{"id":555,"date":"2013-12-13T08:49:00","date_gmt":"2013-12-13T07:49:00","guid":{"rendered":"https:\/\/kids.esa.int\/thinning_ice_and_rising_sea_levels\/"},"modified":"2026-10-08T00:29:35","modified_gmt":"2026-10-07T22:29:35","slug":"thinning_ice_and_rising_sea_levels","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/cs\/thinning_ice_and_rising_sea_levels\/","title":{"rendered":"Zten\u010duj\u00edc\u00ed se led a stoupaj\u00edc\u00ed hladina mo\u0159e"},"content":{"rendered":"<div class=\"lede\">\n<p>Od sv\u00e9ho vypu\u0161t\u011bn\u00ed v dubnu 2010 ob\u00edh\u00e1 kosmick\u00e1 lo\u010f CryoSat agentury ESA nad severn\u00edm a ji\u017en\u00edm p\u00f3lem na\u0161\u00ed planety. Jej\u00edm \u00fakolem je sledovat zm\u011bny v tlou\u0161\u0165ce ledu, kter\u00fd tyto oblasti pokr\u00fdv\u00e1.<\/p>\n<p>Po t\u0159ech letech pozorov\u00e1n\u00ed satelit CryoSat potvrdil, \u017ee objem arktick\u00e9ho ledu (Severn\u00ed p\u00f3l) kles\u00e1. CryoSat rovn\u011b\u017e prok\u00e1zal, \u017ee z\u00e1padn\u00ed antarktick\u00fd ledov\u00fd \u0161t\u00edt (ji\u017en\u00ed p\u00f3l) ka\u017edoro\u010dn\u011b ztr\u00e1c\u00ed v\u00edce ne\u017e 150 kubick\u00fdch kilometr\u016f ledu. To odpov\u00edd\u00e1 ledov\u00e9 desce o \u0161\u00ed\u0159ce 1 km, tlou\u0161\u0165ce 1 km a d\u00e9lce 150 km!<\/p>\n<\/div>\n<p>Obrovsk\u00e9 ledov\u00e9 pokr\u00fdvky, kter\u00e9 pokr\u00fdvaj\u00ed pol\u00e1rn\u00ed oblasti Zem\u011b, nejsou trval\u00e9. Roz\u0161i\u0159uj\u00ed se b\u011bhem chladn\u011bj\u0161\u00edch obdob\u00ed, zn\u00e1m\u00fdch jako doby ledov\u00e9, a zmen\u0161uj\u00ed se, kdy\u017e teploty stoupaj\u00ed nebo se m\u011bn\u00ed m\u00edstn\u00ed podm\u00ednky. Dokonce i antarktick\u00fd ledov\u00fd \u0161t\u00edt, kter\u00fd je tlust\u00fd t\u00e9m\u011b\u0159 3 km, m\u016f\u017ee b\u00fdt t\u00edmto jevem ovlivn\u011bn.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"3835\" data-credit=\"Planetary Visions, DTU (Greenland), UCL (Antarctica)\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/11\/Change_in_ice_sheet_thickness_per_year\" 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\/2012\/11\/change_in_ice_sheet_thickness_per_year\/17874371-2-eng-GB\/Change_in_ice_sheet_thickness_per_year.jpg\" alt=\"Change in ice sheet thickness per year\"><figcaption>Ro\u010dn\u00ed zm\u011bna tlou\u0161\u0165ky ledov\u00e9ho p\u0159\u00edkrovu<\/figcaption><\/figure>\n<p>Z\u00e1padn\u00ed Antarktida v sou\u010dasn\u00e9 dob\u011b \u010del\u00ed rychl\u00e9mu \u00fabytku ledu. Satelit CryoSat uk\u00e1zal, \u017ee k tomu doch\u00e1z\u00ed p\u0159edev\u0161\u00edm u ledovc\u016f, kter\u00e9 \u00fast\u00ed do Amundsenova mo\u0159e. Rychlost zten\u010dov\u00e1n\u00ed ledu dosahuje a\u017e 4\u20138 m za rok v m\u00edstech, kde ledovce Pine Island, Thwaites a Smith opou\u0161t\u011bj\u00ed pevninu a za\u010d\u00ednaj\u00ed plavat na hladin\u011b oce\u00e1nu.<\/p>\n<p>Dosud se m\u011blo za to, \u017ee t\u00e1n\u00ed v z\u00e1padn\u00ed Antarktid\u011b zp\u016fsobilo v letech 2005 a\u017e 2010 glob\u00e1ln\u00ed vzestup hladiny mo\u0159e o 0,28 mm ro\u010dn\u011b. Nov\u00e9 v\u00fdsledky z dru\u017eice CryoSat v\u0161ak nazna\u010duj\u00ed, \u017ee pod\u00edl t\u00e9to oblasti na vzestupu hladiny mo\u0159e je je\u0161t\u011b v\u011bt\u0161\u00ed! D\u016fvodem m\u016f\u017ee b\u00fdt bu\u010f to, \u017ee led se zten\u010duje rychleji, ne\u017e v\u011bdci p\u016fvodn\u011b p\u0159edpokl\u00e1dali, anebo to, \u017ee CryoSat poskytuje p\u0159esn\u011bj\u0161\u00ed \u00fadaje ne\u017e jin\u00e9 satelity!<\/p>","protected":false},"excerpt":{"rendered":"<p>Since its launch in April 2010, ESA\u2019s CryoSat spacecraft has been flying over the North and South Poles of our planet. Its mission is to observe changes in the thickness [&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\/2010\/01\/esa_s_ice_mission2\/17894573-2-eng-GB\/ESA_s_ice_mission.jpg","esa_banner_description":"ESA's ice mission","esa_banner_credit":"ESA\/AOES Medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/01\/ESA_s_ice_mission2","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-555","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\/555","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=555"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/555\/revisions"}],"predecessor-version":[{"id":4547,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/555\/revisions\/4547"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=555"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=555"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=555"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=555"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=555"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=555"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=555"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=555"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=555"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=555"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}