Light Pollution Analysis of the Istrian Peninsula

Light Pollution Analysis of the Istrian Peninsula

Ivica Crljenica, University of Zagreb

ICPS 2003, Odense - Denmark

Light Pollution is all the light that doesn’t

illumiates what it should

It is mainly produced by improper public lightning

Zagreb, 11:54 PM

Los Angeles, 00:26 AM

Light Pollution examples in the

world…

…and in our country

Light pollution in Europe in 1997…

…and the prevision for 2025.

Measurement setup

• Increased mobility• Larger analysis area – app 200 km2/night

CCD camera

- 250 s exposition

GPS device

Data Aquisition

Raw Data

Image processing

Data Analysis

Data interpolation

Analysied area

app 900km2

2003.2002.

Comparison with last year’s results

Difference:

3D view of all measurements

2003.2002.

Difference:

Sky Glow decrement by radius

city boundary

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%

Population distribution

Sky Glow – Population dependancy

Sky Glow distribution

Sky Glow Local Monitoring group website:www.fizika.org/sglm

Ivica Crljenica, University of Zagrebicrljen@fizika.org