AI-generated Key Takeaways
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Deprecated: This dataset has been replaced by a newer version, CIESIN/GPWv411/GPW_Land_Area.
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Global Population Distribution: The Gridded Population of the World Version 4 (GPWv4) models global human population distribution for 2000, 2005, 2010, 2015, and 2020.
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Resolution and Methodology: Population data is presented on a 30 arc-second (approximately 1km) grid, using proportional allocation from census and administrative units.
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Ancillary Data: This dataset provides additional data grids that offer insights into the quality and methodology of population estimates, including water masks and land area estimates.
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Data Context: Information on areas with estimated zero population, such as parks, military zones, and uninhabited regions, is included in a dedicated data-context band.
- Dataset Availability
- 2000-01-01T00:00:00Z–2020-01-01T00:00:00Z
- Dataset Provider
- CIESIN
- Tags
Description
The Gridded Population of World Version 4 (GPWv4) models the distribution of global human population for the years 2000, 2005, 2010, 2015, and 2020 on 30 arc-second (approximately 1 km) grid cells. Population is distributed to cells using proportional allocation of population from census and administrative units. Population input data are collected at the most detailed spatial resolution available from the results of the 2010 round of censuses, which occurred between 2005 and 2014. The input data are extrapolated to produce population estimates for each modeled year.
These ancillary data grids contain additional per-pixel data that can be used to assess the quality of the population estimates and how they were produced.
Bands
Pixel Size
927.67 meters
Bands
| Name | Units | Min | Max | Pixel Size | Description | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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water-mask |
meters | Water mask |
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data-context |
meters | Categorizes pixels with estimated zero population based on information provided in the census documents. |
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mean-administrative-unit-area |
km^2 | 0* | 816831* | meters | The mean area of the input unit(s) from which population count and density grids are created. |
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national-identifier |
4* | 999* | meters | An integer that represents the census data source used to produce the GPWv4 population estimates. Pixels (grid cells) that have the same value reflect the same data source, most often a country or territory. Note that these data represent the area covered by the statistical data as provided, and are not official representations of country or territory boundaries. |
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land-area |
km^2 | 0* | 0.86* | meters | Estimate of the land area, excluding permanent ice and water, within each 30 arc-second pixel. |
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water-area |
km^2 | 0* | 0.86* | meters | Estimate of the water area (permanent ice and water) within each 30 arc-second pixel. |
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data-context Class Table
| Value | Color | Description |
|---|---|---|
| 201 | #099506 | Park or protected area. |
| 202 | #ff0b00 | Military district, airport zone, or other infrastructure. |
| 203 | #060606 | Not enumerated or not reported in census. |
| 204 | #a5a5a5 | No households. |
| 205 | #ffe152 | Uninhabited. |
Terms of Use
Terms of Use
Citations
Center for International Earth Science Information Network - CIESIN - Columbia University. 2016. Gridded Population of the World, Version 4 (GPWv4): Administrative Unit Center Points with Population Estimates. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC). https://doi.org/10.7927/H4F47M2C. Accessed DAY MONTH YEAR.
DOIs
Explore with Earth Engine
Code Editor (JavaScript)
var dataset = ee.Image('CIESIN/GPWv4/ancillary-data-grids'); var zeroPopulationAreas = dataset.select('data-context'); var zeroPopulationAreasVis = { min: 201.0, max: 205.0, palette: ['099506', 'ff0b00', '060606', 'a5a5a5', 'ffe152'], }; Map.setCenter(-3.3, 36.03, 1); Map.addLayer( zeroPopulationAreas, zeroPopulationAreasVis, 'Zero Population Areas');