Analyse De L'évolution Contemporaine De La Température De L’air Et Des Précipitations Sur Le Territoire Du Mali

Abstract

This paper focuses on analyzing decadal and long-term changes in temperature and rainfall in Mali over the last 80 years of the 20 th century. In this study, a database of these elements on 33 weather stations across the country has been designed. The first step was the submission of data sets to quality control via statistical tests. Afterwards, they were successfully restored and used to estimate climatic normals with the sliding average method. The comparison of rainfall distribution maps shows a decrease of 115 mm (or-18,3%) during the period from 1921 to 2000, resulting in a displacement of isohyets to the south of 135 km. This allowed us to understand the evolution of temperature and rainfall over several decades of the last century in Mali.