{"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\/cs\/cryosat_esa_s_eye_on_earth_s_ice\/","title":{"rendered":"CryoSat \u2013 oko ESA up\u0159en\u00e9 na led na Zemi"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA se chyst\u00e1 vypustit nejmodern\u011bj\u0161\u00ed dru\u017eici, jak\u00e1 kdy byla vyvinuta pro m\u011b\u0159en\u00ed ledov\u00e9ho pokryvu Zem\u011b. Mise CryoSat se vr\u00e1tila na sc\u00e9nu pot\u00e9, co byla prvn\u00ed dru\u017eice ztracena v d\u016fsledku selh\u00e1n\u00ed nosn\u00e9 rakety v \u0159\u00edjnu 2005. Nyn\u00ed je nov\u00fd, vylep\u0161en\u00fd CryoSat-2 p\u0159ipraven ke startu 8. dubna. Bude um\u00edst\u011bn na pol\u00e1rn\u00ed ob\u011b\u017enou dr\u00e1hu ve v\u00fd\u0161ce 700 km nad Zem\u00ed pomoc\u00ed rusk\u00e9 rakety Dn\u011bpr, kter\u00e1 bude vypu\u0161t\u011bna z kosmodromu Bajkonur v Kazachst\u00e1nu.<\/p>\n<\/div>\n<p>Ledov\u00fd pokryv je ji\u017e mnoho let mapov\u00e1n z vesm\u00edru pomoc\u00ed satelit\u016f, jako je nap\u0159\u00edklad Envisat. Ned\u00e1vn\u00e9 rekordn\u011b n\u00edzk\u00e9 hodnoty plochy pokryt\u00e9 arktick\u00fdm mo\u0159sk\u00fdm ledem v l\u00e9t\u011b nazna\u010duj\u00ed, \u017ee na severn\u00edm p\u00f3lu doch\u00e1z\u00ed k v\u00fdznamn\u00fdm zm\u011bn\u00e1m. To v\u0161ak nevypov\u00edd\u00e1 o cel\u00e9m rozsahu toho, jak mohou klimatick\u00e9 zm\u011bny ovliv\u0148ovat pol\u00e1rn\u00ed oblasti. V\u011bdci se tak\u00e9 sna\u017e\u00ed zjistit, jak se m\u011bn\u00ed tlou\u0161\u0165ka ledu. Ledov\u00e9 \u0161t\u00edty na pevnin\u011b dosahuj\u00ed hloubky mnoha kilometr\u016f. Pokud by za\u010daly mizet, mohlo by doj\u00edt k v\u00fdrazn\u00e9mu zv\u00fd\u0161en\u00ed hladiny mo\u0159e a n\u00e1sledn\u00e9mu zaplaven\u00ed pob\u0159e\u017en\u00edch oblast\u00ed, v\u010detn\u011b velk\u00fdch m\u011bst.<\/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 je ide\u00e1ln\u00edm pozorovatelem ledu. Je vybaven mikrovlnn\u00fdm radarem, kter\u00fd funguje za ka\u017ed\u00e9ho po\u010das\u00ed a zachycuje odrazy kr\u00e1tk\u00fdch radarov\u00fdch impulz\u016f od povrchu ledu. Tento p\u0159\u00edstroj dok\u00e1\u017ee s velkou p\u0159esnost\u00ed m\u011b\u0159it jak\u00e9koli zm\u011bny v tlou\u0161\u0165ce ledu plovouc\u00edho na pol\u00e1rn\u00edch oce\u00e1nech. Bude tak\u00e9 pe\u010dliv\u011b sledovat rozs\u00e1hl\u00e9 ledov\u00e9 \u0161t\u00edty pokr\u00fdvaj\u00edc\u00ed Gr\u00f3nsko a Antarktidu. V pr\u016fb\u011bhu p\u0159\u00ed\u0161t\u00edch t\u0159\u00ed a\u017e p\u011bti let bude satelit detekovat zm\u011bny ji\u017e od jednoho centimetru ro\u010dn\u011b.<\/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. Carril","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/09\/CryoSat2","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-1017","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\/cs\/wp-json\/wp\/v2\/posts\/1017","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/comments?post=1017"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/1017\/revisions"}],"predecessor-version":[{"id":4799,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/1017\/revisions\/4799"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=1017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=1017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=1017"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=1017"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=1017"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=1017"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=1017"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=1017"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=1017"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=1017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}