{"id":1017,"date":"2010-02-18T14:27:00","date_gmt":"2010-02-18T13:27:00","guid":{"rendered":"https:\/\/kids.esa.int\/cryosat_esa_s_eye_on_earth_s_ice\/"},"modified":"2026-10-08T00:34:55","modified_gmt":"2026-10-07T22:34:55","slug":"cryosat_esa_s_eye_on_earth_s_ice","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/cryosat_esa_s_eye_on_earth_s_ice\/","title":{"rendered":"CryoSat \u2013 ESAs \u00f8ye p\u00e5 jordens is"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA skal snart skyte opp den mest avanserte satellitten noensinne for \u00e5 m\u00e5le Jordens isdekke. CryoSat-oppdraget har f\u00e5tt en ny sjanse etter at den f\u00f8rste satellitten gikk tapt p\u00e5 grunn av en feil i b\u00e6reraketten i oktober 2005. N\u00e5 er den nye, forbedrede CryoSat-2 klar for oppskyting 8. april. Den skal settes inn i en pol\u00e6r bane, 700 km over jorden, av en russisk Dnepr-rakett som skal skytes opp fra Baikonur-kosmodromen i Kasakhstan.<\/p>\n<\/div>\n<p>Isdekket har i mange \u00e5r blitt kartlagt fra rommet ved hjelp av satellitter som Envisat. De nylige rekordlave verdiene for arealet dekket av arktisk havis om sommeren tyder p\u00e5 at det skjer betydelige endringer p\u00e5 toppen av verden. Men dette gir ikke et fullstendig bilde av hvordan klimaendringene kan p\u00e5virke polaromr\u00e5dene. Forskere er ogs\u00e5 opptatt av \u00e5 finne ut hvordan isens tykkelse endrer seg. Isdekkene p\u00e5 land er mange kilometer tykke. Hvis de begynner \u00e5 forsvinne, kan det f\u00f8re til store havniv\u00e5stigninger, med oversv\u00f8mmelser av kystomr\u00e5der, inkludert store byer.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"4647\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/01\/Canadian_Arctic_and_Greenland_as_seen_by_Envisat2\" 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\/2010\/01\/canadian_arctic_and_greenland_as_seen_by_envisat2\/17912740-2-eng-GB\/Canadian_Arctic_and_Greenland_as_seen_by_Envisat.jpg\" alt=\"Canadian Arctic and Greenland as seen by Envisat\"><\/figure>\n<p>CryoSat er den ideelle isobservat\u00f8ren. Den er utstyrt med et allv\u00e6rs-mikrob\u00f8lgeradarinstrument som fanger opp ekkoene fra korte radarimpulser som reflekteres fra isoverflaten. Instrumentet kan med stor n\u00f8yaktighet m\u00e5le eventuelle variasjoner i tykkelsen p\u00e5 isen som flyter p\u00e5 polarhavene. Den vil ogs\u00e5 holde n\u00f8ye \u00f8ye med de enorme ismassene som dekker Gr\u00f8nland og Antarktis. I l\u00f8pet av de neste tre til fem \u00e5rene vil satellitten registrere endringer s\u00e5 sm\u00e5 som \u00e9n centimeter per \u00e5r.<\/p>","protected":false},"excerpt":{"rendered":"<p>ESA is about to launch the most advanced satellite ever to measure Earth\u2019s ice cover. The CryoSat mission has come back from the dead after the first satellite was lost [&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\/2009\/09\/cryosat2\/17868562-2-eng-GB\/CryoSat.jpg","esa_banner_description":"CryoSat","esa_banner_credit":"ESA\/P. 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