Results 51 to 60 of about 283 (126)
Satellite Imagery Reveals Near‐Horizon Urban Light Emissions Impacting Ambient Environment
Abstract A novel method has been developed to characterize ground‐based light sources from nighttime satellite imagery. The fraction of light directed toward low elevation angles is determined relative to the total emission into the upper hemisphere. This approach aims to identify locations that exhibit an increased amount of light emission at angles ...
Miroslav Kocifaj, Ladislav Kómar
wiley +1 more source
Skyglow: Towards a Night-time Illumination Model for Urban Environments [PDF]
For night-time scenes in computer graphics there exist few consistent models or implementations for sky illumination, and those that do exist lack the feature of light pollution from artificial light sources. We present initial results for a physically-based night sky model including this "skyglow".
Tom Minor +2 more
openaire +1 more source
Safe and Truly Ecofriendly LED Lighting
ABSTRACT Truly ecofriendly and safe light‐emitting diode (LED) lighting in the built and urban environments requires the use of LED lights emitting significantly lower amount of blue light than conventional, first‐generation white LED lights. Thanks to substantial technology progress in the design and manufacturing of LEDs, this is now possible at the ...
Mario Pagliaro
wiley +1 more source
We measured the phototactic responses of insects to light at night using LED traps emitting light at four narrowband wavelengths of three intensity levels of relatively equal photon emission. Our data show an interaction between insect order and narrowband spectra, with marked differences in attraction between Lepidoptera and Diptera.
Gabriel A. Charvalakis +4 more
wiley +1 more source
Reddening the nighttime environment: Use of PC‐amber LED lighting
The use of Phosphor‐converted amber (PC‐amber) LED lamps has been widely championed as a means of reducing the environmental impacts of the use of artificial light at night. Here we argue that evidence for the efficacy of PC‐amber LEDs in such reductions is presently limited and that these lamps should not be seen as a panacea for the environmental ...
Kevin J. Gaston +2 more
wiley +1 more source
Dreamy Dwellings: How the Sleep Environment Affects Sleep Health in Adults—A Narrative Review
ABSTRACT Sufficient high‐quality, well‐timed sleep is essential to health and physical, cognitive and emotional functions. Historically, environmental factors such as threats from other beings have likely constrained sleep. Newer sources of sleep disruption include modern work schedules, climate change, light pollution and noise pollution.
Gregory David Maxwell Potter +5 more
wiley +1 more source
Night lights from space: potential of SDGSAT‐1 for ecological applications
Our study emphasizes the importance of advancing ALAN monitoring from space for ecology and conservation, and it highlights the novel opportunities of SDGSAT‐1. We discuss shortcomings that need to be resolved and identify promising avenues for sound ecological impact assessments of ALAN on ecosystems using space‐borne remote sensing.
Dominique Weber +9 more
wiley +1 more source
Coral reef fish visual adaptations to a changing world
Read the free Plain Language Summary for this article on the Journal blog. Abstract Coral reef ecosystems show fluctuations in their prevailing light environment in response to both regular (e.g. between seasons) and more prevalent stochastic events (e.g. human‐induced sediment runoff).
Abigail Shaughnessy, Fabio Cortesi
wiley +1 more source
Abstract Artificial light at night (ALAN) is a global change factor of growing relevance, yet its impact on organisms remains poorly understood. Present studies point to rather negative impacts of ALAN on species and ecosystems. Most research on ALAN uses conventional LED technology without simulating the complex spatial and temporal facets of ALAN ...
Sandra Regina Lang +3 more
wiley +1 more source
Effects of skyglow on the physiology of the Eurasian perch, Perca fluviatilis
Künstliches Licht in der Nacht (ALAN) entsteht in Zentren menschlicher Aktivität und erhellt die Nacht, wodurch biologische Rhythmen von Menschen und Wildtieren gestört werden können. Skyglow ist eine diffuse Aufhellung des Nachthimmels aufgrund von Reflexion und Streuung von ALAN, welche indirekt große Bereiche (vor-)städtischer Ökosysteme beleuchtet.
openaire +1 more source

