{"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\/sv\/cryosat_esa_s_eye_on_earth_s_ice\/","title":{"rendered":"CryoSat \u2013 ESA:s \u00f6ga p\u00e5 jordens is"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA st\u00e5r i begrepp att skjuta upp den mest avancerade satelliten n\u00e5gonsin f\u00f6r att m\u00e4ta jordens ist\u00e4cke. CryoSat-uppdraget har \u00e5teruppst\u00e5tt efter att den f\u00f6rsta satelliten gick f\u00f6rlorad till f\u00f6ljd av ett misslyckande med b\u00e4rraketen i oktober 2005. Nu \u00e4r den nya, f\u00f6rb\u00e4ttrade CryoSat-2 redo f\u00f6r uppskjutning den 8 april. Den kommer att placeras i en pol\u00e4r bana, 700 km ovanf\u00f6r jorden, med hj\u00e4lp av en rysk Dnepr-raket som ska skjutas upp fr\u00e5n kosmodromen Baikonur i Kazakstan.<\/p>\n<\/div>\n<p>Ist\u00e4cket har kartlagts fr\u00e5n rymden i m\u00e5nga \u00e5r med hj\u00e4lp av satelliter som Envisat. De senaste rekordl\u00e5ga v\u00e4rdena f\u00f6r den yta som t\u00e4cks av arktiskt havsis p\u00e5 sommaren tyder p\u00e5 att betydande f\u00f6r\u00e4ndringar p\u00e5g\u00e5r p\u00e5 v\u00e4rldens tak. Men detta ger inte en fullst\u00e4ndig bild av hur klimatf\u00f6r\u00e4ndringarna kan komma att p\u00e5verka polarregionerna. Forskarna \u00e4r ocks\u00e5 angel\u00e4gna om att ta reda p\u00e5 hur isens tjocklek f\u00f6r\u00e4ndras. Isarna p\u00e5 land \u00e4r flera kilometer tjocka. Om de b\u00f6rjar f\u00f6rsvinna kan det leda till stora h\u00f6jningar av havsniv\u00e5n, med \u00f6versv\u00e4mningar i kustomr\u00e5den, inklusive stora st\u00e4der.<\/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 \u00e4r den perfekta isobservat\u00f6ren. Den \u00e4r utrustad med en mikrov\u00e5gsradar som fungerar i alla v\u00e4derf\u00f6rh\u00e5llanden och som f\u00e5ngar upp ekon fr\u00e5n korta radarimpulser som studsar tillbaka fr\u00e5n isytan. Instrumentet kan med stor noggrannhet m\u00e4ta eventuella variationer i tjockleken p\u00e5 isen som flyter p\u00e5 polarhaven. Den kommer ocks\u00e5 att noggrant \u00f6vervaka de vidstr\u00e4ckta ist\u00e4cken som t\u00e4cker Gr\u00f6nland och Antarktis. Under de kommande tre till fem \u00e5ren kommer satelliten att uppt\u00e4cka f\u00f6r\u00e4ndringar s\u00e5 sm\u00e5 som en 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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