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LandScan Population Research Program

LandScan Population Research Program. Budhendra Bhaduri Geographic Information Science and Technology Computational Sciences and Engineering. What is LandScan?. Population distribution model, database, and tool developed from census and other spatial data using a uniform regular grid.

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LandScan Population Research Program

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  1. LandScan Population Research Program Budhendra Bhaduri Geographic Information Science and Technology Computational Sciences and Engineering

  2. What is LandScan? Population distribution model, database, and tool developed from census and other spatial data using a uniform regular grid Improving knowledge of where people are located

  3. 325 63 112 0 3250 630 Total PopulationBlock PCBlock= n∑ 1 WCell i,j 1120 0 How is LandScan developed? • Dasymetric spatial modeling. • Distribute best available census counts to LandScan cells based on a likelihood coefficient calculated by spatial models. • Model structure is the same everywhere, but weights for each variable are tailored to each country. • Similar operations performed for each data layer and outputs are mathematically combined. • Population is allocated to each cell. H: High-density residential L: Low-density residential F: Evergreen forest W: Water PopulationCell i,j= PCBlock Wcell i,j Aggregated to coefficient cell size WCell i,j = LCi,j PRi,j  Si,jLMi,j Product of additional data types (e.g. distance from roads, slope)

  4. Community standard for population

  5. LandScan application: Tsunami relief

  6. 1998 Kosovo Refugee Crisis LandScan Global Population Project Oak Ridge National Laboratory May 25, 1999

  7. LandScan data resolutions: Global USA Interim USA LandScan spatial resolutions

  8. LandScan USA Harris County and the city of Houston

  9. Day Night

  10. SAN DIEGO, CA - RESIDENTIAL SAN DIEGO, CA DAYTIME n

  11. Hurricane preparedness and response FEMA Impacted Areas Source: FEMA Impacted Areas, August 31, 2005

  12. Contact • Budhendra Bhaduri • Geographic Information Science and Technology • Computational Sciences and Engineering • (865) 241-9272 • bhaduribl@ornl.gov 14 Bhaduri_LandScan_SC07

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