GHS-POP R2023A - GHS population grid multitemporal (1975-2030)

The spatial raster dataset depicts the distribution of population, expressed as the number of people per cell. Residential population estimates between 1975 and 2020 in 5 years intervals and projections to 2025 and 2030 derived from CIESIN GPWv4.11 were disaggregated from census or administrative units to grid cells, informed by the distribution, density, and classification of built-up as mapped in the Global Human Settlement Layer (GHSL) global layer per corresponding epoch. This dataset is an update of the product released in 2022. Major improvements are the following: use of built-up volume maps (GHS-BUILT-V R2022A); use of more recent and detailed population estimates derived from GPWv4.11 integrating both UN World Population Prospects 2022 country population data and World Urbanisation Prospects 2018 data on Cities; revision of GPWv4.11 population growthrates by convergence to upper administrative level growthrates; systematic improvement of census coastlines; systematic revision of census units declared as unpopulated; integration of non-residential built-up volume information (GHS-BUILT-V_NRES R2023A); spatial resolution of 100m Mollweide (and 3 arcseconds in WGS84); projections to 2030.

搜集汇总

背景与挑战

背景概述

GHS-POP R2023A是一个全球人口栅格数据集，展示了1975年至2030年（以5年为间隔）的人口分布，以每单元人数表示。该数据集基于CIESIN GPWv4.11人口估计和全球人类住区层（GHSL）的建筑分布信息进行空间分解，是2022年版本的更新，主要改进包括使用建筑体积地图、整合更详细的人口数据以及提升空间分辨率至100米。