GRID3 BFA - Population v1.1

The zip files contain the following files: BFA_population_v1_1_gridded.tif This geotiff raster, at a spatial resolution of 3 arc-seconds (approximately 100m at the equator), contains estimates of total population size per grid cell across Burkina Faso. The projection is the geographic coordinate system WGS84 (World Geodetic System 1984). NA values represent areas that were mapped as unsettled based on building footprints provided by the Digitize Africa project of Ecopia.AI and Maxar Technologies [2]. These data are stored as floating-point numbers rather than integers to avoid rounding errors in aggregated populations for larger areas. BFA_population_v1_1_agesex.zip This zip folder contains 39 population rasters in geotiff format. Each raster provides gridded population estimates for an age-sex group. Files are labelled with either an “m” (male) or an “f” (female) followed by the number of the first year of the age within the age group represented by the data. The age groups are in five-year bins labelled with a “5”, “10”, etc. For instance, “f0” and “m0” are population counts of under 5 year olds for females and males, respectively. Eighty-five year olds and over are represented in the groups “f85” and “m85”. We provide three additional rasters that represent demographic groups often targeted by programmes and interventions. These are “under5” (all females and males under the age of 5), “under15” (all females and males under the age of 15) and “f15_49” (all females between the ages of 15 and 49, inclusive). These data were produced using age-sex proportions from the 2019 census as provided in the age-sex proportion table (BFA_population_v1_1_agesex.csv) with corresponding region raster (BFA_population_v1_1_agesex_regions.tif). The age-sex proportions were applied to the gridded population estimates (BFA_population_v1_1_gridded.tif) to allocate the population to the different age-sex classes. While this data represents population counts, values contain decimals, i.e. fractions of people. This is because we do not estimate which grid cell each individual in a given age group occupies. For this reason, it is advised to aggregate the rasters at a coarser scale. For example, if four grid cells next to each other have values of 0.25 this indicates that there is 1 person of that age group somewhere in those four grid cells. Note: f0 and m0 in this application represent under 5 population, contrary to other datasets on the WorldPop Open Population Repository where f0 and m0 represent population under the age of 1. Data Citation: WorldPop and Institut National de la Statistique et de la Démographie du Burkina Faso. 2022. Censusbased gridded population estimates for Burkina Faso (2019), version 1.1. WorldPop, University of Southampton. doi: 10.5258/SOTON/WP00736. These data were produced by the WorldPop Research Group at the University of Southampton. This work is part of the GRID3 (Geo-Referenced Infrastructure and Demographic Data for Development) project funded by the Bill and Melinda Gates Foundation (BMGF) and the United Kingdom Foreign, Commonwealth & Development Office (OPP1182425). Project partners include WorldPop at the University of Southampton, the United Nations Population Fund (UNFPA), Center for International Earth Science Information Network in the Columbia Climate School at Columbia University, and the Flowminder Foundation. The Burkina Faso Institut National de la Statistique et de la Démographie supported, facilitated this work, reviewed the results and provided the census database. The modelling work, geospatial data processing, and stakeholder engagement was led by Edith Darin. Support for the engagement work and review of the methods was offered by Mathias Kuépié (UNFPA) and Antoinette Wannebo (CIESIN). Oversight was done by Andrew J.Tatem and Attila N. Lazar. The downloadableMetadataprovides more information about Source Data, Methods Overview, Assumptions & Limitations and Works and Data Cited Contact [e-mail] for more information or gohere.