GPWv411: Water Mask (Gridded Population of the World Version 4.11)

  • 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.
CIESIN/GPWv411/GPW_Water_Mask
Dataset Availability
2000-01-01T00:00:00Z–2020-01-01T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("CIESIN/GPWv411/GPW_Water_Mask")
Tags
ciesin gpw nasa population surface-ground-water

Description

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, 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 Pixel Size Description
water_mask meters

Water mask
* estimated min or max value

Terms of Use

Terms of Use

CC-BY-4.0

Citations

Citations:

  • 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.

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('CIESIN/GPWv411/GPW_Water_Mask');
var raster = dataset.select('water_mask');
var raster_vis = {
  'min': 0.0,
  'palette': [
    '005ce6',
    '00ffc5',
    'bed2ff',
    'aed0f1'
  ],
  'max': 3.0
};
Map.setCenter(-88.6, 26.4, 1);
Map.addLayer(raster, raster_vis, 'water_mask');
Open in Code Editor
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, …
CIESIN/GPWv411/GPW_Water_Mask, ciesin,gpw,nasa,population,surface-ground-water
2000-01-01T00:00:00Z/2020-01-01T00:00:00Z
-90 -180 90 180
Google Earth Engine