{"id":878,"date":"2005-09-09T13:37:00","date_gmt":"2005-09-09T11:37:00","guid":{"rendered":"https:\/\/kids.esa.int\/cryosat_europe_s_ice_explorer\/"},"modified":"2026-10-08T00:33:18","modified_gmt":"2026-10-07T22:33:18","slug":"cryosat_europe_s_ice_explorer","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/cryosat_europe_s_ice_explorer\/","title":{"rendered":"Cryosat: Europas isutforskare"},"content":{"rendered":"
\n

De flesta forskare \u00e4r \u00f6verens om att v\u00e5r planet blir varmare. De f\u00f6rsta tio \u00e5ren av detta \u00e5rhundrade var det varmaste decenniet som n\u00e5gonsin uppm\u00e4tts. Detta kommer sannolikt att leda till betydande f\u00f6r\u00e4ndringar av klimatet i Europa. Men hur \u00e4r det med polarisarna? Sm\u00e4lter isen? Om s\u00e5 \u00e4r fallet, vilka konsekvenser kommer detta att f\u00e5 f\u00f6r det globala klimatet och havsniv\u00e5n?<\/p>\n<\/div>\n

En europeisk satellit ger nu n\u00e5gra av svaren. Cryosat, som sk\u00f6ts upp den 8 april 2010, flyger \u00f6ver polerna p\u00e5 en h\u00f6jd av 720 km.<\/p>\n

Med hj\u00e4lp av en toppmodern radar m\u00e4ter Cryosat sm\u00e5 f\u00f6r\u00e4ndringar i istjockleken genom att s\u00e4nda ut radiosignaler som studsar mot ytan och f\u00e5nga upp ekona. Om ekona \u00e5terkommer snabbare m\u00e5ste isytan vara h\u00f6gre.<\/p>\n

Cryosat kan uppt\u00e4cka f\u00f6r\u00e4ndringar p\u00e5 mindre \u00e4n 2 cm per \u00e5r i h\u00f6jden p\u00e5 isen som flyter p\u00e5 Norra ishavet. \u00d6ver de enorma ist\u00e4ckena p\u00e5 den antarktiska kontinenten kan den m\u00e4ta \u00e5rliga f\u00f6r\u00e4ndringar p\u00e5 mindre \u00e4n 2 mm.<\/p>\n

Dessa resultat hj\u00e4lper forskarna att ta reda p\u00e5 om havsisen i Arktis bryts upp och sm\u00e4lter. De visar ocks\u00e5 om ist\u00e4ckena som t\u00e4cker Antarktis landmassa och det omgivande havet krymper eller v\u00e4xer. Detta \u00e4r viktigt eftersom havsniv\u00e5n kan stiga flera meter om ist\u00e4ckena sm\u00e4lter. M\u00e5nga l\u00e5gt bel\u00e4gna st\u00e4der och l\u00e4nder skulle d\u00e5 kunna \u00f6versv\u00e4mmas.<\/p>\n

CryoSat \u00e4r den tredje Earth Explorer-uppdraget som ska skjutas upp inom ramen f\u00f6r ESA:s Living Planet-program (efter GOCE, ESA:s gravitationsuppdrag, och SMOS, ESA:s vattenuppdrag).<\/p>","protected":false},"excerpt":{"rendered":"

Most scientists agree that our planet is getting warmer. The first 10 years of this century were the warmest decade on record. This is likely to cause important changes to […]<\/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\/2005\/06\/artist_s_impression_of_cryosat_in_orbit2\/17878071-2-eng-GB\/Artist_s_impression_of_CryoSat_in_orbit.jpg","esa_banner_description":"Artist's impression of CryoSat in orbit","esa_banner_credit":"ESA\/AOES Medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/06\/Artist_s_impression_of_CryoSat_in_orbit2","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-878","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\/sv\/wp-json\/wp\/v2\/posts\/878","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=878"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/878\/revisions"}],"predecessor-version":[{"id":2021,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/878\/revisions\/2021"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=878"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=878"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=878"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=878"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=878"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=878"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=878"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}