{"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\/sv\/the_threat_of_melting_ice\/","title":{"rendered":"Hotet fr\u00e5n sm\u00e4ltande is"},"content":{"rendered":"
\n

F\u00f6r ungef\u00e4r 20 000 \u00e5r sedan var stora delar av Europa, Asien, Nord- och Sydamerika t\u00e4ckta av enorma ist\u00e4cken, vart och ett flera kilometer tjockt. Sedan dess har isen gradvis sm\u00e4lt och ist\u00e4ckena har dragit sig tillbaka. Idag finns de enda ist\u00e4ckena p\u00e5 jordens landmassor i Antarktis och Gr\u00f6nland. En del is f\u00f6rekommer ocks\u00e5 i form av glaci\u00e4rer i bergsregioner och som flytande isflak i Norra ishavet och runt Antarktis.<\/p>\n<\/div>\n

Vid f\u00f6rsta anblicken verkar dessa avl\u00e4gsna rester fr\u00e5n den senaste istiden ha liten betydelse f\u00f6r de flesta av oss idag. Inget kunde dock vara l\u00e4ngre fr\u00e5n sanningen. M\u00e5nga forskare anser att v\u00e5r planet v\u00e4rms upp till f\u00f6ljd av de v\u00e4xthusgaser som vi sl\u00e4pper ut i atmosf\u00e4ren. Om planeten blir varmare kommer ist\u00e4ckena att b\u00f6rja sm\u00e4lta, vilket kan leda till att havsniv\u00e5n stiger med kanske flera meter fram till slutet av detta \u00e5rhundrade. En s\u00e5dan h\u00f6jning skulle orsaka omfattande \u00f6versv\u00e4mningar i l\u00e5gl\u00e4nta kustomr\u00e5den och hota m\u00e5nga stora st\u00e4der.<\/p>\n

Observationer fr\u00e5n rymden tyder p\u00e5 att delar av de stora ist\u00e4ckena b\u00f6rjar sm\u00e4lta i snabbare takt. Samtidigt har nya satellitbilder visat att ovanligt stora omr\u00e5den med havsis har sm\u00e4lt under den arktiska sommaren. \u00c4ven om havsniv\u00e5n inte kommer att p\u00e5verkas av sm\u00e4ltningen av den flytande isen kommer det att ske andra viktiga milj\u00f6f\u00f6r\u00e4ndringar. Ist\u00e4cken fungerar till exempel som en spegel som reflekterar solljus och kyler jorden. Om isen f\u00f6rsvinner kommer jorden sannolikt att bli varmare och stora klimatf\u00f6r\u00e4ndringar kan intr\u00e4ffa. Djurlivet i polarregionerna kan ocks\u00e5 drabbas h\u00e5rt.<\/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\/sv\/wp-json\/wp\/v2\/posts\/1000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=1000"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1000\/revisions"}],"predecessor-version":[{"id":2143,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1000\/revisions\/2143"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1000"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1000"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1000"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1000"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1000"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1000"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1000"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}