{"id":904,"date":"2004-12-03T10:03:00","date_gmt":"2004-12-03T09:03:00","guid":{"rendered":"https:\/\/kids.esa.int\/ice_caps\/"},"modified":"2026-10-08T00:33:35","modified_gmt":"2026-10-07T22:33:35","slug":"ice_caps","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/pt\/ice_caps\/","title":{"rendered":"Calotas polares"},"content":{"rendered":"<div class=\"lede\">\n<p>A Terra \u00e9 o planeta \u2018Goldilocks\u2019. N\u00e3o \u00e9 nem demasiado quente nem demasiado fria. Por isso, o nosso mundo \u00e9 o \u00fanico lugar que conhecemos onde a \u00e1gua pode assumir a forma de g\u00e1s, l\u00edquido ou s\u00f3lido (gelo).<\/p>\n<\/div>\n<p>Normalmente, deparamo-nos com gelo no inverno, mas o gelo existe durante todo o ano nos p\u00f3los e nos cumes das montanhas altas.<\/p>\n<p>As maiores camadas de gelo em terra firme cobrem a Ant\u00e1rtida e a Gronel\u00e2ndia. Existe tamb\u00e9m uma enorme \u00e1rea de gelo no \u00c1rtico, mas esta \u00e9 bastante fina e flutua no oceano. As calotas polares e os glaciares de montanha tendem frequentemente a crescer ou a encolher. Atualmente, muitos cientistas consideram que o aquecimento global est\u00e1 a provocar o derretimento do gelo e a subida do n\u00edvel do mar, aumentando o risco de inunda\u00e7\u00f5es.<\/p>\n<p>Ao longo de um per\u00edodo prolongado, os dados de sat\u00e9lites como o ERS e o Envisat, da ESA, podem dar-nos uma ideia do que est\u00e1 a acontecer.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"341\" data-credit=\"AP Photo\/Rachel D&#x27;Oro\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/antactica_012\" 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\/2004\/12\/antactica_012\/17876220-2-eng-GB\/antactica_01.jpg\" alt=\"\"><\/figure>\n<p>As imagens tiradas do espa\u00e7o mostram a fragmenta\u00e7\u00e3o das camadas de gelo e o movimento dos icebergues. Detetam tamb\u00e9m altera\u00e7\u00f5es na temperatura e na cor do oceano. Os instrumentos de radar revelam altera\u00e7\u00f5es na espessura do gelo e no n\u00edvel global do mar. Al\u00e9m disso, ajudam os navios a navegar em seguran\u00e7a atrav\u00e9s das camadas de gelo no inverno.<\/p>","protected":false},"excerpt":{"rendered":"<p>Earth is the &#8216;Goldilocks&#8217; planet. It is neither too hot nor too cold. As a result, our world is the only place we know where water can take the form [&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\/2004\/12\/antarctica3\/17874407-2-eng-GB\/antarctica.jpg","esa_banner_description":"","esa_banner_credit":"AP Photo\/Al Grillo","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/antarctica3","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":[42,10,66],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-904","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-water-world","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/904","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/comments?post=904"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/904\/revisions"}],"predecessor-version":[{"id":4732,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/904\/revisions\/4732"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/media?parent=904"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/categories?post=904"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/tags?post=904"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/panel?post=904"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/language?post=904"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/age?post=904"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/duration?post=904"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/resource_type?post=904"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/audience?post=904"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/wf_post_folders?post=904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}