{"id":960,"date":"2006-09-21T14:41:00","date_gmt":"2006-09-21T12:41:00","guid":{"rendered":"https:\/\/kids.esa.int\/arctic_ice_is_breaking_up\/"},"modified":"2026-10-08T00:34:14","modified_gmt":"2026-10-07T22:34:14","slug":"arctic_ice_is_breaking_up","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/arctic_ice_is_breaking_up\/","title":{"rendered":"Arktinen j\u00e4\u00e4 on hajoamassa!"},"content":{"rendered":"
\n

Pohjois- ja Etel\u00e4mantereilla on ollut pysyvi\u00e4 j\u00e4\u00e4peitteit\u00e4 jo miljoonia vuosia. Maailman pohjoisimmassa kolkassa on kuitenkin meneill\u00e4\u00e4n dramaattisia muutoksia. Uusien satelliittitutkimusten mukaan arktisen alueen merij\u00e4\u00e4 on ohentunut ja hajonnut.<\/p>\n<\/div>\n

23.\u201325. elokuuta 2006 otetuissa kuvissa n\u00e4kyy ensimm\u00e4ist\u00e4 kertaa dramaattisia aukkoja pysyv\u00e4ss\u00e4 merij\u00e4\u00e4peitteess\u00e4. N\u00e4m\u00e4 aukot ulottuvat Svalbardin saarelta Ven\u00e4j\u00e4n arktisen alueen l\u00e4pi aina pohjoisnavalle asti \u2013 alue, joka on pinta-alaltaan suurempi kuin Brittein saaret.<\/p>\n

ESAn Envisat-satelliitin tutkakuvissa j\u00e4\u00e4aukot n\u00e4kyv\u00e4t tummanharmaana ja mustana. Aqua-satelliitti n\u00e4ytt\u00e4\u00e4 rikkoutuneen j\u00e4\u00e4n alueet keltaisena, oranssina ja vihre\u00e4n\u00e4. Kaiken kaikkiaan noin 5\u201310 prosenttia (jopa kymmenesosa) kes\u00e4n selvinneest\u00e4 j\u00e4\u00e4st\u00e4 rikkoutui elokuun myrskyjen seurauksena.<\/p>\n

\"Arctic
Arktisen alueen j\u00e4\u00e4peitteen laajuus vuonna 2006<\/figcaption><\/figure>\n

\u201cT\u00e4m\u00e4 tilanne poikkeaa t\u00e4ysin kaikista aiemmista enn\u00e4tyksellisen v\u00e4h\u00e4isen j\u00e4\u00e4peitteen kausista\u201d, sanoi Mark Drinkwater ESA:n meri- ja j\u00e4\u00e4yksik\u00f6st\u00e4.<\/p>\n

Drinkwaterin mukaan j\u00e4\u00e4peite on saattanut olla niin hajanaista, ett\u00e4 alus olisi voinut helposti purjehtia Siperiasta pohjoisnavalle \u2013 mik\u00e4 olisi normaalisti mahdotonta. Vasta viime viikkoina meri on alkanut j\u00e4lleen j\u00e4\u00e4ty\u00e4.<\/p>\n

Viimeisten 25 vuoden aikana satelliitit ovat havainneet, ett\u00e4 arktinen j\u00e4\u00e4peite on kutistunut yh\u00e4 enemm\u00e4n kes\u00e4n sulamiskaudella. 1980-luvun alkupuolella my\u00f6h\u00e4iskes\u00e4n j\u00e4\u00e4peite kattoi noin 8 miljoonaa neli\u00f6kilometri\u00e4. Viime vuonna sen pinta-ala oli alle 5,5 miljoonaa neli\u00f6kilometri\u00e4. N\u00e4it\u00e4 muutoksia pidet\u00e4\u00e4n yleisesti ilmaston l\u00e4mpenemisen seurauksena.<\/p>","protected":false},"excerpt":{"rendered":"

Permanent ice caps have existed at the North and South Poles for millions of years. But dramatic changes are taking place at the top of the world. New satellite surveys […]<\/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\/2006\/09\/svalbard_area_as_seen_by_envisat2\/17902419-2-eng-GB\/Svalbard_area_as_seen_by_Envisat.jpg","esa_banner_description":"Svalbard area as seen by Envisat","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/09\/Svalbard_area_as_seen_by_Envisat2","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-960","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\/960","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=960"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/960\/revisions"}],"predecessor-version":[{"id":4757,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/960\/revisions\/4757"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=960"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=960"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=960"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=960"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=960"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=960"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=960"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=960"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=960"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=960"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}