Modernized Method for Estimating Time-Weighted Urban Population Distributions

Jeff Young

20 September 2012

…in search of canaries ("canary in a coal mine“)

Jeff Young

20 September 2012

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Title: Modernized Method for Estimating Time-Weighted Urban Population

Distributions

Keywords: Urban, Environment, Multitemporal, Modeling, Human Settlement, Landcover, Imagery.

Type: Paper

Abstract: 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

Overview

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• Thank you

• JMY Background

• Disclaimers

• Method Circa 1983-1985

• Opportunities for Modernization

• Research Imperatives

Thank you

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• Amy Budge

• Stan Morain

• ASPRS Rocky Mountain Region

• LizardTech

• Geospatial Community in Colorado

• ..those here today

JMY Background

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• 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

Disclaimers

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• 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 imagination

Method Circa 1983

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• 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 America's Cup

• 16 bit processors, tape drives and film scanners in use

• IBM releases the IBM PC XT.

• Landsat 4 flying…but…

• McDonald's introduces the McNugget.

• Domain Name System for conceived for Internet

Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Method Circa 1983-1985

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Opportunities for Modernization

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• 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 space

Research Imperatives

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• 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, Colorado

Image Databases

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LiDAR Databases

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Durango, Colorado

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Colorado LaPlata County

Durango Region

Downtown Durango

TomTom Data Coverage Provided

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Intermap Surface Model

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Thanks

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Modernized Method for Estimating Time-Weighted Urban Population Distributions

Jeff Young

20 September 2012