Mastodawn

Satellite Imagery Reveals Increasing Volatility In Human Night-Time Activity
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https://doi.org/10.1038/s41586-026-10260-w <-- shared paper
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https://ee-downloading.projects.earthengine.app/view/alan-change <-- shared associated web map
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https://www.theguardian.com/us-news/2026/apr/18/earth-brightness-study <-- shared technical media article
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https://svs.gsfc.nasa.gov/5634/ <-- shared NASA technical article with videos showing global change over time
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#GIS #spatial #mapping #global #spatialanalysis #spationtemporal #NightTime #lights #ALAN #artificiallightatnight #humanimpacts #remotesensing #earthobservation #change #lightradiance #dynamic #NASAEarthObservatory #NASA #monitoring #abrupt #gradual #volatility #urban #policy #planning #ecology
@nasa | @nasa Earth Observatory

Dr. John Barentine FRAS Apr 8

New today in @Nature: "Our findings challenge the prevailing perspective that changes in light radiance are largely gradual and unidirectional. Instead, the nightlights of Earth are surprisingly dynamic."

https://www.nature.com/articles/s41586-026-10260-w

And some reporting on the study and its implications by @skyandtelescope: https://skyandtelescope.org/astronomy-news/light-pollution-is-increasingly-volatile-around-the-world/

#LightPollution #ALAN #ArtificialLightAtNight #RemoteSensing #DarkSkies #NighttimeLights

Satellite imagery reveals increasing volatility in human night-time activity - Nature

Daily satellite data reveal that Earth’s artificial lights at night are highly volatile, with frequent brightening and dimming between 2014 and 2022.

Nature

John Feb 10

#nature #bats #light #artificiallight #artificiallightatnight https://www.euronews.com/green/2026/02/10/from-denmark-to-the-uk-why-european-cities-are-installing-red-street-lighting

Christopher Kyba 🇨🇦🇪🇺Jan 14

The Artificial Light at Night conference is looking for bids to host #ALAN2029: https://artificiallightatnight.org/alan2029/

#LightPollution #ArtificialLightAtNight #ALAN #NightLightsRemoteSensing

Journal of Plant Ecology Oct 21, 2025

Different intensities of #ArtificialLightAtNight (ALAN) ➡️ The growth of #InvasiveAndNativePlants 🟰 Effects❓

Results:
1️⃣ The photosynthesis of native plants is inhibited under high ALAN.
2️⃣ Invasive plants have stronger phenotypic plasticity and nitrogen-distribution strategy under ALAN.

#PhotosyntheticRate | #LeafTraits | #Biomass

https://doi.org/10.1093/jpe/rtaf075

Dr. John Barentine FRAS Oct 17, 2025

New research suggests that artificial light at night exposure in inpatient clinical settings could be a modifiable risk factor for improving #schizophrenia symptoms and preventing relapses. “ALAN exposure may increase the risk of schizophrenia relapse, potentially mediated by gut microbiota and linoleic acid metabolism.”

https://www.sciencedirect.com/science/article/pii/S0147651325015441

#HumanHealth #MentalHealth #Metabolism #ArtificialLightAtNight #ALAN #LightPollution