IAHS2022-117, updated on 22 Sep 2022
IAHS-AISH Scientific Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Data rescue and valorization of old data. Application to rainfall data in Burkina Faso and Ivory Coast using NUNIEAU software

Jean-Emmanuel Paturel1, Berenger Kouacou2, Franck Lohou2, Frédéric Pons3, Bernard Dje2, Naky Coulibaly2, Harouna Karambiri4, Valérie Borrell5, Andrew Ogilvie6, and Eric Servat7
Jean-Emmanuel Paturel et al.
  • 1HydroSciences Montpellier, Institut de Recherche pour le Développement, France (jean-emmanuel.paturel@ird.fr)
  • 2DMN, SODEXAM, Abidjan, Côte d'Ivoire
  • 3CEREMA, Aix-en-Provence
  • 42iE, Ouagadougou, Burkina Faso
  • 5G-Eau, Univ. Montpellier, IRD, INRAE, Montpellier, France
  • 6G-Eau, IRD, Univ. Montpellier, INRAE, Dakar, Sénégal
  • 7ICIREWARD, Montpellier, France

In 2007, the WMO Executive Council, at its 66th session, recalled Resolution 16, which 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 Council 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.

Within the framework of operational and scientific research actions around the updating of hydrological standards in West Africa (ActNAO project)  and in response to the call of the WMO, we used the NUNIEAU software (NUmérisation de NIveaux d'EAU en mer ou en rivières - CEREMA's free software) which allows the digitization of all types of paper documents by automatic recognition. This software has been used on rainfall maps in Burkina Faso and Ivory Coast. The use of this tool allows rainfall analysis on an intraday time step, a time step that is very useful for the sizing of structures and networks, the knowledge and management of flash floods in small basins, particularly urban basins, and flood prevention actions...

For example, Intensity-Duration-Frequency curves were reviewed and compared to old ones in order to follow the evolution of rainy events in a context of climate change in Burkina Faso and Côte d’Ivoire. The tendency would be an intensification of short duration rainfall.

This product is intended to be disseminated and dedicated training courses have been organized for researchers and stakeholders in the South and North.


How to cite: Paturel, J.-E., Kouacou, B., Lohou, F., Pons, F., Dje, B., Coulibaly, N., Karambiri, H., Borrell, V., Ogilvie, A., and Servat, E.: Data rescue and valorization of old data. Application to rainfall data in Burkina Faso and Ivory Coast using NUNIEAU software, IAHS-AISH Scientific Assembly 2022, Montpellier, France, 29 May–3 Jun 2022, IAHS2022-117, https://doi.org/10.5194/iahs2022-117, 2022.