Global 1-km Downscaled Urban Land Extent Projection and Base Year Grids by SSP Scenarios, 2000-2100
The Global 1-km Downscaled Urban Land Extent Projection and Base Year Grids by SSP Scenarios, 2000-2100 consists of global SSP-consistent spatial urban land fraction data for the base year 2000 and projections at ten-year intervals for 2010-2100 at a resolution of 1-km (about 30 arc-seconds). An algorithm was developed and validated to downscale the 1/8-degree resolution data set to 1-km resolution. For a given decade, the downscaling algorithm allocates the 1/8-degree decadal amount of urban land expansion to 1-km grid cells in proportion to their total urban land amounts at the beginning of the decade. The algorithm uses an iterative process to collect any overflows from already highly-developed 1-km grid cells, and then allocates them to 1-km grid cells that are not yet fully developed. This iterative process repeats itself until all 1/8-degree amounts of urban land expansion are allocated to 1-km grid cells with no overflow. The downscaling process is applied decade by decade throughout the 21st century for each urban land expansion scenario. The final product is a set of global maps displaying the 1-km fraction of urban land, updated at decadal intervals throughout the 21st century, for five different urban land expansion scenarios consistent with the Shared Socioeconomic Pathways (SSPs).
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "026:00" ] |
| contactPoint |
{ "fn": "undefined", "@type": "vcard:Contact", "hasEmail": "mailto:metadata@ciesin.columbia.edu" } |
| description | The Global 1-km Downscaled Urban Land Extent Projection and Base Year Grids by SSP Scenarios, 2000-2100 consists of global SSP-consistent spatial urban land fraction data for the base year 2000 and projections at ten-year intervals for 2010-2100 at a resolution of 1-km (about 30 arc-seconds). An algorithm was developed and validated to downscale the 1/8-degree resolution data set to 1-km resolution. For a given decade, the downscaling algorithm allocates the 1/8-degree decadal amount of urban land expansion to 1-km grid cells in proportion to their total urban land amounts at the beginning of the decade. The algorithm uses an iterative process to collect any overflows from already highly-developed 1-km grid cells, and then allocates them to 1-km grid cells that are not yet fully developed. This iterative process repeats itself until all 1/8-degree amounts of urban land expansion are allocated to 1-km grid cells with no overflow. The downscaling process is applied decade by decade throughout the 21st century for each urban land expansion scenario. The final product is a set of global maps displaying the 1-km fraction of urban land, updated at decadal intervals throughout the 21st century, for five different urban land expansion scenarios consistent with the Shared Socioeconomic Pathways (SSPs). |
| distribution |
[ { "@type": "dcat:Distribution", "title": "View documentation related to this dataset", "format": "HTML", "mediaType": "text/html", "description": "Documentation Page", "downloadURL": "https://sedac.ciesin.columbia.edu/data/set/ssp-1-km-downscaled-urban-land-extent-projection-base-year-ssp-2000-2100/docs" }, { "@type": "dcat:Distribution", "title": "Get a related visualization", "format": "JPEG", "mediaType": "image/jpeg", "description": "Sample browse graphic of the data set.", "downloadURL": "https://sedac.ciesin.columbia.edu/downloads/maps/ssp/ssp-1-km-downscaled-urban-land-extent-projection-base-year-ssp-2000-2100/sedac-logo.jpg" }, { "@type": "dcat:Distribution", "title": "Google Scholar search results", "format": "HTML", "mediaType": "text/html", "description": "Search results for publications that cite this dataset by its DOI.", "downloadURL": "https://scholar.google.com/scholar?q=10.7927%2F1z4r-ez63" } ] |
| identifier | C2161983020-SEDAC |
| issued | 2021-11-01 |
| keyword |
[ "earth-science", "land-surface", "land-use-land-cover" ] |
| language |
[ "en-US" ] |
| modified | 2025-07-17 |
| programCode |
[ "026:001" ] |
| publisher |
{ "name": "SEDAC", "@type": "org:Organization" } |
| spatial | -180.0 -90.0 180.0 90.0 |
| temporal | 2000-01-01T00:00:00Z/2100-12-31T00:00:00Z |
| theme |
[ "SSP", "geospatial" ] |
| title | Global 1-km Downscaled Urban Land Extent Projection and Base Year Grids by SSP Scenarios, 2000-2100 |
