{"id":1125,"date":"2004-12-03T10:05:00","date_gmt":"2004-12-03T09:05:00","guid":{"rendered":"https:\/\/kids.esa.int\/pollution\/"},"modified":"2026-10-08T00:36:17","modified_gmt":"2026-10-07T22:36:17","slug":"pollution","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/pollution\/","title":{"rendered":"Saastuminen"},"content":{"rendered":"
\n

Tukahduttavat savusumupilvet; \u00f6ljyn peitt\u00e4m\u00e4t rannat; kemikaalien punaisiksi v\u00e4rj\u00e4\u00e4m\u00e4t joet. N\u00e4m\u00e4 kaikki ovat ilmeisi\u00e4 esimerkkej\u00e4 saastumisesta.<\/p>\n<\/div>\n

Kaikki saastetyypit eiv\u00e4t kuitenkaan ole helposti havaittavissa. Esimerkiksi n\u00e4kym\u00e4tt\u00f6mi\u00e4 kaasupilvi\u00e4 voi leijua kaupunkien ja taajamien yll\u00e4. Ne voivat aiheuttaa astmaa ja hengityselinten ongelmia. Ne voivat my\u00f6s tappaa puita.<\/p>\n

Toinen ongelma on selvitt\u00e4\u00e4, kuinka laajalle alueelle vaikutukset ulottuvat. Tuulet voivat kuljettaa ep\u00e4puhtauksia tuhansien kilometrien p\u00e4\u00e4h\u00e4n, meren toiselta puolelta toiselle. Suurissa jokissa virtaavat kemikaalit voivat saastuttaa monia maita matkallaan merelle.<\/p>\n

Sitten on viel\u00e4 se ongelma, kuka on syyllinen.<\/p>\n

Satelliitit ovat keskeisi\u00e4 aseita t\u00e4ss\u00e4 loputtomassa taistelussa maapallon puhtauden s\u00e4ilytt\u00e4miseksi. Avaruudessa sijaitsevat mittauslaitteet pystyv\u00e4t havaitsemaan teollisuuden, voimalaitosten ja liikenteen p\u00e4\u00e4st\u00e4m\u00e4t haitalliset kaasut ja kemialliset j\u00e4tteet.<\/p>\n

Satelliitit pystyv\u00e4t paikantamaan saasteiden l\u00e4hteet, seuraamaan niiden liikkumista ilmassa ja havaitsemaan, minne ne p\u00e4\u00e4tyv\u00e4t. Niiden avulla voidaan my\u00f6s tutkia meren v\u00e4ri\u00e4 ja havaita \u00f6ljyvuotoja merell\u00e4 sek\u00e4 p\u00e4iv\u00e4ll\u00e4 ett\u00e4 y\u00f6ll\u00e4.<\/p>\n

Satojen kilometrien korkeudelta maanpinnan yl\u00e4puolelta n\u00e4m\u00e4 \u201ctaivaan vakoojat\u201d auttavat tunnistamaan suurimpia saasteiden viej\u00e4- ja tuojamaita ymp\u00e4ri maailmaa.<\/p>","protected":false},"excerpt":{"rendered":"

Clouds of choking smog; beaches coated in oil; rivers turned red by chemicals. All of these are obvious examples of pollution. However, not all types of pollution are easily seen. […]<\/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\/pollution2\/17882806-2-eng-GB\/pollution.jpg","esa_banner_description":"","esa_banner_credit":"AP Photo\/Peter Dejong","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/pollution2","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":[42,10,43],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1125","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-protecting-earth","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1125","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=1125"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1125\/revisions"}],"predecessor-version":[{"id":2268,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1125\/revisions\/2268"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1125"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1125"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1125"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1125"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1125"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1125"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1125"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}