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Light Pollution Analysis of the Istrian Peninsula

ICPS 2003, Odense - Denmark. Light Pollution Analysis of the Istrian Peninsula. Ivica Crljenica, University of Zagreb. Light Pollution is all the light that doesn’t illumiates what it should. It is mainly produced by improper public lightning. Light Pollution examples in the world….

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Light Pollution Analysis of the Istrian Peninsula

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  1. ICPS 2003, Odense - Denmark Light Pollution Analysis of the Istrian Peninsula Ivica Crljenica, University of Zagreb

  2. Light Pollution is all the light that doesn’t illumiates what it should It is mainly produced by improper public lightning

  3. Light Pollution examples in the world… Zagreb, 11:54 PM Los Angeles, 00:26 AM …and in our country

  4. Light pollution in Europe in 1997… …and the prevision for 2025.

  5. Measurement setup • Increased mobility • Larger analysis area – app 200 km2/night

  6. Data Aquisition CCD camera - 250 s exposition GPS device

  7. Raw Data

  8. Data Analysis Image processing Data interpolation

  9. Analysied area app 900km2

  10. Comparison with last year’s results 2002. 2003. Difference:

  11. 3D view of all measurements 2003. 2002. Difference:

  12. Sky Glow decrement by radius city boundary

  13. Model of Sky Glow propagation Propagation model: I=I0/rq r < 1km q=0.020±0.007 Rq=35% r > 1km q=0.57±0.05 Rq=8.77%

  14. Sky Glow – Population dependancy Sky Glow distribution Population distribution

  15. Sky Glow Local Monitoring group website: www.fizika.org/sglm Ivica Crljenica, University of Zagreb icrljen@fizika.org

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