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.
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 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.
Bands
Pixel Size 927.67 meters
Bands
Name
Min
Max
Description
water_mask
Water mask
Bitmask for water_mask
Bits 0-1: Identifies water pixels; non-water pixels are masked
0: Total water pixels that are completely water and/or permanent ice.
Center for International Earth Science Information Network - CIESIN -
Columbia University. 2018. Gridded Population of the World, Version 4
(GPWv4): Water Mask, Revision 11. Palisades, NY: NASA Socioeconomic Data
and Applications Center (SEDAC). https://doi.org/10.7927/H42Z13KG.
Accessed DAY MONTH YEAR.
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 for the years 2000, 2005, …
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["This dataset, provided by NASA SEDAC, identifies and masks water pixels, including permanent ice, for global coverage."],["It is part of the Gridded Population of the World Version 4 (GPWv4) project and is based on a 30 arc-second (approximately 1km) grid."],["The dataset aids in excluding water bodies from population distribution modeling and is available from 2000 to 2020."],["Users can access and analyze the dataset through Google Earth Engine, with a provided code snippet for visualization."],["The data is licensed under CC-BY-4.0 and has a resolution of 927.67 meters."]]],["The dataset, provided by NASA SEDAC, models global human population distribution from 2000 to 2020 at approximately 1km resolution. It uses a water mask to exclude water and permanent ice from population data. The dataset, named GPWv4, Revision 11, allocates population proportionally from census data. The water mask identifies water pixels, differentiating between total and partial water, land, and ocean pixels. It can be accessed via an Earth Engine snippet and is freely available for research, education, and nonprofit use under CC-BY-4.0 license.\n"]]
