Academics from the University of Exeter have tracked Europe’s transition to LED night lighting, which is linked to the suppression of melatonin
A widespread spectral shift from sodium lighting to white light-emitting diodes with greater blue emissions was observed across Europe
Blue light from artificial sources is rising, according to new research by the University of Exeter.
Published in Science Advances, under the title ‘Environmental risks from artificial night time lighting widespread and increasing across Europe’, scientists used imagery obtained via digital cameras by astronauts on the International Space Station to map variation in the spectral composition of lighting across Europe for 2012 to 2013 and 2014 to 2020.
The images showed a regionally widespread spectral shift from sodium lighting to white light-emitting diodes with greater blue emissions.
One of the effects of shifts in the spectra of artificial night-time lighting, the report highlights, is the suppression of melatonin production, with melatonin cycles being key components of the circadian systems of many organisms, including humans.
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