Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Analysis of the Spatio-temporal Rainfall Variability in Cameroon over the Period 1950 to 2019

Version 1 : Received: 3 October 2022 / Approved: 6 October 2022 / Online: 6 October 2022 (08:17:50 CEST)

A peer-reviewed article of this Preprint also exists.

Ebodé, V.B. Analysis of the Spatio-Temporal Rainfall Variability in Cameroon over the Period 1950 to 2019. Atmosphere 2022, 13, 1769. Ebodé, V.B. Analysis of the Spatio-Temporal Rainfall Variability in Cameroon over the Period 1950 to 2019. Atmosphere 2022, 13, 1769.

Abstract

The rainfall study in the long term is essential for climatic change understanding and socioeconomic development. The main goal of this study is to explore the spatial and temporal variations of precipitation in different time scales (seasonal and annual) in Cameroon. The Mann–Kendall and Pettitt tests were applied to analyze the precipitation variability. On temporal plan, the different regions of Cameroon have recorded significant drops in annual rainfall that Pet-titt's test generally situates around the 1970s. The decreases observed for the northern part of Cameroon regions are between –5.4% (Adamawa) and –7.4% (Far North). Those of west-ern part regions oscillate between –7.5% (South-West) and –12.5% (West). The southern part of Cameroon regions recorded decreases varying between –4.3% (East) and –5.9% (Center). On spatial plan, the divisions of the northern, western and southern parts of Cameroon respectively recorded after the 1970s (a pivotal period in the evolution of precipitation on temporal plan), a precipitation decrease towards the South, the South-West and the West. This study's findings could be helpful for planning and managing water resources in Cameroon.

Keywords

Cameroon; rainfall; long-term variability; trend tests

Subject

Social Sciences, Geography, Planning and Development

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