Article Sidebar
Published:
Sep 7, 2023Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Copyright of the journal's content belongs to the Owner-association: Nigeria Meteorological Society; NmetS
Open Access article distributed under the terms of the Creative Commons License [CC BY-NC-SA 4.0]
http://creativecommons.org/licenses/by-nc-sa/4.0
Condition of use: This license lets others remix, adapt, and build upon your work non-commercially, as long as they credit the authors and license their new creations under the identical terms.
Main Article Content
Detecting changes in Precipitation Extremes Using Global Circulation Models in the Ogun – Osun River Basin, South West Nigeria
Abstract
The study evaluates the projected changes in precipitation extremes over the Ogun-Osun River basin. The study was carried out using the ensemble mean of selected CORDEX models. Precipitation extremes were detected using indices such as the Annual total wet-day (prcptot), consecutive wet days (CWD), consecutive dry days (CDD), Total annual RR from very heavy rain days (R99p), Total annual RR from heavy rain days (R95p), Number of heavy rain days (R10mm). These indices were computed for both the historical (1979 - 2005) and the projection periods (2030–2070) under the RCP4.5 and RCP8.5 scenarios. The results show an increase in the extremes for the projection period with more severity under the RCP8.5 scenario. It can be deduced from the analysis that the projection periods are expected to have increased frequency of flash flood and drought occurrence.
