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Spectroscopic differences between light sources can be used to determine which are most responsible for light pollution, but they complicate the interpretation of photometric data. The variability of Earth\u2019s atmosphere leads to difficulty in comparisons between datasets. Theoretical models provide complementary information to calibrate experiments and interpret their results. Here, we identify several shortcomings and challenges in current approaches to measuring light pollution and suggest ways forward.<\/jats:p>","DOI":"10.1126\/science.adg0473","type":"journal-article","created":{"date-parts":[[2023,6,15]],"date-time":"2023-06-15T13:59:07Z","timestamp":1686837547000},"page":"1121-1124","update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":63,"title":["Measuring and monitoring light pollution: Current approaches and challenges"],"prefix":"10.1126","volume":"380","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9277-4692","authenticated-orcid":true,"given":"Miroslav","family":"Kocifaj","sequence":"first","affiliation":[{"name":"Department of Optics, Institute of Construction and Architecture, Slovak Academy of Sciences, 845 03 Bratislava, Slovakia."},{"name":"Department of Experimental Physics, Faculty of Mathematics Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5976-6965","authenticated-orcid":true,"given":"Stefan","family":"Wallner","sequence":"additional","affiliation":[{"name":"Department of Optics, Institute of Construction and Architecture, Slovak Academy of Sciences, 845 03 Bratislava, Slovakia."},{"name":"Department of Astrophysics, University of Vienna, 1180 Wien, Austria."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7042-068X","authenticated-orcid":true,"given":"John C.","family":"Barentine","sequence":"additional","affiliation":[{"name":"Dark Sky Consulting, Tucson, AZ 85730, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_1_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/1477153513506729"},{"key":"e_1_3_1_3_2","doi-asserted-by":"publisher","DOI":"10.1098\/rstb.2014.0120"},{"key":"e_1_3_1_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jenvman.2011.06.029"},{"key":"e_1_3_1_5_2","doi-asserted-by":"publisher","DOI":"10.1890\/1540-9295(2004)002[0191:ELP]2.0.CO;2"},{"key":"e_1_3_1_6_2","doi-asserted-by":"publisher","DOI":"10.1093\/mnras\/stu992"},{"key":"e_1_3_1_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00159-021-00138-3"},{"key":"e_1_3_1_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jqsrt.2021.107574"},{"key":"e_1_3_1_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jqsrt.2018.02.038"},{"key":"e_1_3_1_10_2","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.1701528"},{"key":"e_1_3_1_11_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.abq7781"},{"key":"e_1_3_1_12_2","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.1600377"},{"key":"e_1_3_1_13_2","doi-asserted-by":"publisher","DOI":"10.3390\/su12062551"},{"key":"e_1_3_1_14_2","doi-asserted-by":"publisher","DOI":"10.5751\/ES-03685-150413"},{"key":"e_1_3_1_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.scs.2023.104465"},{"key":"e_1_3_1_16_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41550-022-01756-2"},{"key":"e_1_3_1_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2019.111443"},{"key":"e_1_3_1_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jqsrt.2017.09.008"},{"key":"e_1_3_1_19_2","doi-asserted-by":"publisher","DOI":"10.1093\/mnras\/staa323"},{"key":"e_1_3_1_20_2","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-022-21460-5"},{"key":"e_1_3_1_21_2","doi-asserted-by":"publisher","DOI":"10.3390\/s19061336"},{"key":"e_1_3_1_22_2","doi-asserted-by":"publisher","DOI":"10.3390\/rs13224623"},{"key":"e_1_3_1_23_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jqsrt.2018.03.010"},{"key":"e_1_3_1_24_2","first-page":"46","article-title":"Measuring the Night Sky Brightness with the Lightmeter","volume":"41","author":"M\u00fcller A.","year":"2011","unstructured":"A. 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