{"id":984,"date":"2005-05-10T10:58:00","date_gmt":"2005-05-10T08:58:00","guid":{"rendered":"https:\/\/kids.esa.int\/satellites_study_deadly_dust_storms\/"},"modified":"2026-10-08T00:34:31","modified_gmt":"2026-10-07T22:34:31","slug":"satellites_study_deadly_dust_storms","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/satellites_study_deadly_dust_storms\/","title":{"rendered":"Satelliitit tutkivat hengenvaarallisia p\u00f6lymyrskyj\u00e4"},"content":{"rendered":"
\n

P\u00f6ly kulkeutuu pitk\u00e4lle. Ei ole lainkaan harvinaista, ett\u00e4 Afrikan Saharan aavikolta per\u00e4isin oleva ohut p\u00f6lykerros laskeutuu tuhansien kilometrien p\u00e4\u00e4ss\u00e4 oleviin pys\u00e4k\u00f6ityihin autoihin.<\/p>\n<\/div>\n

Mutta p\u00f6ly voi olla hengenvaarallista. Saharan kuivilla reuna-alueilla (joita kutsutaan Saheliksi) 300 miljoonaa ihmist\u00e4 on vaarassa sairastua aivokalvontulehdukseen, joka on hengenvaarallinen tauti.<\/p>\n

T\u00e4m\u00e4 sairaus aiheuttaa aivojen ja selk\u00e4ytimen kalvon turpoamista. Ne, jotka eiv\u00e4t mene kuolemaan, voivat k\u00e4rsi\u00e4 kuuroudesta ja aivovaurioista.<\/p>\n

\u201cAivokalvontulehdusepidemioita esiintyy sateettoman jakson j\u00e4lkeen, kun ilmankosteus on alhainen ja ilmassa on paljon p\u00f6ly\u00e4\u201d, selitti Isabelle Jeanne Nigerin Centre de Recherche M\u00e9dicale et Sanitaire -tutkimuskeskuksesta.<\/p>\n

\"Dust
L\u00e4nsi-Saharasta Kanariansaarille puhaltunut p\u00f6ly<\/figcaption><\/figure>\n

Tarkkaa yhteytt\u00e4 ei viel\u00e4 tunneta. Er\u00e4\u00e4n teorian mukaan tuulen kuljettama, talkkijauheen kaltainen hieno p\u00f6ly aiheuttaa \u00e4rsytyst\u00e4 ihmisten nen\u00e4n sis\u00e4ll\u00e4. T\u00e4m\u00e4 helpottaa bakteerien p\u00e4\u00e4sy\u00e4 verenkiertoon.<\/p>\n

ESA auttaa tutkijoita tutkimaan ja ennustamaan aivokalvontulehdusepidemioita. Tavoitteena on saada lis\u00e4\u00e4 tietoa niist\u00e4 tappavista epidemioista, jotka seuraavat usein p\u00f6lyn saapumista.<\/p>\n

L\u00e4\u00e4ketieteen tutkijat k\u00e4ytt\u00e4v\u00e4t satelliittikuvia seuratakseen Sahelin yli pyyhk\u00e4isevi\u00e4 valtavia p\u00f6lymyrskyj\u00e4. Viime kuivakauden aikana ESA toimitti viikoittaisia p\u00f6lykarttoja osana varhaisvaroitusj\u00e4rjestelm\u00e4\u00e4. Sahelin kartat perustuvat ESA:n rakentaman Meteosat-7-s\u00e4\u00e4satelliitin p\u00e4ivitt\u00e4isiin kuviin.<\/p>\n

Seuraavaksi tutkitaan viimeisen 10 vuoden aikana otettuja kuvia ja etsit\u00e4\u00e4n yhteyksi\u00e4 p\u00f6lymyrskyjen ja taudin puhkeamisten v\u00e4lill\u00e4.<\/p>","protected":false},"excerpt":{"rendered":"

Dust is a great traveller. It is not uncommon for a fine coating of dust from Africa\u2019s Sahara desert to settle on parked cars thousands of kilometres away. But dust […]<\/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\/2005\/05\/a_dust_storm_as_seen_by_msg-12\/17898495-2-eng-GB\/A_dust_storm_as_seen_by_MSG-1.gif","esa_banner_description":"A dust storm as seen by MSG-1","esa_banner_credit":"DLR","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/05\/A_dust_storm_as_seen_by_MSG-12","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":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-984","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-protecting-earth"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/984","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=984"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/984\/revisions"}],"predecessor-version":[{"id":4776,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/984\/revisions\/4776"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=984"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=984"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=984"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=984"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=984"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=984"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=984"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=984"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=984"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}