{"id":453,"date":"2017-05-04T09:57:00","date_gmt":"2017-05-04T07:57:00","guid":{"rendered":"https:\/\/kids.esa.int\/esa_satellites_track_antarctic_ice\/"},"modified":"2026-10-08T00:28:23","modified_gmt":"2026-10-07T22:28:23","slug":"esa_satellites_track_antarctic_ice","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/esa_satellites_track_antarctic_ice\/","title":{"rendered":"ESA:n satelliitit seuraavat Etel\u00e4mantereen j\u00e4\u00e4t\u00e4"},"content":{"rendered":"<div class=\"lede\">\n<p>Tutkijat ovat k\u00e4ytt\u00e4neet maata kiert\u00e4vi\u00e4 satelliitteja seuratakseen 30 j\u00e4\u00e4tyneen j\u00e4\u00e4tik\u00f6n ryhm\u00e4\u00e4 Antarktikalla. He ovat tehneet huolestuttavan havainnon: j\u00e4\u00e4tik\u00f6t menett\u00e4v\u00e4t vuosi vuodelta yh\u00e4 enemm\u00e4n j\u00e4\u00e4t\u00e4. T\u00e4m\u00e4 on huolestuttavaa, sill\u00e4 se on merkki siit\u00e4, ett\u00e4 planeettamme l\u00e4mpenee ilmastonmuutoksen vuoksi.<\/p>\n<\/div>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"A. Hogg\/CPOM\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/05\/Part_of_the_Western_Palmer_Land_glaciers\" 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\/2017\/05\/part_of_the_western_palmer_land_glaciers\/17897311-2-eng-GB\/Part_of_the_Western_Palmer_Land_glaciers.jpg\" alt=\"Part of the Western Palmer Land glaciers\"><figcaption>Osa Western Palmer Landin j\u00e4\u00e4tik\u00f6ist\u00e4<\/figcaption><\/figure>\n<p>Tutkittuja 30 j\u00e4\u00e4tikk\u00f6\u00e4 sijaitsevat alueella, jota kutsutaan nimell\u00e4 Western Palmer Land. Suurin osa alueen j\u00e4\u00e4st\u00e4 sijaitsee itse asiassa merenpinnan alapuolella, ja jos se sulaa, sen yl\u00e4puolella olevat valtavat j\u00e4\u00e4palat voivat irrota ja ajautua pois. Jos ne ajautuvat viel\u00e4 l\u00e4mpim\u00e4mpiin meriin, ne saattavat sulaa kokonaan!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"ESA-Pierre Carril\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/05\/ESA_satellites_help_us_to_monitor_our_ever-changing_planet\" 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\/2017\/05\/esa_satellites_help_us_to_monitor_our_ever-changing_planet\/17905497-2-eng-GB\/ESA_satellites_help_us_to_monitor_our_ever-changing_planet.jpg\" alt=\"ESA satellites help us to monitor our ever-changing planet\"><figcaption>ESA:n satelliitit auttavat meit\u00e4 seuraamaan alati muuttuvaa planeettaamme<\/figcaption><\/figure>\n<p>Satelliitit ovat tarkkailleet Etel\u00e4mantereen ymp\u00e4rill\u00e4 olevia j\u00e4\u00e4tik\u00f6it\u00e4 jo yli 20 vuoden ajan. Apuna ovat olleet muun muassa ESA:n satelliitit, kuten Envisat ja Sentinel-1. Pilvet voivat est\u00e4\u00e4 satelliittien n\u00e4kym\u00e4n, mutta tutkalaitteiden avulla ne pystyv\u00e4t n\u00e4kem\u00e4\u00e4n pilvien l\u00e4pi alla olevat j\u00e4\u00e4tik\u00f6t. T\u00e4st\u00e4 huolimatta on joitakin aikoja ja paikkoja, joista tutkijoilla ei ollut satelliittitietoja. N\u00e4iden aukkojen t\u00e4ytt\u00e4miseksi he k\u00e4yttiv\u00e4t kehittynytt\u00e4 tietokonesimulaatiota ennustaakseen, mit\u00e4 j\u00e4\u00e4tik\u00f6ille oli tapahtumassa.<\/p>\n<p>ESAn satelliitit jatkavat j\u00e4\u00e4tik\u00f6iden seurantaa ottamalla valokuvia ja ker\u00e4\u00e4m\u00e4ll\u00e4 tietoja. N\u00e4m\u00e4 tiedot ovat korvaamattomia meille t\u00e4\u00e4ll\u00e4 maan p\u00e4\u00e4ll\u00e4, sill\u00e4 meid\u00e4n on tiedett\u00e4v\u00e4, miten planeettamme muuttuu ja mit\u00e4 voimme asialle tehd\u00e4!<\/p>\n<p><b>Mielenkiintoinen fakta:<\/b> 10% maapallon maapinta-alasta on j\u00e4\u00e4tik\u00f6iden peitossa!<\/p>","protected":false},"excerpt":{"rendered":"<p>Scientists have been using satellites in orbit around Earth to monitor a group of 30 frozen glaciers in Antarctica. They have made a troubling discovery: the glaciers are losing more [&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\/2017\/05\/glaciers_are_huge_pieces_of_ice_that_can_float_across_the_sea\/17896016-2-eng-GB\/Glaciers_are_huge_pieces_of_ice_that_can_float_across_the_sea.jpg","esa_banner_description":"Glaciers are huge pieces of ice that can float across the sea","esa_banner_credit":"B. Jourdain","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/05\/Glaciers_are_huge_pieces_of_ice_that_can_float_across_the_sea","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-453","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\/fi\/wp-json\/wp\/v2\/posts\/453","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=453"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/453\/revisions"}],"predecessor-version":[{"id":4489,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/453\/revisions\/4489"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=453"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=453"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=453"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=453"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=453"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=453"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=453"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}