Records |
Author |
Elvidge, C.D.; Imhoff, M.L.; Baugh, K.E.; Hobson, V.R.; Nelson, I.; Safran, J.; Dietz, J.B.; Tuttle, B.T. |
Title |
Night-time lights of the world: 1994–1995 |
Type |
Journal Article |
Year |
2001 |
Publication |
ISPRS Journal of Photogrammetry and Remote Sensing |
Abbreviated Journal |
ISPRS Journal of Photogrammetry and Remote Sensing |
Volume |
56 |
Issue |
2 |
Pages |
81-99 |
Keywords |
Remote Sensing |
Abstract |
The Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS) has a unique low-light imaging capability developed for the detection of clouds using moonlight. In addition to moonlit clouds, the OLS also detects lights from human settlements, fires, gas flares, heavily lit fishing boats, lightning and the aurora. By analysing the location, frequency, and appearance of lights observed in an image time series, it is possible to distinguish four primary types of lights present at the earth's surface: human settlements, gas flares, fires, and fishing boats. We have produced a global map of the four types of light sources as observed during a 6-month time period in 1994–1995. We review a number of environmental applications that have been developed or proposed based on the night-time light data. We examine the relationship between area of lighting, population, economic activity, electric power consumption, and energy related carbon emissions for 200 nations, representing 99% of the world's population. |
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0924-2716 |
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GFZ @ kyba @ |
Serial |
2009 |
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Author |
Kurvers, R.H.J.M.; Drägestein, J.; Hölker, F.; Jechow, A.; Krause, J.; Bierbach, D. |
Title |
Artificial Light at Night Affects Emergence from a Refuge and Space Use in Guppies |
Type |
Journal Article |
Year |
2018 |
Publication |
Scientific Reports |
Abbreviated Journal |
Sci Rep |
Volume |
8 |
Issue |
1 |
Pages |
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Keywords |
Animals |
Abstract |
Artificial light at night (ALAN) is a major form of anthropogenic pollution. ALAN is well known to affect different behaviours during nighttime, when changes in light conditions often have immediate consequences for the trade-offs individuals experience. How ALAN affects daytime behaviours, however, has received far less attention. Here we studied how ALAN affected daytime personality traits and learning ability. We exposed Trinidadian guppies, Poecilia reticulata, for 10 weeks to different ALAN levels: bright light (24 hrs bright light, ~5,000 lx), dim light (12 hrs bright light; 12 hrs dim light, ~0.5 lx) and control (12 hrs bright light; 12 hrs dark). Afterwards, we tested how the treatments affected diurnal emergence from a refuge, space use, activity, sociability and the ability to memorize the location of companion fish. Individuals exposed to the light treatments (both dim and bright light) emerged quicker from a refuge and fish from the bright light treatment spent relatively more time in the open area of the arena. ALAN did not affect any of the other behaviours, although memory could not be tested since fish did not learn the companions’ location. Our results demonstrate that ALAN, next to affecting nocturnal behaviours, can also affect key diurnal behavioural processes, associated with risk-taking. |
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2045-2322 |
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GFZ @ kyba @ |
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2013 |
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Author |
Kinzey, B.R.; Perrin, T.E.; Miller, N.J.; Kocifaj, M.; Aubé, M.; Lamphar, H.A. |
Title |
An investigation of LED street lighting's impact on sky glow |
Type |
Journal Article |
Year |
2017 |
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Volume |
PNNL-26411 |
Issue |
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Pages |
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Keywords |
Skyglow; Lighting |
Abstract |
A significant amount of public attention has recently focused on perceived impacts of converting street lighting from incumbent lamp-based products to LED technology. Much of this attention pertains to the higher content of short wavelength light (commonly referred to as “blue light”) of LEDs and its attendant influences on sky glow (a brightening of the night sky that can interfere with astronomical observation and may be associated with a host of other issues). The complexity of this topic leads to common misunderstandings and misperceptions among the public, and for this reason the U.S. Department of Energy Solid-State Lighting Program embarked on a study of sky glow using a well-established astronomical model to investigate some of the primary factors influencing sky glow. This report details the results of the investigation and attempts to present those results in terms accessible to the general lighting community. The report also strives to put the results into a larger context, and help educate interested readers on various topics relevant to the issues being discussed. |
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Pacific Northwest National Lab. (PNNL), Richland, WA (United States) |
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GFZ @ kyba @ |
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2014 |
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Author |
Du, J.; Zhang, X.; King, D. |
Title |
An investigation into the risk of night light pollution in a glazed office building: The effect of shading solutions |
Type |
Journal Article |
Year |
2018 |
Publication |
Building and Environment |
Abbreviated Journal |
Building and Environment |
Volume |
145 |
Issue |
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Pages |
243-259 |
Keywords |
Lighting; Planning |
Abstract |
Light pollution has been recognised as a major environmental problem in urban areas at night. This study presents an investigation into the impact of seven various shading solutions on the risk of light pollution caused by indoor artificial lighting in a fully glazed office building. Radiance, a ray-tracing package, was adopted to calculate external illuminances produced by indoor lighting applications at various positions. It has been determined that: 1) A glazed façade could become a critical source of light pollution or obtrusive light (sky glow and light trespass) due to applications of indoor lighting at night; 2) A light shelf could perform well on the protection of both light trespass and sky glow; 3) A large overhang and horizontal louvre could effectively lower the risk of light trespass, but would possibly cause the deterioration of sky glow; and 4) No significant impact of short overhang and vertical louvre can be found on the two aspects of light pollution. This study exposes a significant implication; apart from their principal functions, the shading devices applied in a largely glazed building may require a new role in controlling obtrusive light in cities at night. |
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0360-1323 |
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GFZ @ kyba @ |
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2015 |
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Author |
Desaulniers, J.; Desjardins, S.; Lapierre, S.; Desgagné, A. |
Title |
Sleep Environment and Insomnia in Elderly Persons Living at Home |
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Journal Article |
Year |
2018 |
Publication |
Journal of Aging Research |
Abbreviated Journal |
Journal of Aging Research |
Volume |
2018 |
Issue |
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Pages |
1-7 |
Keywords |
Human Health |
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2090-2204 |
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GFZ @ kyba @ |
Serial |
2016 |
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