- To provide additional information about the quality of input population data and to provide context for the population count and density grids.
- Gridded Population of the World, Version 4 (GPWv4) Data Quality Indicators consist of three data layers created to provide additional information about the quality of input population data and to provide context for the population count and density grids. The water mask distinguishes between pixels that are completely water and/or ice (Total Water Pixels) and pixels that also contain land (Partial Water Pixels). The data context grid categorizes pixels with estimated zero population based on information provided in the census documents, such as areas that are part of a national park, areas that have no households, etc. The Mean Administrative Unit Area grid measures the mean unit size in square kilometers. The mean unit size grid provides a quantitative surface that indicates the size of the input unit(s) from which population count and density grids are created.
- Recommended Citation(s)*:
Center for International Earth Science Information Network - CIESIN - Columbia University. 2016. Gridded Population of the World, Version 4 (GPWv4): Data Quality Indicators. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC). http://dx.doi.org/10.7927/H49C6VBN. Accessed DAY MONTH YEAR.
* When authors make use of data they should cite both the data set and the scientific publication, if available. Such a practice gives credit to data set producers and advances principles of transparency and reproducibility. Please visit the data citations page for details. Users who would like to choose to format the citation(s) for this dataset using a myriad of alternate styles can copy the DOI number and paste it into Crosscite's website.
† For EndNote users, please check the Research Note field for issues with importing authors that are organizations when using the ENW file format.
- Available Formats:
- raster, map, map service