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dc.contributor.authorSmyth, T.J.
dc.contributor.authorWright, A.E.
dc.contributor.authorEdwards-Jones, A.
dc.contributor.authorMckee, David
dc.contributor.authorQueirós, A.
dc.contributor.authorRendon, O.
dc.contributor.authorTidau, S.
dc.contributor.authorDavies, T.W.
dc.date.accessioned2023-01-13T09:59:07Z
dc.date.available2023-01-13T09:59:07Z
dc.date.issued2022-12-01
dc.description.abstractHalf of globally significant megacities are situated near the coast, exposing urban marine ecosystems to multiple stressors such as waste-water discharge containing a host of organic and inorganic pollutants, air and noise pollution. In addition to these well recognized sources, artificial light at night (ALAN) pollution is inseparable from cities but poorly quantified in marine ecosystems to date. We have developed a time- and wavelength-resolving hydrological optical model that includes solar (daylight and twilight components), lunar and ALAN source terms and propagates these spectrally through a tidally varying water column using Beer’s Law. Our model shows that for 8 globally distributed cities surface ALAN dosages are up to a factor of 6 greater than moonlight, as ALAN intensities vary little throughout the night, over monthly or seasonal cycles. Moonlight only exceeds ALAN irradiances over the ±3-day period around full moon, and particularly during the brightest moons (mid-latitude winter, at zenith). Unlike the relatively stable surface ALAN, underwater ALAN varies spectrally and in magnitude throughout the night due to tidal cycles. The extent of ALAN in-water attenuation is location-specific, driven by the season, tidal range and cycle, and water clarity. This work highlights that marine ALAN ecosystem pollution is a particularly acute global change issue near some of the largest cities in the world.en_US
dc.identifier.citationSmyth, Wright, Edwards-Jones, Mckee D, Queirós, Rendon, Tidau, Davies. Disruption of marine habitats by artificial light at night from global coastal megacities. Elementa: Science of the Anthropocene. 2022;10(1)en_US
dc.identifier.cristinIDFRIDAID 2103543
dc.identifier.doi10.1525/elementa.2022.00042
dc.identifier.issn2325-1026
dc.identifier.urihttps://hdl.handle.net/10037/28198
dc.language.isoengen_US
dc.publisherUniversity of California Pressen_US
dc.relation.journalElementa: Science of the Anthropocene
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleDisruption of marine habitats by artificial light at night from global coastal megacitiesen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)