Downscaling Global Spatial Population Projections from 1/8-degree to 1-km Grid Cells

Global spatial population projections consistent with the Shared Socioeconomic Pathways (SSPs) are important for understanding interactions between societal and climatic changes, as well as mitigating adverse impacts of global environmental change. Current SSP spatial population projections were modeled at 1/8-degree grid cells. For studies requiring data with a finer spatial resolution, this technical note presents a simple approach downscaling the 1/8-degree spatial population projections to 1-km grid cells, using a 1-km ancillary map showing total population counts in 2000. The general spatial patterns shown by the resulting 1-km population projections are consistent with the original 1/8-degree projections. However, some spatial characteristics of both the 1/8-degree spatial population projections and the 1-km ancillary map propagated into the 1-km population projections as subtle spatial artifacts. The magnitudes of these artifacts vary across world regions, population types, and SSPs, and their potential effects on subsequent analyses should be evaluated case by case, considering what numerical and spatial precisions/details are necessary for those analyses. Although complex spatial population models may address the limitations of the downscaling products presented here, their development can be time-consuming. This projection can therefore be used as a defensible substitute until better options become available.

To Access Resource:

Questions? Email Resource Support Contact:

    UCAR/NCAR - Library


Resource Type publication
Temporal Range Begin N/A
Temporal Range End N/A
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links N/A
Additional Information N/A
Resource Format PDF
Standardized Resource Format PDF
Asset Size N/A
Legal Constraints

Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email
Resource Support Organization UCAR/NCAR - Library
Distributor N/A
Metadata Contact Name N/A
Metadata Contact Email
Metadata Contact Organization UCAR/NCAR - Library

Author Gao, Jing
Publisher UCAR/NCAR - Library
Publication Date 2017-08-24T00:00:00
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier N/A
Resource Version N/A
Topic Category geoscientificInformation
Progress N/A
Metadata Date 2023-08-18T18:06:30.588308
Metadata Record Identifier edu.ucar.opensky::technotes:553
Metadata Language eng; USA
Suggested Citation Gao, Jing. (2017). Downscaling Global Spatial Population Projections from 1/8-degree to 1-km Grid Cells. UCAR/NCAR - Library. Accessed 04 December 2023.

Harvest Source