High-resolution annual average predicted noise pollution levels for Accra, Ghana for 2019 – 2020 from Land Use Regression models (Clark et al Environmental Research 2022)

High-resolution annual average predicted noise pollution levels for Accra, Ghana for 2019 – 2020 from Land Use Regression models (Clark et al Environmental Research 2022)

Citation: Clark, Sierra N., et al. "Spatial modelling and inequalities of environmental noise in Accra, Ghana." Environmental Research 214 (2022): 113932. 

Link to paper (open access): https://www.sciencedirect.com/science/article/pii/S0013935122012592

Model predicted data summarised as four types of noise metrics

L_den: day-evening-night sound level, a descriptor which penalizes 10 dBA for night-time and 5 dBA for evening noise

L_day: Day-time equivalent continuous sound level

L_night: Night-time equivalent continuous sound level

L_Aeq24hr: 24-h equivalent continuous sound level

All noise metrics are A-weighted (dBA). Lday was calculated with respect to day-time hours between 6:00–21:59 and Lnight between 22:00–5:59. Lden was calculated with respect to day-time hours between 6:00–18:59, evening between 19:00–21:59, and night-time between 22:00–5:59. 

Some areas within the Greater Accra Metropolitan Area (GAMA) do not have noise predictions as these were areas falling outside of a 100m buffer around the city’s road network (details in Clark et al 2022).  

Variables in .csv files 

index: unique identifier for each point location within the Greater Accra Metropolitan Area (based on 2010 census boundaries) 

Noise metrics (inclusion depends on .csv datasets and see definitions above): 

         LDEN: Day-evening-night sound level (dBA)

         Lday: Day-time sound level (dBA)

         Lnight: Night-time sound level (dBA)

         LAeq24hr: 24-hour sound level (dBA)

coords.x1: Longitude as decimal degrees

coords.x2: Latitude as decimal degrees