GHS-SMOD R2023A - GHS settlement layers, application of the Degree of Urbanisation methodology (stage I) to GHS-POP R2023A and GHS-BUILT-S R2023A, multitemporal (1975-2030)

The layers present the application of the Degree of Urbanisation stage I methodology recommended by UN Statistical Commission to the global population grid generated by the JRC in the epochs 1975-2030 (5 years timestep). They have been generated by integration of built-up surface extracted from Landsat and Sentinel-2 image data processing (GHS-BUILT-S R2023), and population data derived from the CIESIN GPW v4.11 (GHS-POP R2023).

This product is an update of the data released in 2022 based on the updates of the GHS-BUILT-S and GHS-POP. The Settlement Model is provided at the detailed level (Second Level - L2). First level can be obtained aggregating L2.

本系列图层展示了联合国统计委员会（UN Statistical Commission）推荐的城市化程度第一阶段方法论，在1975-2030年、时间步长为5年的时段下，应用于欧盟联合研究中心（JRC）生成的全球人口网格的具体实践。本系列图层通过整合两类核心数据构建而成：其一为经Landsat与Sentinel-2影像处理提取的建成地表数据（GHS-BUILT-S R2023），其二为源自CIESIN GPW v4.11的人口统计数据（GHS-POP R2023）。

本产品为2022年发布数据的更新版本，更新依据为GHS-BUILT-S与GHS-POP数据集的最新修订。该居住格局模型以精细二级（Second Level - L2）粒度对外提供，一级粒度数据可通过聚合L2级数据直接获取。