Records |
Author |
Hölker, F.; Moss, T.; Griefahn, B.; Kloas, W.; Voigt, C.; et al. |
Title |
The Dark Side of Light: A Transdisciplinary Research Agenda for Light Pollution Policy |
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Journal Article |
Year |
2010 |
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Ecol Soc |
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15 |
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4 |
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Ecology; artificial light; energy efficiency; lighting concept; light pollution; nightscape; policy; sustainability; transdisciplinary |
Abstract |
Although the invention and widespread use of artificial light is clearly one of the most important human technological advances, the transformation of nightscapes is increasingly recognized as having adverse effects. Night lighting may have serious physiological consequences for humans, ecological and evolutionary implications for animal and plant populations, and may reshape entire ecosystems. However, knowledge on the adverse effects of light pollution is vague. In response to climate change and energy shortages, many countries, regions, and communities are developing new lighting programs and concepts with a strong focus on energy efficiency and greenhouse gas emissions. Given the dramatic increase in artificial light at night (0 – 20% per year, depending on geographic region), we see an urgent need for light pollution policies that go beyond energy efficiency to include human well-being, the structure and functioning of ecosystems, and inter-related socioeconomic consequences. Such a policy shift will require a sound transdisciplinary understanding of the significance of the night, and its loss, for humans and the natural systems upon which we depend. Knowledge is also urgently needed on suitable lighting technologies and concepts which are ecologically, socially, and economically sustainable. Unless managing darkness becomes an integral part of future conservation and lighting policies, modern society may run into a global self-experiment with unpredictable outcomes. |
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LoNNe @ christopher.kyba @ |
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478 |
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Author |
Smalling, R.; Enright, J. |
Title |
A Crusade on HSP Amber High Mast Yields Green with Plasma |
Type |
Journal Article |
Year |
2015 |
Publication |
Energy |
Abbreviated Journal |
Energy Engr. |
Volume |
112 |
Issue |
5 |
Pages |
12-17 |
Keywords |
Lighting; Energy; lighting technology; light-emitting plasma; lighting transition; LEP; Washington |
Abstract |
Naval Facilities Engineering Command Northwest (NAVFAC NW) Public Works Department (PWD) Everett recently completed a lighting replacement project at Naval Station (NS) Everett, Washington, utilizing a utility energy service contract (UESC) with Bonneville Power Administration (BPA). The project replaced 74 high pressure sodium (HPS) light fixtures with modern energy saving, light-emitting plasma (LEP) fixtures atop 80-foot light poles along the piers and wharf at NS Everett. The no-glare LEP bulbs last twice as long while using less than half the power of their HPS predecessors. This project was completed at a cost of $160,000 and will result in cost avoidances in annual operating and maintenance of over $16,000, with a payback under 10 years. This UESC-financed and executed project saves one percent of the total shore energy consumption cost. Through similar efficiency projects and energy conservation efforts, NS Everett has reduced power usage by 16 percent in the past year and 40 percent since 2003. |
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2000 West Marine View Drive, Bldg 2000, Rm 242 Everett, WA 98207 |
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Taylor & Francis |
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English |
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IDA @ john @ |
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1219 |
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Author |
Cinzano, P. |
Title |
Technical Measures for an effective limitation of the effects of light pollution. |
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2002 |
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Lighting |
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LoNNe @ schroer @ |
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574 |
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Cinzano, P.; Javier, F.; Castro, D.; Astronomia, D.; Padova, U. |
Title |
The artificial sky luminance and the emission angles of the upward light flux. |
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1998 |
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arXiv preprint astro-ph |
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The direction of the upward light emission has different polluting effects on the sky depending on the distance of the observation site. We studied with detailed models for light pollution propagation the ratio (bH)/(bL), at given distances from a city, between the artificial sky luminance bH produced by its upward light emission between a given threshold angle θ0 and the vertical and the artificial sky luminance bL produced by its upward light emission between the horizontal and the threshold angle θ0. Our results show that as the distance from the city increases the effects of the emission at high angles above the horizontal decrease relative to the effects of emission at lower angles above the horizontal. Outside some kilometers from cities or towns the light emitted between the horizontal and 10\deg ~is as important as the light emitted at all the other angles in producing the artificial sky luminance. Therefore the protection of a site requires also a careful control of this emission which needs to be reduced to at most 1/10 of the remaining emission. The emission between the horizontal and 10\deg ~is mostly produced by spill light from luminaires, so fully shielded fixtures (e.g. flat glass luminaires or asymmetric spot-lights installed without any tilt) are needed for this purpose. |
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LoNNe @ schroer @ |
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575 |
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Author |
Bisketzis, N.; Polymeropoulos, G.; Topalis, F. V. |
Title |
A Mesopic Vision Approach for a Better Design of Road Lighting. |
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Journal Article |
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2004 |
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WSEAS Transactions on Circuits and Systems |
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3 |
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5 |
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1380â1385 |
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Lighting |
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LoNNe @ kagoburian @ |
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626 |
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