfall has been highly variable, with a general upward trend. In addition, the Pettitt test identified rainfall breaks in 1990 at Ouargaye and Sangha, in 2003 at Dialgaye and in 2004 at Tenkodogo. The rainfall surplus obtained from the break years ranges from 12% to 21%, with an average value of 16%. The highest surpluses were recorded in Sangha (16%) and Tenkodogo (21%). The spatial distribution of mean annual rainfall over the period 1981-2020 reveals significant variations, marked by a shift in isohyets from northwest to southeast.
KeywordsClimate VariabilitySpatio-TemporalRainfallBreakTrendNouhao Sub-Basin
- Ardoin, S., Niel, H., Servat, E., Dezetter, A., Boyer, J.F., Mahe, G. and Paturel, J.E. (2003) Analyse de la persistance de la sécheresse Caractérisation de la situation de la décennie 1990. IAHS Publication, 223-228.
- Paturel, J.E., Servat, E., Delattre, M.O. and Lubes-Niel, H. (1998) Analyse de séries pluviométriques de longue durée en afrique de l’ouest et centrale non sahélienne dans un contexte de variabilité climatique. Hydrological Sciences Journal , 43, 937-946. https://doi.org/10.1080/02626669809492188
- Nicholson, S.E. (1994) Recent Rainfall Fluctuations in Africa and Their Relationship to Past Conditions over the Continent. The Holocene , 4, 121-131.
- Servat, E., Paturel, J.E., Kouame, B., Travaglio, M., Ouedraogo, M., Boyer, J.F., Lubes-Niel, H., Fritsch, J.M., Masson, J.M. and Marieu, B. (1998) Identification, caractérisation et conséquences d’une variabilité hydrologique en afrique de l’ouest et centrale. IAHS Publication, 323-338.
- Ozer, P., Hountondji, Y.C. and Laminou Manzo, O. (2009) Évolution des caractéristiques pluviométriques dans l’est du niger de 1940 à 2007. Geo - Eco - Trop , 33, 11-30.
- Lienou, G., Mahe, G., Paturel, J.E., Servat, E., Sighomnou, D., Ekodeck, G.E., et al. (2008) Evolution des régimes hydrologiques en région équatoriale camerounaise: Un impact de la variabilité climatique en Afrique équatoriale? Hydrological Sciences Journal , 53, 789-801. https://doi.org/10.1623/hysj.53.4.789
- Fossou, R.M.N., Douagui, A., Kouassi, A.K., Aba, W.G., and Gone, L.D. (2022) Variabilité de la pluviométrie et son incidence sur les ressources en eau souterraines: Cas du département de tiassalé, Côte d’Ivoire. Revue Ivoirienne des Sciences et Technologie , 39, 128-146.
- Sambou, S., Dacosta, H. and Paturel, J. (2018) Variabilité spatio-temporelle des pluies de 1932 à 2014 dans le bassin versant du fleuve Kayanga/Gêba (République de Guinée, Sénégal, Guinée-Bissau). Physio - G éo , 12, 61-78.
- Yuan, Y., Yan, D., Yuan, Z., Yin, J. and Zhao, Z. (2019) Spatial Distribution of Precipitation in Huang-Huai-Hai River Basin between 1961 to 2016, China. International Journal of Environmental Research and Public Health , 16, Article 3404. https://doi.org/10.3390/ijerph16183404
- Narcise Kabore, P., Ouedraogo, A., Sanon, M., Yaka, P. and Some, L. (2017) Caractérisation de la variabilité climatique dans la region du centre-nord du burkina faso entre 1961 et 2015. Climatologie , 14, 82-95. https://doi.org/10.4267/climatologie.1268