The Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11 consists of estimates of human population density (number of persons per square kilometer) based on counts consistent with national censuses and population registers, for the years 2000, 2005, 2010, 2015, and 2020. A proportional allocation gridding algorithm, utilizing approximately 13.5 million national and sub-national administrative units, was used to assign population counts to 30 arc-second grid cells.
The Landuse layer of Rarotonga was produced in 2009/2010 under the Sustainable Land Management (SLM) Project. This project was co-implemented by NES and MOIP.
The layer was produced by digitizing from satellite imagery and carrying out random checks on the field.