{"id":64761,"date":"2026-10-27T15:14:32","date_gmt":"2026-10-27T14:14:32","guid":{"rendered":"https:\/\/nilu.gnist.dev\/publikasjoner\/monitoring-of-the-atmospheric-ozone-layer-and-natural-ultraviolet-radiation-annual-report-2020\/"},"modified":"2026-10-27T15:14:32","modified_gmt":"2026-10-27T14:14:32","slug":"monitoring-of-the-atmospheric-ozone-layer-and-natural-ultraviolet-radiation-annual-report-2020","status":"publish","type":"nva_publication","link":"https:\/\/nilu.gnist.dev\/en\/publications\/monitoring-of-the-atmospheric-ozone-layer-and-natural-ultraviolet-radiation-annual-report-2020\/","title":{"rendered":"Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual Report 2020."},"content":{"rendered":"<p class=\"wp-block-paragraph\">This report summarizes the results from the Norwegian monitoring programme on stratospheric ozone and UV radiation measurements. The ozone layer has been measured at three locations since 1979: In Oslo\/Kjeller, Troms\u00f8\/And\u00f8ya and Ny-\u00c5lesund. The UV measurements started in 1995. The results show that there was a significant decrease in stratospheric ozone above Norway between 1979 and 1997. After that, the ozone layer stabilized at a level ~2% below pre-1980 level. 2020 was characterized by a strong, cold, and persistent Arctic stratospheric vortex, leading to extensive formation of Polar Stratospheric Clouds (PSCs, mother-of-pearl clouds) and chemical ozone destruction with very low ozone values and high UV levels in the exposed regions in the spring.<\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","_id":"","_status":"PUBLISHED","_sync_date":"2026-10-27 13:35:40","footnotes":""},"nva_tax_category":[923],"class_list":["post-64761","nva_publication","type-nva_publication","status-publish","hentry","nva_tax_category-report"],"acf":[],"_links":{"self":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/64761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication"}],"about":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/types\/nva_publication"}],"version-history":[{"count":0,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/64761\/revisions"}],"wp:attachment":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media?parent=64761"}],"wp:term":[{"taxonomy":"nva_tax_category","embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_tax_category?post=64761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}