Saturday, April 4, 2020

*** NASA global population density data

NASA Earth Observations NEO

https://neo.sci.gsfc.nasa.gov/view.php?datasetId=SEDAC_POP

the gridded population data of the world
https://sedac.ciesin.columbia.edu/data/set/gpw-v4-population-density-rev11

The files for this data set are available as global rasters in GeoTIFF, ASCII (text), and netCDF format. The ASCII and GeoTIFF data are available at the native 30 arc-second resolution and four lower resolutions: 2.5 arc-minute, 15 arc-minute, 30 arc-minute, and 1 degree. NetCDF files are available at all resolutions except 30 arc-second. The data are stored in WGS84, geographic coordinate system (latitude/longitude).
Each downloadable is a compressed zip file containing either the global GeoTIFF or ASCII for the year and resolution of the estimate, or the netCDF containing all years of the estimate at a selected resolution, as well as data quality layers and ancillary files. A separate documentation zip file contains PDF documentation, a Microsoft Excel file (.xlsx) with country-level information and sources, and a text file (.txt) with a log of changes to the data set by version.
The netCDF file format is only available for the All Years Combined category and is not available at 30 arc-second

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