{"id":1000,"date":"2010-02-18T14:04:00","date_gmt":"2010-02-18T13:04:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_threat_of_melting_ice\/"},"modified":"2026-10-08T00:34:42","modified_gmt":"2026-10-07T22:34:42","slug":"the_threat_of_melting_ice","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/the_threat_of_melting_ice\/","title":{"rendered":"Truslen fra smeltende is"},"content":{"rendered":"
\n

For omkring 20.000 \u00e5r siden var store dele af Europa, Asien, Nord- og Sydamerika d\u00e6kket af enorme iskapper, der hver var mange kilometer tykke. Siden da er isen gradvist smeltet, og iskapperne har trukket sig tilbage. I dag findes de eneste iskapper p\u00e5 Jordens landmasser i Antarktis og Gr\u00f8nland. Der findes ogs\u00e5 is i form af gletsjere i bjergomr\u00e5der og som flydende isflager i Det Arktiske Ocean og omkring Antarktis.<\/p>\n<\/div>\n

Ved f\u00f8rste \u00f8jekast synes disse fjerne levn fra den sidste istid at have ringe betydning for de fleste af os i dag. Intet kunne dog v\u00e6re l\u00e6ngere fra sandheden. Mange forskere mener, at vores planet bliver varmere som f\u00f8lge af de drivhusgasser, vi udleder i atmosf\u00e6ren. Hvis planeten bliver varmere, vil iskapperne begynde at smelte, hvilket vil medf\u00f8re, at havniveauet stiger med m\u00e5ske flere meter inden udgangen af dette \u00e5rhundrede. En s\u00e5dan stigning vil for\u00e5rsage omfattende oversv\u00f8mmelser i lavtliggende kystomr\u00e5der og true mange store byer.<\/p>\n

Observationer fra rummet tyder p\u00e5, at dele af de store iskapper er begyndt at smelte hurtigere. Samtidig har nylige satellitbilleder ogs\u00e5 vist, at us\u00e6dvanligt store omr\u00e5der med havis er smeltet i l\u00f8bet af den arktiske sommer. Selvom havniveauet ikke vil blive p\u00e5virket af smeltningen af den flydende is, vil der ske andre vigtige milj\u00f8m\u00e6ssige forandringer. For eksempel fungerer iskapperne som et spejl, der reflekterer sollys og afk\u00f8ler Jorden. Hvis isen forsvinder, vil Jorden sandsynligvis blive varmere, og der kan opst\u00e5 store klimaforandringer. Dyrelivet i polarregionerne kan ogs\u00e5 blive h\u00e5rdt ramt.<\/p>","protected":false},"excerpt":{"rendered":"

About 20,000 years ago, much of Europe, Asia, North and South America was covered by huge sheets of ice, each many kilometres thick. Since then, the ice has gradually melted […]<\/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\/2009\/10\/iceberg2\/17899718-2-eng-GB\/Iceberg.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/10\/Iceberg2","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1000","post","type-post","status-publish","format-standard","hentry","category-climate-change","category-earth","category-learn","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=1000"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1000\/revisions"}],"predecessor-version":[{"id":2143,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1000\/revisions\/2143"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=1000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=1000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=1000"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=1000"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=1000"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=1000"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=1000"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=1000"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=1000"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=1000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}