A Multi-Pollutant Emissions Inventory for Air Pollution Modeling and Supporting Information for Addis Ababa

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ABSTRACT: Ground measurements and satellite observations over Addis Ababa airshed show a deteriorating trend of air pollution, especially for PM2.5 (all particulate matter under 2.5um). In this paper, we present a review of available monitoring data; a model-ready multi-pollutant (PM10, PM2.5, SO2, NOx, CO, non-methane VOCs, and CO2) emissions inventory at 0.01º resolution for the designated airshed; a heatmap of PM2.5 concentrations and an estimate of source contributions constructed using WRF-CAMx chemical transport modelling system; and a discussion on proposed actions towards establishing an air quality management plan for the city. Emissions from road transport; residential and commercial cooking; resuspended dust on roads and from construction activities; residential and industrial heating; lighting; open waste burning; and other industrial activities contributed the most to ambient PM2.5 pollution. Particularly, vehicle exhaust is estimated to contribute up to 29% of total PM2.5, followed by biomass combustion in the residential and industrial sectors.

File included in this dataset:

Composite presentation of supporting information and analysis resultsFile: Report-Addis-Data-Summary.pptxThis presentation includes summary images of

monitoring data

the GIS fields

google earth scans 

annual and monthly emissions

annual and monthly PM2.5 concentrations

annual and monthly source apportionment

Ambient monitoring dataFile: AddisAbaba_AllEmbassy_Data.xlsx (summary of data till May2024)File: monitoring_addisair_cleaned.xlsx (summary of sensor data)

Gridded emissions inventoryFile: addis_gridded_emissions.rarFormat: ix,iy,midlong,midlat,FPRM,CPRM,BC,OC,NO,NO2,CO,SO2Units: tons/grid/yearPM2.5 emissions = FPRM + BC + OCPM10 emissions = FRPM + BC + OC + CPRMmidlong and midlat are midpoints of grids - see gis_addis_grids.rar

TROPOMI UVAI and MODIS AODData files extracted from google earth engine as TIF and CSV, for the designated airshedFile: ADDISABABA_yearly_tifs.zip

Meteorlogical data summary for the airshed, extracted from the WRF sumulationsFile: meteo_addis.houravg_summary.csv

Reference reportsFile: Report-C40-2016-Addis-Ababa-GHG-Emssions.pdfFile: Report-CSE-Ethiopia-Urban-AQM-Guidance.pdfFile: Report-WB-Ethiopia-motorization-management.pdfFile: Report-UNEP-Addis-AQM-Plan-Draft.pdf

GIS filesFile: gis_addis_grids.rar (shapefile and KML file for the airshed grid)File: gis_addis_osm_roads.rar (shapefiles extracted from openstreetmaps)File: pop_extracts_4selection_domain.xlsm (gridded population data, with macros can be used to extract population totals around a monitoring station)File: gis_addis_multiple_layers.rar (as KML files - districts, townships, main_roads, water_bodies, quarries, landfill, industrial_areas)