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Use of CHIRPS Data to Characterize Rainfall in West Africa: Case of the Poro Region in Côte d'Ivoire

Received: 16 September 2021     Accepted: 9 October 2021     Published: 21 October 2021
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Abstract

The climatic variability observed during the last decades in West Africa results in a decrease of the rainfall that influenced resources more thus in water and lively cultural the food insecurity, the desertification, the farming exodus. Him in default not less for the Coast of Ivory. So, data of stations rainfall knew a flight, but he/it is that they are limited because of their slant and their spatial cover that don't cover the whole country. A new data set combining data of satellite and stations of observation permits a better precision in the climatic variability survey. The methods of Nicholson and filter low pass of Hanning of order 2 permitted to identify the showing a deficit and excess years. In the region of Poro two climatic periods have been identified, a period of drought of 1981 to 1993 and a humid period of 1994 to 2014. For more of precision, on a daily scale, the method of number of dry consecutive days (Consecutive Dry Days) permitted to determine the episodes of drought. The decade 1981-1990 knew a strong drought with more of 70 dry days. On the other hand, the last decade 2001-2010 marks a resumption of rains. What entails a decrease of the number of dry days in the region of Poro.

Published in American Journal of Water Science and Engineering (Volume 7, Issue 4)
DOI 10.11648/j.ajwse.20210704.11
Page(s) 126-133
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Climatic Variability, Rainfall, Drought, CHIRPS, Spatial Analyst

References
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[4] DESCROIX L., NIANG A. D., PANTHOU G., BODIAN A., SANE Y., DACOSTA H., ABDOU M. M., VANDERVAERE J. P. ET QUANTIN G. (2015). Evolution récente de la pluviométrie en Afrique de l’Ouest à travers deux régions: la Sénégambie et le bassin du Niger moyen. Climatologie, 12 (2015): 25-43.
[5] FUNK C., PETERSON P., LANDSFELD M., PEDREROS D., VERDIN J., ET SHUKLA S., HUSAK G., ROWLAND J., HARRISON L., HOELL A. ET MICHAELSEN J. (2015). Les risques climatiques des précipitations infrarouges avec les stations - un nouveau record environnemental pour surveiller les extrêmes. Scientific data 2, 150066. Doi: 10.1038/sdata.2015.66 2015.
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[10] KOUAKOU E. (2011). Impacts de la variabilité climatique et du changement climatique sur les ressources en eau en Afrique de l’Ouest: Cas du bassin versant de la Comoé. Thèse Unique de Doctorat, Université d’Abobo Adjamé, 186 p.
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    Talnan Jean Honore Coulibaly, Naga Coulibaly, Kouassi Yéboua Firmin, Camara Issa. (2021). Use of CHIRPS Data to Characterize Rainfall in West Africa: Case of the Poro Region in Côte d'Ivoire. American Journal of Water Science and Engineering, 7(4), 126-133. https://doi.org/10.11648/j.ajwse.20210704.11

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    ACS Style

    Talnan Jean Honore Coulibaly; Naga Coulibaly; Kouassi Yéboua Firmin; Camara Issa. Use of CHIRPS Data to Characterize Rainfall in West Africa: Case of the Poro Region in Côte d'Ivoire. Am. J. Water Sci. Eng. 2021, 7(4), 126-133. doi: 10.11648/j.ajwse.20210704.11

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    AMA Style

    Talnan Jean Honore Coulibaly, Naga Coulibaly, Kouassi Yéboua Firmin, Camara Issa. Use of CHIRPS Data to Characterize Rainfall in West Africa: Case of the Poro Region in Côte d'Ivoire. Am J Water Sci Eng. 2021;7(4):126-133. doi: 10.11648/j.ajwse.20210704.11

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  • @article{10.11648/j.ajwse.20210704.11,
      author = {Talnan Jean Honore Coulibaly and Naga Coulibaly and Kouassi Yéboua Firmin and Camara Issa},
      title = {Use of CHIRPS Data to Characterize Rainfall in West Africa: Case of the Poro Region in Côte d'Ivoire},
      journal = {American Journal of Water Science and Engineering},
      volume = {7},
      number = {4},
      pages = {126-133},
      doi = {10.11648/j.ajwse.20210704.11},
      url = {https://doi.org/10.11648/j.ajwse.20210704.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajwse.20210704.11},
      abstract = {The climatic variability observed during the last decades in West Africa results in a decrease of the rainfall that influenced resources more thus in water and lively cultural the food insecurity, the desertification, the farming exodus. Him in default not less for the Coast of Ivory. So, data of stations rainfall knew a flight, but he/it is that they are limited because of their slant and their spatial cover that don't cover the whole country. A new data set combining data of satellite and stations of observation permits a better precision in the climatic variability survey. The methods of Nicholson and filter low pass of Hanning of order 2 permitted to identify the showing a deficit and excess years. In the region of Poro two climatic periods have been identified, a period of drought of 1981 to 1993 and a humid period of 1994 to 2014. For more of precision, on a daily scale, the method of number of dry consecutive days (Consecutive Dry Days) permitted to determine the episodes of drought. The decade 1981-1990 knew a strong drought with more of 70 dry days. On the other hand, the last decade 2001-2010 marks a resumption of rains. What entails a decrease of the number of dry days in the region of Poro.},
     year = {2021}
    }
    

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    T1  - Use of CHIRPS Data to Characterize Rainfall in West Africa: Case of the Poro Region in Côte d'Ivoire
    AU  - Talnan Jean Honore Coulibaly
    AU  - Naga Coulibaly
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    JF  - American Journal of Water Science and Engineering
    JO  - American Journal of Water Science and Engineering
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    PB  - Science Publishing Group
    SN  - 2575-1875
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    AB  - The climatic variability observed during the last decades in West Africa results in a decrease of the rainfall that influenced resources more thus in water and lively cultural the food insecurity, the desertification, the farming exodus. Him in default not less for the Coast of Ivory. So, data of stations rainfall knew a flight, but he/it is that they are limited because of their slant and their spatial cover that don't cover the whole country. A new data set combining data of satellite and stations of observation permits a better precision in the climatic variability survey. The methods of Nicholson and filter low pass of Hanning of order 2 permitted to identify the showing a deficit and excess years. In the region of Poro two climatic periods have been identified, a period of drought of 1981 to 1993 and a humid period of 1994 to 2014. For more of precision, on a daily scale, the method of number of dry consecutive days (Consecutive Dry Days) permitted to determine the episodes of drought. The decade 1981-1990 knew a strong drought with more of 70 dry days. On the other hand, the last decade 2001-2010 marks a resumption of rains. What entails a decrease of the number of dry days in the region of Poro.
    VL  - 7
    IS  - 4
    ER  - 

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Author Information
  • Laboratoire de Géosciences et Environnement, UFR des Sciences et Gestion de l’Environnement, Université Nangui Abrogoua, Abidjan, Cote d’Ivoire

  • Laboratoire de Géosciences et Environnement, UFR des Sciences et Gestion de l’Environnement, Université Nangui Abrogoua, Abidjan, Cote d’Ivoire

  • Laboratoire de Géosciences et Environnement, UFR des Sciences et Gestion de l’Environnement, Université Nangui Abrogoua, Abidjan, Cote d’Ivoire

  • Laboratoire de Géosciences et Environnement, UFR des Sciences et Gestion de l’Environnement, Université Nangui Abrogoua, Abidjan, Cote d’Ivoire

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