Evolution des intensites maximales annuelles des pluies horaires en Côte d'Ivoire

Soro, Gbombélé; Goula, Bi Tié Albert; Kouassi, F. W.; Srohourou, Bernard

doi:10.4314/aga.v22i1.62314

Cited by 3 publications

(9 citation statements)

References 29 publications

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“…For Bacharou et al (2015), Jenkinson's law appears more suitable for the southern zone, while Gumbel's law is better adapted to the northern zone and mountainous regime of Benin. Thus, the findings of the present research are partially confirmed by those of Ague & Afouda (2015), Bacharou et al (2015), Bacharou et al (2013), andSoro et al (2010).…”

Section: Discussionsupporting

confidence: 89%

“…These findings are in agreement with those of Puech & Chabi-Gonni (1984) in Benin, and they corroborate the results obtained in Cô te-d'Ivoire by Kouassi et al (2018) and in Batna, Algeria, by Houichi (2017). However, this statistical approach, based solely on the Gumbel law and commonly used in Benin, is not adequate for the annual rainfall maxima in the Ouémé watershed, as noted by Soro et al (2010). The Generalized Extreme Value (GEV) law would be more appropriate for the south, and the Gumbel law for the north of the Ouémé basin.…”

Section: Discussionmentioning

confidence: 99%

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Intensity-Duration-Frequency Curves for Flood Prevention in the Republic of Benin

Attogouinon,

Lawin,

Akpovi

et al. 2024

Idn. J. Earth Sci.

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In this research, hourly rainfall recorded at 4 synoptic stations in the Republic of Benin over the period from 2006 to 2019 was used to produce intensity-duration-frequency (IDF) curves. The aim is to determine daily rainfall heights of rare frequency and to establish intensity-duration curves for various recurrence periods. To achieve this, a frequency analysis of rainfall data was carried out using the Gumbel law more commonly used in the sub-region. IDF curves were constructed on the basis of extreme rainfall events in short observation series. R software was used to process the data. The results show a drop in the maximum annual intensity of short-duration rainfall at all stations. The lack of data sets for extreme rainfall values for short durations and sufficiently long reference periods underlines the importance of this study. It should be noted, however, that these results are not sufficient to establish a relationship between the gradual variations observed and the phenomenon of climate change.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Intensity-Duration-Frequency Curves for Flood Prevention in the Republic of Benin

Attogouinon,

Lawin,

Akpovi

et al. 2024

Idn. J. Earth Sci.

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“…[2014] obtained the same result in their study on the regional frequency analysis of maximum daily annual precipitation in the Algerian river basin. SORO [2011] also noted the increasing discrepancies between quantiles in these studies on statistical modelling of extreme rainfall in Ivory Coast.…”

Section: Discussionmentioning

confidence: 90%

“…They are considered satisfactory because, according to QUENTIN [2016], when the study variables are mostly independent, the statistical laws used in hydrology can be applied to the study data. However, SORO [2011] has shown that the presence of dependence in a rainfall data set seems to considerably disturb the statistical tests by introducing apparent trends.…”

Section: Discussionmentioning

confidence: 99%

“…This method were used in this study and is based on the behaviour of values observed beyond a given threshold. It consists of defining a threshold and then choosing rainfall events greater than or equal to this threshold, while taking into account the independence constraints to avoid choosing the same rainfall event several times [SORO 2011].…”

Section: Extraction Of the Durations Of Consecutive Rainy Episodes Gr...mentioning

confidence: 99%

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Journal of Water and Land Development

Konin,

N’go,

Soro

et al. 2021

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Data rescue and valorization of old climatological data – application to rainfall data in Burkina Faso and Ivory Coast using NUNIEAU software

Paturel,

Kouacou,

Lohou

et al. 2024

Proc. IAHS

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Abstract. In 2011, the XVI World Meteorological Congress Resolution 16 gives priority to the rescue and digitization of climate archives and to promote global and regional initiatives to collaborate on DARE (data rescue) and the exchange of scientific knowledge and related technological advances. The Congress urged Members to make every effort to prevent the deterioration of climate-relevant data and to make these data available to support climate change analyses and relevant climate services. In the framework of operational and scientific research actions around the updating of hydrological standards in West Africa (Actualisation des Normes hydrologiques en Afrique de l'Ouest – ActNAO Project) and in response to the WMO call, we used the NUNIEAU software (NUmérisation de NIveaux d'EAU en mer ou en rivières – free software from CEREMA) which allows the digitization of different types of paper documents by automatic recognition. This software has been used on rainfall pluviograms in Burkina Faso and Côte d'Ivoire. The use of this tool allows rainfall analysis on intraday time steps, a time step that is very useful for the knowledge and management of flash-flood events in small basins, especially urban basins. Illustrated by a few scientific results, access to these data, which remains very limited in West Africa, opens up fields of analysis that are not only disciplinary but also, and above all, inter or transdisciplinary.

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Evolution des intensites maximales annuelles des pluies horaires en Côte d'Ivoire

Cited by 3 publications

References 29 publications

Intensity-Duration-Frequency Curves for Flood Prevention in the Republic of Benin

Intensity-Duration-Frequency Curves for Flood Prevention in the Republic of Benin

Journal of Water and Land Development

Data rescue and valorization of old climatological data – application to rainfall data in Burkina Faso and Ivory Coast using NUNIEAU software

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