{"id":1001,"date":"2004-12-03T10:28:00","date_gmt":"2004-12-03T09:28:00","guid":{"rendered":"https:\/\/kids.esa.int\/aerosols\/"},"modified":"2026-10-08T00:34:43","modified_gmt":"2026-10-07T22:34:43","slug":"aerosols","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/aerosols\/","title":{"rendered":"Aerosolit"},"content":{"rendered":"
\n

Ilma on t\u00e4ynn\u00e4 pieni\u00e4, ilmassa leijuvia p\u00f6lyhiukkasia ja pisaroita \u2013 joita kutsutaan \u201caerosoleiksi\u201d. Monet aerosolit syntyv\u00e4t luonnossa. Niit\u00e4 ovat esimerkiksi aavikkop\u00f6lymyrskyjen hiekka, merest\u00e4 per\u00e4isin olevat suolahiukkaset, j\u00e4\u00e4kiteet sek\u00e4 tulipalojen ja tulivuorenpurkausten tuhka.<\/p>\n<\/div>\n

Ihmisen toiminta lis\u00e4\u00e4 my\u00f6s aerosolien m\u00e4\u00e4r\u00e4\u00e4 ilmakeh\u00e4ss\u00e4. Musta noki ja rikkidioksidiaerosolit nousevat \u201csaastuttavista\u201d voimalaitoksista ja tehtaiden savupiipuista. Muita aerosoleja p\u00e4\u00e4see ilmaan autojen pakokaasuista ja lentokoneiden moottoreista.<\/p>\n

Aerosolit ovat niin pieni\u00e4, ett\u00e4 ne voivat levit\u00e4 ymp\u00e4ri maailmaa. Ne voivat aiheuttaa astmaa ja johtaa happosateisiin, jotka tappavat kaloja ja puita. Ne vaikuttavat my\u00f6s ilmastonmuutokseen, koska ne imev\u00e4t ja hajottavat auringonvaloa. Satelliittien l\u00e4hett\u00e4m\u00e4t tiedot auttavat tutkijoita selvitt\u00e4m\u00e4\u00e4n aerosolien levi\u00e4mist\u00e4 ja niiden vaikutuksia maapalloon.<\/p>\n

ESA:n Envisat-satelliitin nelj\u00e4\u00e4 mittauslaitetta k\u00e4ytet\u00e4\u00e4n p\u00f6lyhiukkasten ja pilvipisaroiden pitoisuuksien kartoittamiseen maanpinnasta 100 kilometrin korkeuteen asti. Niiden avulla voidaan havaita aerosolipilvet ja saasteet, jotka peitt\u00e4v\u00e4t suuria teollisuuskaupunkeja tai palavia metsi\u00e4. Niill\u00e4 voidaan my\u00f6s havaita lentokoneiden yl\u00e4ilmakeh\u00e4\u00e4n j\u00e4tt\u00e4m\u00e4t pakokaasuj\u00e4ljet.<\/p>","protected":false},"excerpt":{"rendered":"

The air is full of tiny, floating dust particles and droplets – known as \u201caerosols\u201d. Many aerosols are produced by nature. These include sand from desert dust storms, salt particles […]<\/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\/07\/volcano_-_grey_with_smoke2\/17894314-2-eng-GB\/Volcano_-_grey_with_smoke.jpe","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\/07\/Volcano_-_grey_with_smoke2","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-1001","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\/1001","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=1001"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1001\/revisions"}],"predecessor-version":[{"id":2144,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1001\/revisions\/2144"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1001"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1001"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1001"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1001"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1001"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1001"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1001"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1001"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1001"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1001"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}