{"id":991,"date":"2006-10-03T09:01:00","date_gmt":"2006-10-03T07:01:00","guid":{"rendered":"https:\/\/kids.esa.int\/record_ozone_loss_over_south_pole\/"},"modified":"2026-10-08T00:34:36","modified_gmt":"2026-10-07T22:34:36","slug":"record_ozone_loss_over_south_pole","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/record_ozone_loss_over_south_pole\/","title":{"rendered":"Rekordstort ozontap over Sydpolen"},"content":{"rendered":"
\n

Siden 1985 har forskere overv\u00e5ket et hull i ozonlaget h\u00f8yt over Antarktis. Man hadde h\u00e5pet at ozonhullet gradvis ville bli mindre, men nye resultater fra ESAs romfart\u00f8y Envisat har avdekket det st\u00f8rste ozon tapet som noensinne er registrert.<\/p>\n<\/div>\n

M\u00e5linger utf\u00f8rt 2. oktober viste et tap p\u00e5 40 millioner tonn, noe som overgikk den forrige rekorden fra \u00e5r 2000. I tillegg dekker \u00e5rets ozonhull et omr\u00e5de p\u00e5 28 millioner kvadratkilometer, nesten like stort som hullet i 2000. Dybden p\u00e5 ozonhullet kan ogs\u00e5 m\u00e5le seg med tidligere rekordverdier.<\/p>\n

\u201cEt s\u00e5 betydelig ozontap krever sv\u00e6rt lave temperaturer i stratosf\u00e6ren, kombinert med sollys,\u201d sa ESA-forskeren Claus Zehner. \u201c\u00c5rets ekstreme ozontap kan forklares med at temperaturene over Antarktis n\u00e5dde rundt minus 92 Celsius \u2013 det laveste som er m\u00e5lt i omr\u00e5det siden 1979.\u201d<\/p>\n

\"Ozone
Ozonuttynning over Sydpolen<\/figcaption><\/figure>\n

Ozon er en form for oksygengass. Det danner et lag 25\u201340 km over jorden, i et omr\u00e5de som kalles stratosf\u00e6ren. Ozonlaget er viktig fordi det blokkerer skadelige ultrafiolette str\u00e5ler fra solen. Disse str\u00e5lene \u00f8ker risikoen for hudkreft og gr\u00e5 st\u00e6r, og p\u00e5virker livet i havet.<\/p>\n

Ozonlagets tynning skyldes menneskeskapte forurensende stoffer, som for eksempel klor, som forblir i atmosf\u00e6ren i mange \u00e5r. N\u00e5r polv\u00e5ren setter inn, frigj\u00f8r sollyset klor som er fanget i h\u00f8ytliggende skyer. Kloret \u00f8delegger deretter ozonet i raskt tempo.<\/p>\n

Hullet varer vanligvis til november eller desember, n\u00e5r ozonfattig luft over Antarktis begynner \u00e5 blande seg med ozonrik luft utenfra.<\/p>","protected":false},"excerpt":{"rendered":"

Since 1985, scientists have been monitoring a hole in the ozone layer, high above Antarctica. It had been hoped that the ozone hole will gradually shrink, but new results from […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2006\/10\/2006_ozone_hole2\/18249140-2-eng-GB\/2006_ozone_hole.gif","esa_banner_description":"2006 ozone hole","esa_banner_credit":"KNMI\/TEMIS","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/10\/2006_ozone_hole2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[64,42,10],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-991","post","type-post","status-publish","format-standard","hentry","category-climate-change","category-earth","category-learn"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=991"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/991\/revisions"}],"predecessor-version":[{"id":4782,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/991\/revisions\/4782"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=991"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=991"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=991"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=991"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=991"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=991"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=991"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}