Sampling Five Criteria Air Pollutant over Nigeria from 2005 to 2018 using NASA GIOVANNI Air Quality

In this study, regional air pollution across
Nigeria was studied for five criteria air pollutants. The
pollutants are carbon Monoxide (CO), Sulphur Dioxide
(SO2), Ozone (O3), Aerosol Optical Depth (AOD) at
550nm, and Nitrogen Dioxide (NO2).These criteria air
pollutant were assessed from NASA GIOVANNI air
quality platform. The data obtained was analyzed using
a time series analysis. Three of the variables, CO, NO2
and SO2 showed a slight decline in the concentration of
pollutants across the years. A Principal Component
Analysis (PCA) statistics conducted in the study revealed
that annual CO, NO2 and SO2 were positively correlated
while AOD showed a very weak correlation with CO,
SO2 and NO2. Ozone negatively correlated with all other
variables. A Hierarchical Cluster Analysis (HCA)
conducted grouped the pollutants into two major groups
which agreed with the Principal Component Analysis
(PCA) which grouped the pollutants into two
component.