{"id":420,"date":"2017-11-07T09:24:00","date_gmt":"2017-11-07T08:24:00","guid":{"rendered":"https:\/\/kids.esa.int\/melting_snow_helps_trees_to_absorb_carbon_dioxide\/"},"modified":"2026-10-08T00:27:59","modified_gmt":"2026-10-07T22:27:59","slug":"melting_snow_helps_trees_to_absorb_carbon_dioxide","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/melting_snow_helps_trees_to_absorb_carbon_dioxide\/","title":{"rendered":"Sulava lumi auttaa puita sitomaan hiilidioksidia"},"content":{"rendered":"<div class=\"lede\">\n<p>Voiko jotain pahaa johtaa johonkin hyv\u00e4\u00e4n? Ehk\u00e4 se on mahdollista, ilmaston l\u00e4mpenemist\u00e4 koskevan uuden tutkimuksen mukaan.<\/p>\n<\/div>\n<p>Tutkijat tiet\u00e4v\u00e4t, ett\u00e4 ilmakeh\u00e4ss\u00e4 oleva suuri m\u00e4\u00e4r\u00e4 hiilidioksidia on yksi ilmaston l\u00e4mpenemisen keskeisist\u00e4 syist\u00e4. Jotta voitaisiin ennustaa, kuinka paljon hiilidioksidia p\u00e4\u00e4tyy ilmakeh\u00e4\u00e4n, on t\u00e4rke\u00e4\u00e4 pohtia, mist\u00e4 sit\u00e4 vapautuu ja mihin sit\u00e4 sitoutuu.<\/p>\n<p>Me ihmiset poltamme kivihiilt\u00e4, k\u00e4yt\u00e4mme kaasua ja \u00f6ljy\u00e4, omistamme paljon autoja ja kulutamme runsaasti energiaa kotiemme l\u00e4mmitt\u00e4miseen. Kaikki t\u00e4m\u00e4 aiheuttaa hiilidioksidip\u00e4\u00e4st\u00f6j\u00e4 maapallon ilmakeh\u00e4\u00e4n. Maapallon l\u00e4mp\u00f6tilojen noustessa havaitsemme muutoksia maapallon ilmastossa. N\u00e4it\u00e4 ovat muun muassa j\u00e4\u00e4tik\u00f6iden sulaminen, merenpinnan nousu ja \u00e4\u00e4rimm\u00e4iset s\u00e4\u00e4ilmi\u00f6t \u2013 kaikki huonoja uutisia.<\/p>\n<p>Yksi l\u00e4mpim\u00e4mpien l\u00e4mp\u00f6tilojen v\u00e4hemm\u00e4n tunnetuista vaikutuksista on se, ett\u00e4 Kanadan, Ven\u00e4j\u00e4n, Skandinavian ja Yhdysvaltojen valtavia metsi\u00e4 peitt\u00e4v\u00e4 lumi sulaa aiemmin vuoden aikana. T\u00e4m\u00e4 paljastaa suuren m\u00e4\u00e4r\u00e4n puita, jotka sitovat hiilidioksidia ilmasta. T\u00e4m\u00e4 on eritt\u00e4in hy\u00f6dyllist\u00e4, sill\u00e4 se auttaa hillitsem\u00e4\u00e4n ilmaston l\u00e4mpenemist\u00e4!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1197\" data-credit=\"GlobSnow \/ Finnish Meteorological Institute\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/11\/This_graph_shows_when_the_forests_are_no_longer_covered_by_snow\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/11\/this_graph_shows_when_the_forests_are_no_longer_covered_by_snow\/17908790-2-eng-GB\/This_graph_shows_when_the_forests_are_no_longer_covered_by_snow.jpg\" alt=\"This graph shows when the forests are no longer covered by snow.\"><figcaption>T\u00e4m\u00e4 kaavio osoittaa, milloin mets\u00e4alueet eiv\u00e4t en\u00e4\u00e4 ole lumen peitossa.<\/figcaption><\/figure>\n<p>Hiilidioksidipitoisuuksien mittaamisen tueksi ESA:n GlobSnow-hanke seurasi satelliittien avulla, kuinka paljon lunta peitti pohjoisen pallonpuoliskon eri alueita vuosina 1979\u20132015. Tutkijaryhm\u00e4 analysoi \u00e4skett\u00e4in kaikki n\u00e4m\u00e4 tiedot ja havaitsi, ett\u00e4 puut ja kasvit ovat alkaneet kasvaa kev\u00e4isin yh\u00e4 aikaisemmin. T\u00e4m\u00e4n ansiosta ne pystyv\u00e4t sitomaan huomattavasti enemm\u00e4n hiilidioksidia. T\u00e4ss\u00e4 tapauksessa siis jotain hyv\u00e4\u00e4 on syntynyt jotain huonosta!<\/p>\n<p>N\u00e4it\u00e4 uusia tuloksia hy\u00f6dynnet\u00e4\u00e4n nyt, jotta voimme tehd\u00e4 entist\u00e4 tarkempia ennusteita ilmaston l\u00e4mpenemisest\u00e4.<\/p>\n<p><b>Mielenkiintoinen fakta:<\/b> Ensi vuonna ESA k\u00e4ynnist\u00e4\u00e4 Snow_cci-hankkeensa, jonka tavoitteena on ker\u00e4t\u00e4 entist\u00e4 tarkempia tietoja lumikorkeuksista ymp\u00e4ri maailmaa.<\/p>","protected":false},"excerpt":{"rendered":"<p>Can something bad lead to something good? Maybe it can, according to new research about global warming. Scientists know that lots of carbon dioxide in our atmosphere is a key [&hellip;]<\/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\/2017\/11\/when_the_snow_melts_the_trees_can_absorb_carbon_dioxide\/17871522-2-eng-GB\/When_the_snow_melts_the_trees_can_absorb_carbon_dioxide.jpg","esa_banner_description":"When the snow melts, the trees can absorb carbon dioxide","esa_banner_credit":"A. 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