{"id":941,"date":"2004-12-16T08:24:00","date_gmt":"2004-12-16T07:24:00","guid":{"rendered":"https:\/\/kids.esa.int\/hurricanes2\/"},"modified":"2026-10-08T00:34:01","modified_gmt":"2026-10-07T22:34:01","slug":"hurricanes2","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/hurricanes2\/","title":{"rendered":"Hurrikaanit"},"content":{"rendered":"
\n

Hurrikaanit ovat maapallon mahtavimpia myrskyj\u00e4. Joka kes\u00e4 n\u00e4m\u00e4 valtavat, py\u00f6riv\u00e4t myrskyt muodostuvat l\u00e4mpim\u00e4n Atlantin valtameren yll\u00e4. Kun ne etenev\u00e4t l\u00e4nteen ja iskev\u00e4t maalle, ne j\u00e4tt\u00e4v\u00e4t j\u00e4lkeens\u00e4 tuhon.<\/p>\n<\/div>\n

Yli 200 km\/h puhaltavat tuulet kaatavat s\u00e4hk\u00f6linjoja ja tuhoavat rakennuksia. Valtavat aallot ja rankkasateet aiheuttavat usein vakavia tulvia.<\/p>\n

Hurrikaanit ker\u00e4\u00e4v\u00e4t valtavia m\u00e4\u00e4ri\u00e4 energiaa ja kosteutta kulkiessaan l\u00e4mpim\u00e4n meren yli. Jotkut tutkijat uskovat, ett\u00e4 ilmaston l\u00e4mpeneminen saattaa lis\u00e4t\u00e4 hurrikaanien m\u00e4\u00e4r\u00e4\u00e4 ja tehd\u00e4 niist\u00e4 entist\u00e4 voimakkaampia.<\/p>\n

Viime vuosien tuhoisin hurrikaani oli Katrina, joka iski Yhdysvaltojen etel\u00e4osiin elokuussa 2005. Valtavat aallot ja kaatosateet murtivat New Orleansin tulvavallit, mink\u00e4 seurauksena suurin osa kaupungista j\u00e4i veden alle. Yli 1 800 ihmist\u00e4 menetti henkens\u00e4. Miljoonia ihmisi\u00e4 jouduttiin pelastamaan, ja monet heist\u00e4 eiv\u00e4t ole koskaan palanneet.<\/p>\n

\"MERIS<\/figure>\n

Yksi satelliittien t\u00e4rkeist\u00e4 teht\u00e4vist\u00e4 on varoittaa hurrikaaneista etuk\u00e4teen, jotta ihmiset ehtiv\u00e4t paeta turvaan. Avaruusalukset auttavat my\u00f6s tutkijoita selvitt\u00e4m\u00e4\u00e4n, mit\u00e4 py\u00f6rteilevien myrskyjen sis\u00e4ll\u00e4 tapahtuu.<\/p>\n

ESAn MetOP-A-, ERS-2- ja Envisat-avaruusalukset pystyv\u00e4t seuraamaan niiden arvaamattomia liikkeit\u00e4 ja tutkimaan niit\u00e4 perusteellisesti. Envisatin mittauslaitteet l\u00e4hett\u00e4v\u00e4t tietoja pilvist\u00e4, jotka py\u00f6riv\u00e4t myrskyn keskell\u00e4 olevan silm\u00e4n ymp\u00e4rill\u00e4. Ne mittaavat my\u00f6s tuulen nopeutta silm\u00e4n ymp\u00e4rill\u00e4.
Samalla tutka mittaa tuulia ja aaltoja meren yll\u00e4. Satelliitti mittaa my\u00f6s yl\u00e4pilvien ja merenpinnan l\u00e4mp\u00f6tilaa sek\u00e4 merenpinnan korkeuden muutoksia.
Kaikki n\u00e4m\u00e4 tiedot ovat ratkaisevan t\u00e4rkeit\u00e4 myrskyn k\u00e4ytt\u00e4ytymisen ennustamiseksi.<\/p>","protected":false},"excerpt":{"rendered":"

Hurricanes are the most awesome storms on Earth. Every summer, these huge, rotating storms form over the warm Atlantic Ocean. As they drive westward and hit land, they leave a […]<\/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\/2003\/06\/hurricane3\/17909566-2-eng-GB\/Hurricane.jpeg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/06\/Hurricane3","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-941","post","type-post","status-publish","format-standard","hentry","category-climate-change","category-earth","category-learn","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/941","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=941"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/941\/revisions"}],"predecessor-version":[{"id":4751,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/941\/revisions\/4751"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=941"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=941"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=941"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=941"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=941"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=941"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=941"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}