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Author Bará, S.; Tapia, C.; Zamorano, J. url  doi
openurl 
  Title Absolute Radiometric Calibration of TESS-W and SQM Night Sky Brightness Sensors Type Journal Article
  Year 2019 Publication (down) Sensors Abbreviated Journal Sensors  
  Volume 19 Issue 6 Pages 1336  
  Keywords Instrumentation; calibration; SQM; TESS; photometer; sky brightness  
  Abstract We develop a general optical model and describe the absolute radiometric calibration of the readings provided by two widely-used night sky brightness sensors based on irradiance-to-frequency conversion. The calibration involves the precise determination of the overall spectral sensitivity of the devices and also the constant G relating the output frequency of the light-to-frequency converter chip to the actual band-weighted and field-of-view averaged spectral radiance incident on the detector (brightness). From these parameters, we show how to define a rigorous astronomical absolute photometric system in which the sensor measurements can be reported in units of magnitudes per square arcsecond with precise physical meaning.  
  Address Departmento Física Aplicada, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain; salva.bara(at)usc.es  
  Corporate Author Thesis  
  Publisher MDPI Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1424-8220 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 2263  
Permanent link to this record
 

 
Author Coesfeld, J.; Kuester, T.; Kuechly, H.U.; Kyba, C.C.M. url  doi
openurl 
  Title Reducing Variability and Removing Natural Light from Nighttime Satellite Imagery: A Case Study Using the VIIRS DNB Type Journal Article
  Year 2020 Publication (down) Sensors Abbreviated Journal Sensors  
  Volume 20 Issue 11 Pages 3287  
  Keywords Remote Sensing; Instrumentation  
  Abstract Temporal variation of natural light sources such as airglow limits the ability of night light sensors to detect changes in small sources of artificial light (such as villages). This study presents a method for correcting for this effect globally, using the satellite radiance detected from regions without artificial light emissions. We developed a routine to define an approximate grid of locations worldwide that do not have regular light emission. We apply this method with a 5 degree equally spaced global grid (total of 2016 individual locations), using data from the Visible Infrared Imaging Radiometer Suite (VIIRS) Day-Night Band (DNB). This code could easily be adapted for other future global sensors. The correction reduces the standard deviation of data in the Earth Observation Group monthly DNB composites by almost a factor of two. The code and datasets presented here are available under an open license by GFZ Data Services, and are implemented in the Radiance Light Trends web application.  
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  ISSN 1424-8220 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2988  
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Author Guilford, T., Padget, O., Bond, S., & Syposz, M. M. url  openurl
  Title Light pollution causes object collisions during local nocturnal manoeuvring flight by adult Manx Shearwaters Puffinus puffinus Type Journal Article
  Year 2019 Publication (down) Seabird Abbreviated Journal  
  Volume 31 Issue Pages 48-55  
  Keywords Animals  
  Abstract Understanding the detrimental effects of anthropogenic light on nocturnally mobile animals is a long-standing problem in conservation biology. Seabirds such as shearwaters and petrels can be especially affected, perhaps because of their propensity to fly close to the surface, making them vulnerable to encountering anthropogenic light sources. We investigated the influence of light pollution on adult Manx Shearwaters Puffinus puffinus at close range in foggy conditions. We recorded collisions with a building at a breeding colony for six consecutive pairs of intervals in which the house lights were left on as normal for 135 seconds, then turned off for 135 seconds. The relationship between lighting condition and collision frequency was highly significant, with a collision rate in the presence of lighting around 25 times that in its absence. Our results show that birds were clearly affected by the lights, by being either directly attracted, or disorientated during flight close to the structure. This could have been due to the light source itself, or an indirect effect of the all-round reflective glow in the fog perhaps interfering with visual or magnetic control inputs on both sides of the bird simultaneously. Our results suggest a mechanism by which the screening of artificial lights close to shearwater breeding areas, at least during foggy nights, could lead to improved welfare and survival at breeding colonies.  
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  Notes Approved no  
  Call Number IDA @ intern @ Serial 2357  
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Author Boyce, P.R. url  doi
openurl 
  Title The Present and Future of Lighting Research Type Journal Article
  Year 2018 Publication (down) SDAR* Journal of Sustainable Design & Applied Research Abbreviated Journal  
  Volume 6 Issue 1 Pages  
  Keywords Commentary; Lighting; Vision; Human Health  
  Abstract The aim of this paper is to consider where lighting research is today and what its future might be. There is little doubt that, today, lighting research is an active field. A brief review of the topics being studied reveals that they range from residual studies on visibility and visual discomfort, through attempts to identify the influence of lighting on factors beyond visibility such as mood and behaviour, to the whole new field of light and health. But activity alone is not enough to justify a future. For lighting research to have a future it is necessary for it to

be influential. To become influential, research needs to focus its attention on outcomes that matter to people and the elements of those outcomes on which lighting is known to have a major influence. Further, researchers will have to be determined to overcome the barriers to changing lighting practice. By doing this, lighting research may change the world for the better, to be an important topic, not an irrelevance.
 
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  Notes Approved no  
  Call Number NC @ ehyde3 @ Serial 2113  
Permanent link to this record
 

 
Author Fouchard, M., Hébrard, J.-P., Geoffroy, D., & Ponel, P. url  openurl
  Title Contribution à la connaissance des communautés d'Hétérocères et de Coléoptères crépusculaires et nocturnes de l’île de Porquerolles (archipel des îles d'Hyères, département du Var) en lien avec les milieux Type Journal Article
  Year 2019 Publication (down) Scientific reports of the Port-Cros national park Abbreviated Journal  
  Volume 33 Issue Pages 127-162  
  Keywords Ecology  
  Abstract À l’initiative de la municipalité d’Hyères-les-Palmiers et du Parc national de Port-Cros, une étude sur la qualité de la nuit à Porquerolles a été lancée par l’Association Nationale pour la Protection du Ciel et de l’Environnement Nocturnes (ANPCEN) en 2016. L’objectif de cette étude est de tendre vers un éclairage efcace tout en limitant son impact sur l’environnement. La présente étude entre dans le cadre de ce projet. Son objectif est d’améliorer les connaissances sur les Hétérocères et les Coléoptères crépusculaires et nocturnes de Porquerolles et d’analyser les résultats par rapport à la problématique de la pollution lumineuse. Trois points de relevé (jardin Emmanuel Lopez, bassins de lagunage, fort de la Repentance), représentatifs de différents milieux et de différentes expositions à la pollution lumineuse ont été étudiés lors de 4 sessions en 2016/2017. La qualité de la nuit selon l’étude de l’ANPCEN est moins bonne au jardin Emmanuel Lopez par rapport au bassin de lagunage et au fort de la Repentance, ce dernier étant le point ayant la meilleure qualité de nuit. Au total, 93 espèces de Coléoptères et 64 espèces d’Hétérocères ont été observées sur l’île de Porquerolles. Pour les Hétérocères, un gradient de richesse spécique est observé du point le plus exposé à la pollution lumineuse à celui qui est le moins exposé, avec 21 espèces pour le jardin Emmanuel Lopez (point n°1), 35 pour le bassin de lagunage (point n°2) et 57 pour le fort de la Repentance (point n°3). Pour les Coléoptères en revanche, le point n°1 est aussi riche que le n° 3 avec 56 espèces pour chacun alors que le point n°2 ne comporte que 38 espèces. Une fois les pistes d’actions proposées par l’ANPCEN pour la réduction des pollutions mises en place sur l’île de Porquerolles, il sera intéressant de réaliser — 128 —une nouvelle campagne d’inventaires selon le même protocole an d’identier une éventuelle évolution de la diversité et de l’abondance en Hétérocères et en Coléoptères.  
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  Publisher Place of Publication Editor  
  Language French Summary Language Original Title  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ intern @ Serial 2955  
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