AI-generated Key Takeaways
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The GPWv411 dataset provides gridded population data at 30 arc-second resolution, including population count, density, basic demographic characteristics, and data context information.
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The dataset also includes supporting grids such as land area, mean administrative unit area, national identifiers, and water masks/areas.
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Population counts and densities are available both as consistent with national censuses and adjusted to match the 2015 Revision of UN World Population Prospects country totals.
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The Gridded Population of the World Version 4, Revision 11 models global human population distribution for the years 2000, 2005, 2010, 2015, and 2020.
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GPWv411: Adjusted to Match 2015 Revision of UN WPP Country Totals (Gridded Population of the World Version 4.11)
This dataset contains estimates of the number of persons per 30 arc-second grid cell, consistent with national censuses and population registers with respect to relative spatial distribution but adjusted to match the 2015 Revision of UN World Population Prospects country totals. There is one image … ciesin gpw nasa population -
GPWv411: Basic Demographic Characteristics (Gridded Population of the World Version 4.11)
This dataset contains population estimates, by age and sex, per 30 arc-second grid cell consistent with national censuses and population registers. There is one image for each modeled age and sex category based on the 2010 round of Census. General Documentation The Gridded Population of … ciesin gpw nasa population -
GPWv411: Data Context (Gridded Population of the World Version 4.11)
This dataset categorizes pixels with estimated zero population based on information provided in the census documents. General Documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution of global human population for the years 2000, 2005, 2010, 2015, and 2020 on … ciesin gpw nasa population -
GPWv411: Land Area (Gridded Population of the World Version 4.11)
This dataset contains the estimate of the surface area of land in square kilometers per pixel, excluding permanent ice and water, within each pixel, and was used to calculate the GPW v4.11 population density datasets. General Documentation The Gridded Population of World Version 4 (GPWv4), … ciesin gpw nasa population -
GPWv411: Mean Administrative Unit Area (Gridded Population of the World Version 4.11)
This dataset contains the mean area of the input unit(s) from which population count and density grids are created. General documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution of global human population for the years 2000, 2005, 2010, 2015, … ciesin gpw nasa population -
GPWv411: National Identifier Grid (Gridded Population of the World Version 4.11)
This dataset represents the Census data source used to produce the GPW v4.11 populations estimates. Pixels that have the same value reflect the same data source, most often a country or territory. General Documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models … ciesin gpw nasa population -
GPWv411: Population Count (Gridded Population of the World Version 4.11)
This dataset contains estimates of the number of persons per 30 arc-second grid cell consistent with national censuses and population registers. There is one image for each modeled year. General Documentation Note: Because this collection has a pyramid policy of MEAN, zooming out results in … ciesin gpw nasa population -
GPWv411: Population Density (Gridded Population of the World Version 4.11)
This dataset contains estimates of the number of persons per square kilometer consistent with national censuses and population registers. There is one image for each modeled year. General Documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution of global human … ciesin gpw nasa population -
GPWv411: UN-Adjusted Population Density (Gridded Population of the World Version 4.11)
This dataset contains estimates of the number of persons per 30 arc-second grid cell, consistent with national censuses and population registers with respect to relative spatial distribution but adjusted to match the 2015 Revision of UN World Population Prospects country totals. There is one image … ciesin gpw nasa population -
GPWv411: Water Area (Gridded Population of the World Version 4.11)
This dataset contains estimates of the water area (permanent ice and water) within each pixel, and was used to calculate the GPW v4.11 population density datasets. General Documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution of global human population … ciesin gpw nasa population surface-ground-water -
GPWv411: Water Mask (Gridded Population of the World Version 4.11)
This dataset identifies water pixels; non-water pixels are masked. The water mask was used to exclude areas of water and permanent ice from the population allocation. General Documentation The Gridded Population of World Version 4 (GPWv4), Revision 11 models the distribution of global human population … ciesin gpw nasa population surface-ground-water -
Global Mangrove Forests Distribution, v1 (2000)
The database was prepared using Landsat satellite data from the year 2000. More than 1,000 Landsat scenes obtained from the USGS Earth Resources Observation and Science Center (EROS) were classified using hybrid supervised and unsupervised digital image classification techniques. This database is the first, most … annual ciesin forest-biomass global landsat-derived mangrove