During the last decade,

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• During the last decade,
• light pollution had negative biological effect on
  plants and animals,
• light trespass provided glare and sky glow
  affecting our nighttime view of the stars,
  wasting energy, water, and exhausting our natural
  resources,
• and inefficient light had adverse effects on
  nighttime safety

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Study of Current U of A Campus at Night
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Current Problems
Undirected Lighting Sky Glow and Light Trespass
Non-cutoff vs. Cutoff Fixtures
Glare and Blinding Effects
Discontinuous Lighted Paths
Targeting Non-usable Spaces
Building Entrance Lighting
High Efficacy Coefficient of Utilization
Light Fixtures Integrated on Building Exteriors
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• The scope of our larger proposal includes Four
  Phases
• Development phase
• Dissemination phase
• Implementation phase
• Assessment phase

Not included in this proposal
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The current proposal focuses on the first two
phases the development phase and the
dissemination phase, which are divided into six
stages to be conducted over a total period of two
years, dedicating one year to each phase.
DEVELOPMENT PHASE 2005
DISSEMINATION PHASE 2006
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STAGE 1
-Nighttime aerial photographs
Preliminary Assessment for Campus Outdoor Light
Pollution
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STAGE 2

• -Evaluation of aerial photographs using GIS
• Determination of six typologies
• Circulation space
• Parking lot
• General activity space
• Transitional space
• Roof
• Minor sports activity area
• -Ground-level assessment

Targeting Light Pollution Areas
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STAGE 3
-Quantitative inventory of luminaires -Existing
conditions surveys of physical context -Documenta
tion of materials and reflectivity values
Acquiring Detailed Data
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STAGE 4
-Photometric measurement of light
intensities -Calculation of energy consumption
and costs -Collect crime and safety statistical
data -Variables entered into ArcGIS software for
spatial statistic analysis -Spatial
autocorrelations among variables for causal
relationships
Spatial Data Interpretation and Analysis Using GIS
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STAGE 5
-Construct physical models for each typological
location -Simulate scale models with variable
light source intensities and variable physical
form and material -Develop design solutions and
recommendations (including student competition
for luminaire design) -Simulate energy, resource
and cost savings -Regenerate night sky image with
computer rendering software
Developing Design Solutions and Recommendations
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STAGE 6
-Prepare, edit and compile dissemination
materials -Conduct short-courses -Facilitate
one-day workshops
Dissemination and Education
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• We are in the process of developing
• Community Partnerships
• Funding Sources Possibilities

If you are interested in participating in any
capacity with the SLC please contact The
University of Arizona Dr. N. Chalfoun
[phone] chalfoun_at_u.arizona.edu Dr. K.
Mintai [phone] mkim_at_u.arizona.edu