{"id":4542,"date":"2026-02-26T11:52:35","date_gmt":"2026-02-26T08:52:35","guid":{"rendered":"https:\/\/www.acccflagship.fi\/?p=4542"},"modified":"2026-02-26T11:52:38","modified_gmt":"2026-02-26T08:52:38","slug":"havumetsan-tuoksun-kylvo-ylailmoihin-viilentaisi-ilmastoa","status":"publish","type":"post","link":"https:\/\/www.acccflagship.fi\/index.php\/2026\/02\/26\/havumetsan-tuoksun-kylvo-ylailmoihin-viilentaisi-ilmastoa\/","title":{"rendered":"Havumets\u00e4n tuoksun kylv\u00f6 yl\u00e4ilmoihin viilent\u00e4isi ilmastoa"},"content":{"rendered":"\n

Pilvien ja aerosolihiukkasten m\u00e4\u00e4r\u00e4n kasvattaminen olisi yksi tapa kasvattaa pilvipeittoa. Orgaaniset tiivistymisytimet voivat luoda aerosolihiukkasia yl\u00e4ilmakeh\u00e4\u00e4n ilman rikkiyhdisteiden haittoja, n\u00e4ytt\u00e4v\u00e4t uudet mallinnukset.<\/p>\n\n\n\n

Aerosolipeitteen keinotekoinen kasvattaminen on yksi puhutuimmista tavoista muokata ilmastoa.<\/p>\n\n\n\n

Runsaampi pienhiukkas- ja pilvipeite heijastaa Auringon valoa ilmakeh\u00e4st\u00e4 avaruuteen ja viilent\u00e4\u00e4 ilmastoa. Niinp\u00e4 aerosolihiukkasten m\u00e4\u00e4r\u00e4n lis\u00e4\u00e4ntyminen hillitsee ilmaston l\u00e4mpenemist\u00e4.<\/p>\n\n\n\n

Ilmi\u00f6 n\u00e4kyy luonnossa esimerkiksi tulivuorten purkausten yhteydess\u00e4. Voimakkaat purkaukset sy\u00f6ksev\u00e4t taivaalle yl\u00e4ilmakeh\u00e4\u00e4n rikkidioksidia, jotka hapettuvat ilmakeh\u00e4ss\u00e4 muodostaen rikkihappomolekyylej\u00e4.<\/p>\n\n\n\n

Pienet rikkihappohiukkaset puolestaan sitovat hyvin vett\u00e4. Niinp\u00e4 ne muodostavat hyvin pieni\u00e4 hiukkasia, jotka toimivat my\u00f6s tiivistymisytimin\u00e4, joiden ymp\u00e4rille pilvet muodostuvat.<\/p>\n\n\n\n

Rikkidioksidia voitaisiin kylv\u00e4\u00e4 taivaalle my\u00f6s keinotekoisesti. T\u00e4m\u00e4 lis\u00e4isi aerosolihiukkasten ja pilvien m\u00e4\u00e4r\u00e4\u00e4. Ilmi\u00f6ll\u00e4 olisi kuitenkin k\u00e4\u00e4nt\u00f6puolensa: rikkihappo samalla lis\u00e4\u00e4 otsonikadon riski\u00e4 ja tuottaa niin sanottuja happosateita.<\/p>\n\n\n\n

Rikkidioksidi on kuitenkin mahdollista korvata orgaanisilla yhdisteill\u00e4, kertovat Helsingin yliopiston ilmakeh\u00e4tutkijoiden tuoreet mallinnukset.<\/p>\n\n\n\n

\u2013 <\/strong> Esimerkiksi terpeenit n\u00e4ytt\u00e4isiv\u00e4t synnytt\u00e4v\u00e4n yl\u00e4ilmakeh\u00e4ss\u00e4 aerosolihiukkasia  siin\u00e4 miss\u00e4 rikkihappo, kertoo aerosoli- ja ymp\u00e4rist\u00f6fysiikan professori, akateemikko . <\/p>\n\n\n\n

Tutkimuksen julkaisee tieteen Tellus<\/a>\u00a0kev\u00e4\u00e4n aikana.<\/p>\n\n\n\n

Lue koko uutinen Helsingin yliopiston sivuilta.<\/a><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Pilvien ja aerosolihiukkasten m\u00e4\u00e4r\u00e4n kasvattaminen olisi yksi tapa kasvattaa pilvipeittoa. Orgaaniset tiivistymisytimet voivat luoda aerosolihiukkasia yl\u00e4ilmakeh\u00e4\u00e4n ilman rikkiyhdisteiden haittoja, n\u00e4ytt\u00e4v\u00e4t uudet mallinnukset. Aerosolipeitteen keinotekoinen kasvattaminen on yksi puhutuimmista tavoista muokata ilmastoa. Runsaampi pienhiukkas- ja pilvipeite heijastaa Auringon valoa ilmakeh\u00e4st\u00e4 avaruuteen ja viilent\u00e4\u00e4 ilmastoa. Niinp\u00e4 aerosolihiukkasten m\u00e4\u00e4r\u00e4n lis\u00e4\u00e4ntyminen hillitsee ilmaston l\u00e4mpenemist\u00e4. Ilmi\u00f6 n\u00e4kyy luonnossa esimerkiksi tulivuorten […]<\/p>\n","protected":false},"author":1,"featured_media":2541,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_vp_format_video_url":"","_vp_image_focal_point":{"x":0.5,"y":0.5500000000000000444089209850062616169452667236328125},"footnotes":""},"categories":[140,25],"tags":[55],"class_list":["post-4542","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-impact-en","category-uncategorized-en","tag-accc"],"featured_image_src":"https:\/\/www.acccflagship.fi\/wp-content\/uploads\/ACCC-news-1.png","author_info":{"display_name":"mkulmala","author_link":"https:\/\/www.acccflagship.fi\/index.php\/author\/mkulmala\/"},"_links":{"self":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/4542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/comments?post=4542"}],"version-history":[{"count":1,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/4542\/revisions"}],"predecessor-version":[{"id":4543,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/posts\/4542\/revisions\/4543"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/media\/2541"}],"wp:attachment":[{"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/media?parent=4542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/categories?post=4542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acccflagship.fi\/index.php\/wp-json\/wp\/v2\/tags?post=4542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}