{"id":892,"date":"2007-09-21T10:08:00","date_gmt":"2007-09-21T08:08:00","guid":{"rendered":"https:\/\/kids.esa.int\/disappearing_arctic_ice\/"},"modified":"2026-10-08T00:33:27","modified_gmt":"2026-10-07T22:33:27","slug":"disappearing_arctic_ice","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/disappearing_arctic_ice\/","title":{"rendered":"Den forsvinner arktiske isen"},"content":{"rendered":"<div class=\"lede\">\n<p>I mer enn 500 \u00e5r har sj\u00f8farere lett etter en isfri rute mellom de arktiske \u00f8yene i Nord-Canada. Mange oppdagelsesreisende mistet livet i jakten p\u00e5 Nordvestpassasjen, som forbinder Atlanterhavet og Stillehavet. Imidlertid har den arktiske isdekken begynt \u00e5 krympe raskt. Nye radarbilder fra ESAs Envisat viser at arealet av arktisk havis n\u00e5 er p\u00e5 sitt laveste niv\u00e5 siden satellittm\u00e5lingene startet for nesten 30 \u00e5r siden. Resultatet er at den tidligere ufremkommelige Nordvestpassasjen midlertidig har \u00e5pnet seg.<\/p>\n<\/div>\n<p>Isdekket i Arktis \u00f8ker om vinteren p\u00e5 den nordlige halvkule og avtar hver sommer p\u00e5 den nordlige halvkule. Tempoet i sommerens isavsmelting \u00f8ker imidlertid. En mosaikk best\u00e5ende av nesten 200 bilder tatt av Envisat i september 2007 viste at Nordvestpassasjen var fullt farbar, mens Nord\u00f8stpassasjen langs den sibiriske kysten bare var delvis blokkert.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1186\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/09\/A_2007_ice-free_portion_of_the_Northwest_Passage2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2007\/09\/a_2007_ice-free_portion_of_the_northwest_passage2\/17885582-2-eng-GB\/A_2007_ice-free_portion_of_the_Northwest_Passage.jpg\" alt=\"A 2007 ice-free portion of the Northwest Passage\"><figcaption>En isfri del av Nordvestpassasjen i 2007<\/figcaption><\/figure>\n<p>Den danske forskeren Leif Toudal Pedersen sa: \u201cVi har sett at det isdekte omr\u00e5det har sunket til bare rundt 3 millioner kvadratkilometer, noe som er omtrent 1 million kvadratkilometer mindre enn i 2005 og 2006. I l\u00f8pet av de siste 10 \u00e5rene har isdekket blitt redusert med gjennomsnittlig rundt 100 000 kvadratkilometer per \u00e5r, s\u00e5 en nedgang p\u00e5 1 million kvadratkilometer p\u00e5 bare ett \u00e5r er ekstrem.\u201d<\/p>","protected":false},"excerpt":{"rendered":"<p>For more than 500 years, navigators have been seeking an ice-free route between the Arctic islands of northern Canada. Many explorers died in the quest to find a Northwest Passage [&hellip;]<\/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\/2007\/09\/2007_envisat_mosaic_of_arctic_ocean2\/17878848-2-eng-GB\/2007_Envisat_mosaic_of_Arctic_Ocean.jpg","esa_banner_description":"2007 Envisat mosaic of Arctic Ocean","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/09\/2007_Envisat_mosaic_of_Arctic_Ocean2","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-892","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\/892","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=892"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/892\/revisions"}],"predecessor-version":[{"id":4724,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/892\/revisions\/4724"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=892"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=892"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=892"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=892"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=892"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=892"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=892"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}