Nitrogen oxides (NO and NO₂) pollution in the Accra metropolis: Spatiotemporal patterns and the role of meteorology.

ABSTRACT: Economic and urban development in sub-Saharan Africa (SSA) may be shifting the dominant air pollution sources in cities from biomass to road traffic. Considered as a marker for traffic-related air pollution in cities, we conducted a city-wide measurement of NO_x levels in the Accra Metropolis and examined their spatiotemporal patterns in relation to land use and meteorological factors. Between April 2019 to June 2020, we collected weekly integrated NO_x (n = 428) and NO₂ (n = 472) samples at 10 fixed (year-long) and 124 rotating (week-long) sites. Data from the same time of year were compared to a previous study (2006) to assess changes in NO₂ concentrations. NO and NO₂ concentrations were highest in commercial/business/industrial (66 an

SUBMITTER: Wang J 

PROVIDER: S-EPMC7611659 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature