2012 ASPRS Track, Modernized Method for Estimating Time-Weighted Urban Population Distributions, Jeffrey M Young
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2012 ASPRS Track, Modernized Method for Estimating Time-Weighted Urban Population Distributions, Jeffrey M Young

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Potentially hazardous substances are used with increasing frequency in modern life. Consequently, the potential for human exposure to these substances is a major concern globally. This paper......

Potentially hazardous substances are used with increasing frequency in modern life. Consequently, the potential for human exposure to these substances is a major concern globally. This paper examines a method developed in the 1983 to 1985 at the USA Environmental Protection Agency. The author of this paper was the principal investigator of that method. The computer based method developed estimates urban population distribution in specified units of geography during twelve 2-hour periods of the day. The population distributions are further disaggregated by sex and age categories. Since the development of this method significant advances in the resolution, comparability and frequency of available remotely sensed data have been made. These data lend themselves very well to a modernization of this method, the usefulness of this method in urban areas globally and improved quality of the results of the model. Recommended improvements to this method are discussed, practicality of use is assessed and a prototypical model of the method is offered using southwestern Colorado USA as a study area.

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  • 1. 20 September 2012Modernized Method for Estimating Time-Weighted Urban Population Distributions Jeff Young
  • 2. 20 September 2012…in search of canaries ("canary in a coal mine“) Jeff Young
  • 3. Title: Modernized Method for Estimating Time-Weighted Urban Population DistributionsKeywords: Urban, Environment, Multitemporal, Modeling, Human Settlement, Landcover, Imagery.Type: PaperAbstract: Abstract: Potentially hazardous substances are used with increasing frequency in modern life. Consequently, the potential for human exposure to these substances is a major concern globally. This paper examines a method developed in the 1983 to 1985 at the USA Environmental Protection Agency. The author of this paper was the principal investigator of that method. The computer based method developed estimates urban population distribution in specified units of geography during twelve 2-hour periods of the day. The population distributions are further disaggregated by sex and age categories. Since the development of this method significant advances in the resolution, comparability and frequency of available remotely sensed data have been made. These data lend themselves very well to a modernization of this method, the usefulness of this method in urban areas globally and improved quality of the results of the model. Recommended improvements to this method are discussed, practicality of use is assessed and a prototypical model of the method is offered using southwestern Colorado USA as a study area.Authors: Jeffrey M. Young, LizardTech jyoung@lizardtech.com*Topics: ASPRS Track 3
  • 4. Overview• Thank you• JMY Background• Disclaimers• Method Circa 1983-1985• Opportunities for Modernization• Research Imperatives4
  • 5. Thank you• Amy Budge• Stan Morain• ASPRS Rocky Mountain Region• LizardTech• Geospatial Community in Colorado• ..those here today5
  • 6. JMY Background• Born in Scranton, Pennsylvania USA• A blighted geography---king coal• Practicing Geographer o Scientific Applications o Modeling o Site Selection o Data Quality Concerns• Now Business Endeavors• Living in Centennial, Colorado 6
  • 7. Disclaimers• Strictly my own opinions• Large body of knowledge yet to be assessed• ….a first few steps…very much a work in progress• Previous method was primitive and was constrained o Technology---”pre-ARC age” o Limited to inhalation exposure concerns o Policy of the sponsoring USA agency o Researcher Bias• …Now only constrained by our imagination7
  • 8. Method Circa 1983 • Bob Hawke is elected Prime Minister of Australia. • First flight of the Space Shuttle Challenger • Korean Air Lines Flight 007 is shot down • Reagan announces (GPS) available for civilian use • Australian yacht Australia II wins the Americas Cup • 16 bit processors, tape drives and film scanners in use • IBM releases the IBM PC XT. • Landsat 4 flying…but… • McDonalds introduces the McNugget. • Domain Name System for conceived for Internet8
  • 9. Method Circa 1983-19859
  • 10. Method Circa 1983-198510
  • 11. Method Circa 1983-198511
  • 12. Method Circa 1983-198512
  • 13. Method Circa 1983-198513
  • 14. Method Circa 1983-198514
  • 15. Method Circa 1983-198515
  • 16. Method Circa 1983-198516
  • 17. Method Circa 1983-198517
  • 18. Method Circa 1983-198518
  • 19. Method Circa 1983-198519
  • 20. Method Circa 1983-198520
  • 21. Opportunities for Modernization• VGI • Volunteered Mobility Information (VMI) • Volunteered Exposure Information (VEI) • “Open” exposure networks • For Model Calibration • …there is an app that?• Geospatial as a collection and modeling framework• Toward an understanding of the non-visible• Stamp– The Geography of Life and Death• It’s all about time…its all about space21
  • 22. Research Imperatives• Cloud• Social/Crowd interface (check out http://spacecurve.com/technology/ )• 3D and 4D• Mobile Devices• -------• Collaboration of the Medical and Scientific Communities• Technology Canaries• Understand Quality• Exposure prismatoid• Notion of a representative sample revisited• Literature is rich with ideas• Field Testing – Durango, Colorado22
  • 23. Image Databases24
  • 24. LiDAR Databases25
  • 25. Durango, ColoradoColorado LaPlata County Durango Region Downtown Durango 26
  • 26. TomTom Data Coverage Provided27
  • 27. Intermap Surface Model28
  • 28. Thanks29
  • 29. 20 September 2012Modernized Method for Estimating Time-Weighted Urban Population Distributions Jeff Young