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Author Aubé, M. url  openurl
  Title Light pollution modeling and detection in a heterogeneous environment Type Journal Article
  Year 2007 Publication Proceedings of Starlight 2007 conference. La Palma, Spain. Abbreviated Journal  
  Volume Issue Pages (up)  
  Keywords Skyglow  
  Abstract Few attempts have been made to measure aerosol optical depth (AOD) behaviour

during the night. One such method uses spectrally calibrated stars as reference targets

but the available number of stars is limited. This is especially true for urban sites where

artificial lighting hide most of these stars. In our research we attempt to provide an

alternate method one which exploits the artificial sky glow generated by light pollution.

To achieve that goal, we designed a new methodology which links a 3D light

pollution model with in situ light pollution spectral measurements obtained with our

detector called Spectrometer for aerosol night detection (SAND). The basic idea was to

adjust an AOD value into the model in order to fit the measured artificial sky brightness.

This method requires an accurate model that includes spatial heterogeneity in lighting

angular geometry, in lighting spectral dependence, in ground spectral reflectance and

in topography along with a detailed definition of the vertical atmospheric profile. This

model, named ILLUMINA, computes 1st and 2nd order molecular and aerosol scattering

as well as aerosol absorption. A correction for sub grid obstacles is also included.

These model features represent major improvements to previous light pollution models.

Therefore, new possibilities for light pollution studies will arise, many of which are of

particular interest to the astronomical community. In this paper we will present model

and detector features and some of the first results derived from ILLUMINA model. We

will also present our web based spatio-temporal Sky spectral luminance measurements

database project.
 
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  Call Number LoNNe @ kagoburian @ Serial 552  
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Author Aubé, M.; Franchomme-Fossé, L.; Robert-Staehler, P.; Houle, V. url  doi
openurl 
  Title Light pollution modeling and detection in a heterogeneous environment: toward a night time aerosol optical depth retrieval method. Type Journal Article
  Year 2005 Publication Proceedings of SPIE 2005 -- Volume 5890, San Diego, California, USA. Abbreviated Journal  
  Volume 5890 Issue Pages (up)  
  Keywords Skyglow; aerosol optical depth;  remote sensing; light pollution; artificial skyglow  
  Abstract Tracking the Aerosol Optical Depth (AOD) is of particular importance in monitoring aerosol contributions to global radiative forcing. Until now, the two standard techniques used for retrieving AOD were; (i) sun photometry, and (ii) satellite based approaches, such as based DDV (Dense Dark Vegetation) inversion algorithms. These methods are only available for use during daylight time since they are based on direct or indirect observation of sunlight. Few attempts have been made to measure AOD behaviour at night. One such method uses spectrally ­ calibrated stars as reference targets but the number of available stars is limited. This is especially true for urban sites where artificial lighting hides most  of these stars. In this research, we  attempt  to provide an alternate method, one  which exploits artificial sky glow or light pollution. This methodology links a 3D light pollution model with in situ light pollution measurements. The basic idea is to adjust an AOD value into the model in order to fit measured light pollution. This method requires an accurate model that includes spatial heterogeneity in lighting angular geometry, in lighting spectral dependence, in ground spectral reflectance and in topography. This model, named ILLUMINA, computes 1st and 2nd order molecular and aerosol scattering, as well as aerosol absorption. These model features represent major improvements to previous light pollution models. Therefore, new possibilities for light pollution studies will arise, many of which are of particular interest to the astronomical community. In this paper we will present a first sensitive study applied to the ILLUMINA model.  
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  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 554  
Permanent link to this record
 

 
Author Walker, M.F. url  openurl
  Title The effects of urban lighting on the brightness of the night sky Type Journal Article
  Year 1977 Publication Publications of the Astronomical Society of the Pacific Abbreviated Journal  
  Volume 89 Issue 529 Pages (up)  
  Keywords Skyglow  
  Abstract A new study of urban lighting and its effect on the brightness of the night sky indicates: (1) The total light output of cities of similar economic development is at least approximately proportional to their populations. (2) The artificial illumination of the night sky at 45 ° altitude in the direction of the illuminating city varies as I∝ D¯²⁵ .(3) The distance at which cities of a given population produce a brightening of the sky of 0.2 magnitude at 45° altitude toward the city varies as P∝ D2.5 .  
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  Call Number LoNNe @ kagoburian @ Serial 561  
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Author Aubrecht, C.; Elvidge, C. D.; Ziskin, D.; Longcore, T.; Rich, C. url  openurl
  Title 'When the lights stay on' – A novel approach to assessing human impact on the environment. Earth. Type Journal Article
  Year 2008 Publication Earthzine Abbreviated Journal  
  Volume Issue Pages (up)  
  Keywords Ecology  
  Abstract A consequence of the explosive expansion of human civilization has been the global loss of biodiversity and changes to life-sustaining geophysical processes of Earth. The footprint of human occupation is uniquely visible from space in the form of artificial night lighting – ranging from the burning of the rainforest to massive offshore fisheries to omnipresent lights of cities, towns, and villages. This article describes a novel approach to assessing global human impact using satellite observed nighttime lights. The results provide reef managers and governments a first-pass screening tool for reef conservation projects. Sites requiring restoration and precautionary actions can be identified and assessed further in more focused investigations. We hope to create a mental picture for others to see and encourage participation in maintaining and restoring the natural world.  
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  Call Number LoNNe @ schroer @ Serial 569  
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Author BUWAL, W. U. L. url  openurl
  Title Empfehlungen zur Vermeidung von Lichtemissionen Type Journal Article
  Year 2005 Publication Abbreviated Journal  
  Volume Issue Pages (up)  
  Keywords Regulations  
  Abstract  
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  Notes Approved no  
  Call Number LoNNe @ schroer @ Serial 572  
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