Publications Scientifiques

[ Article ] Analysis of climate extreme indices over the Komadugu-Yobe basin, Lake Chad region: Past and future occurrences

Date de soumission: 04-02-2021
Année de Publication: 2019
Entité/Laboratoire Laboratoire d'Hydrology Apliquee (LHA)
Document type : Article
Discipline(s) : Hydrologie
Titre Analysis of climate extreme indices over the Komadugu-Yobe basin, Lake Chad region: Past and future occurrences
Auteurs LAWIN AGNIDÉ EMMANUEL [2], ADEYERI Oluwafemi Ebenezer [1], LAUX Patrick [3], ISHOLA K. A. [4], Ige S. O. [5],
Journal: Weather and Climate Extremes
Catégorie Journal: Internationale
Impact factor: 0
Volume Journal: 23
Resume This study investigates trends of climate extreme indices in the Komadugu-Yobe Basin (KYB) based on observed data of the period 1971–2017 as well as regional climate model (RCM) simulations for the historical period (1979–2005), the near future (2020–2050), and the far future (2060–2090). In order to correct change points in the time historical series, the Adapted Caussinus Mestre Algorithm for homogenising Networks of Temperature series homogeneity test is used. The magnitude of the linear trends is estimated using the Sen's slope estimator and Mann-Kendall's test is performed to check the statistical significance of the trends. Future trends are assessed using the ensemble mean of eight regional climate model data under two emission scenarios, provided by the Coordinated Regional Climate Downscaling Experiment (CORDEX). Therefore, the projected rainfall and temperature have been corrected for biases by using empirical Quantile Mapping. In the observations, warm spell duration, warm day-, and warm night frequencies exhibit statistically significant positive trends. Although there is a positive trend in the annual total rainfall, the number of consecutive wet (dry) days decreases (increases). The future climate also shows a continuing positive trend in the temperature extreme indices as well as more frequent extreme rainfall events. Therefore, it is pertinent for decision-makers to develop suitable adaptation and mitigating measures to combat climate change in the Basin
Mots clés Climate extreme indices, Linear trends, Bias correction, Komadugu-Yobe basin, Lake Chad region.
Pages 1 - 21
Fichier (PDF)

Publications par entité

  • Centre de Formation et de Recherche en matière de Population (CEFORP) (21)
  • Centre Interfacultaire de Formation et de Recherche en Environnement pour le Développement Durable (CIFRED) (43)
  • Chaire Internationale en Physique Mathématique et Applications (CIPMA-Chaire UNESCO) (45)
  • Ecole Doctorale Pluridisciplinaire <<Espaces, Culture et Développement>> (0)
  • Ecole Nationale d'Administration et de Magistrature (ENAM) (72)
  • Ecole Nationle d'Economie Appliquée et de Management (88)
  • Ecole Normale Supérieure (35)
  • Ecole Polytechnique d'Abomey-Calavi (EPAC) (1123)
  • Faculté de droit et de Science Politique (FADESP) (109)
  • Faculté des Lettres et Sciences Humaines (FLASH) (1376)
  • Faculté des Lettres, Langues, Arts et Communications (FLLAC) (0)
  • Faculté des Sciences Agronomiques (1906)
  • Faculté des Sciences de la Santé (FSS) (2213)
  • Faculté des Sciences Economiques et de Gestion (FASEG) (191)
  • Faculté des Sciences et Techniques (FAST) (1081)
  • Faculté des Sciences Humaines et Sociales (FASHS) (70)
  • Institut de Formation et de Recherche en Informatique (IFRI) (76)
  • Institut de Géographie de l'Aménagement du territoire et de l'Environnement (IGATE) (0)
  • Institut de Mathématiques et de Sciences Physiques (IMSP) (124)
  • Institut National de l'Eau (INE) (28)
  • Institut National des Métiers d'Art d'Archéologie et de la Culture (INMAAC) (11)
  • Institut National Médico Sanitaire ( INMeS) (0)
  • Institut Régional de Santé Publique (IRSP) (84)

Publications par sexe

  • Femme( 1395 )
  • Homme (