Evolution of Ozone above Togo during the 1979–2020 Period

The objective of this paper is to estimate the trend Total Ozone Column (TOC) over Togo. A Multi-Sensor Reanalysis-2 (MSR-2) TOC entire territory Togo was used. Multiple Linear Regression (MLR) method has been applied retrieve interannual contributions different forcings and long-term variability. It found that Annual Oscillation (AnO), Quasi Biennial at 30 mb (QBO30), Solar Flux (SF), El Niño–Southern (ENSO) a statistically significant influence on variability TOC. strongest contribution (22 ± 1.4 DU) allocated AnO while weakest (<1 attributed Semi-Annual Oscillations (SAnO). Before peak year Equivalent Effective Stratospheric Chlorine (EESC) in tropics 1997, negative (−0.3% 0.9% per decade) not significant. After year, positive observed. 0.6% 0.2% decade. monthly during rainy season (particularly monsoon period) except April, unlike harmattan period (DJF), where