{"id":109525,"date":"2026-06-28T00:21:05","date_gmt":"2026-06-27T22:21:05","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=109525"},"modified":"2026-06-27T14:50:43","modified_gmt":"2026-06-27T12:50:43","slug":"nova-studie-casopisu-nature-dokazuje-mraky-rusi-efekt-co2","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2026\/06\/28\/nova-studie-casopisu-nature-dokazuje-mraky-rusi-efekt-co2\/","title":{"rendered":"Nov\u00e1 studie \u010dasopisu Nature dokazuje: Mraky ru\u0161\u00ed efekt CO2"},"content":{"rendered":"
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Rostouc\u00ed mno\u017estv\u00ed pozorovac\u00edch d\u016fkaz\u016f ukazuje, \u017ee \u00fa\u010dinky CO2 jsou p\u0159\u00edli\u0161 mal\u00e9 na to, aby v\u00fdznamn\u011b ovlivnily klima. Nov\u00e1 studie v renomovan\u00e9m \u010dasopise Nature odhaluje statistick\u00e9 manipulace d\u0159\u00edv\u011bj\u0161\u00edch publikac\u00ed a ukazuje, \u017ee skute\u010dn\u00e9 \u00fa\u010dinky obla\u010dnosti daleko p\u0159eva\u017euj\u00ed nad \u00fadajn\u00fdm sklen\u00edkov\u00fdm efektem CO2, a dokonce ho neutralizuj\u00ed.<\/span><\/strong><\/p>\n

V debat\u011b o klimatu se \u010dasto cituje studie Feldmana a kol. z roku 2015, publikovan\u00e1 v \u010dasopise Nature pod n\u00e1zvem \u201e\u00a0<\/span>Observa\u010dn\u00ed stanoven\u00ed povrchov\u00e9ho radia\u010dn\u00edho p\u016fsoben\u00ed CO2 v letech 2000 a\u017e 2010<\/span><\/a> \u201c, kter\u00e1 demonstruje \u00fadajn\u011b katastrofick\u00fd vliv \u201eklimatick\u00e9ho zabij\u00e1ka\u201c CO2 na sklen\u00edkov\u00fd efekt. Tato studie m\u00e1 v\u0161ak jednu vadu: Aby v\u011bdci izolovali vliv stopov\u00e9ho plynu CO2, brali v \u00favahu v\u00fdhradn\u011b tzv. atmosf\u00e9ru \u201ejasn\u00e9 oblohy\u201c (tj. zcela bezobla\u010dnou oblohu) na dvou m\u011b\u0159ic\u00edch stanic\u00edch \u2013 na Alja\u0161ce a v oblasti Ji\u017en\u00edch Velk\u00fdch pl\u00e1n\u00ed v USA.<\/span><\/p>\n

Jin\u00fdmi slovy, tato \u010dasto citovan\u00e1 studie byla zalo\u017eena na \u010dist\u011b fiktivn\u00ed, modelovan\u00e9 atmosf\u00e9\u0159e, ve kter\u00e9 nejsou \u017e\u00e1dn\u00e9 mraky. A to i p\u0159esto, \u017ee na\u0161e skute\u010dn\u00e1 obloha je z 60 a\u017e 70 procent pokryta mraky. V\u00fdsledkem t\u00e9to modelovan\u00e9 iluze byl vypo\u010d\u00edtan\u00fd n\u00e1r\u016fst sestupn\u00e9ho dlouhovlnn\u00e9ho radia\u010dn\u00edho p\u016fsoben\u00ed (DLRF) z CO2 o nepatrn\u00fdch 0,2 W\/m\u00b2 za desetilet\u00ed (na z\u00e1klad\u011b n\u00e1r\u016fstu CO2 o 22 ppm mezi lety 2000 a 2010).<\/span><\/p>\n

V roce 2025, t\u00e9m\u011b\u0159 bez pov\u0161imnut\u00ed mainstreamov\u00fdch m\u00e9di\u00ed, byla v \u010dasopise Nature publikov\u00e1na velmi zaj\u00edmav\u00e1 studie Lei Liu a koleg\u016f s n\u00e1zvem \u201e\u00a0<\/span>Mraky sni\u017euj\u00ed sestupn\u00e9 dlouhovlnn\u00e9 z\u00e1\u0159en\u00ed nad pevninou v otepluj\u00edc\u00edm se klimatu<\/span><\/a> \u201c. Tito v\u011bdci tak\u00e9 zkoumali trendy DLRF od roku 1996 do roku 2018 v oblasti Ji\u017en\u00edch Velk\u00fdch pl\u00e1n\u00ed, ale roz\u0161\u00ed\u0159ili sv\u00e1 pozorov\u00e1n\u00ed o celosv\u011btov\u00e1 data z oblasti mezi 60\u00b0 ji\u017en\u00ed a 60\u00b0 severn\u00ed \u0161\u00ed\u0159ky. Z\u00e1sadn\u00ed rozd\u00edl oproti studii z roku 2015: M\u00edsto spol\u00e9h\u00e1n\u00ed se na bezobla\u010dnou, imagin\u00e1rn\u00ed atmosf\u00e9ru pou\u017eil Liu a jeho t\u00fdm tzv. hodnoty \u201ecel\u00e9 oblohy\u201c \u2013 m\u011b\u0159ili re\u00e1ln\u00fd sv\u011bt, v n\u011bm\u017e mraky v\u00fdznamn\u011b (a dominantn\u011b) p\u0159isp\u00edvaj\u00ed. V\u00fdsledky jsou zni\u010duj\u00edc\u00ed pro zaveden\u00fd narativ o CO2. Pozorovac\u00ed data jasn\u011b ukazuj\u00ed, \u017ee mraky funguj\u00ed jako mechanismus negativn\u00ed zp\u011btn\u00e9 vazby. Masivn\u011b sni\u017euj\u00ed sklen\u00edkov\u00fd efekt o -0,77 a\u017e -1,77 W\/m\u00b2 za desetilet\u00ed.<\/span><\/p>\n

Porovn\u00e1n\u00ed t\u011bchto skute\u010dn\u00fdch m\u011b\u0159en\u00ed odhaluje chybu alarmist\u016f: Zat\u00edmco CO2 zvy\u0161uje radiaci o pouh\u00fdch 0,2 W\/m\u00b2 za desetilet\u00ed, oblaka sou\u010dasn\u011b syst\u00e9m mnohon\u00e1sobn\u011b v\u00edce ochlazuj\u00ed (a\u017e o -1,77 W\/m\u00b2). P\u0159irozen\u00e9 jevy v oblasti oblak\u016f tak nejen snadno zast\u00edn\u00ed vliv stopov\u00e9ho plynu CO2, ale v kone\u010dn\u00e9m d\u016fsledku jej zcela neguj\u00ed.<\/span><\/p>\n

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Zdroj obr\u00e1zku:\u00a0<\/span>Liu a kol. 2025<\/span><\/a><\/em><\/figcaption><\/figure>\n

Graf ze studie tento vztah p\u016fsobiv\u011b ilustruje: Izolovan\u00fd efekt CO2 v re\u00e1ln\u00e9m sc\u00e9n\u00e1\u0159i s celou oblohou (mal\u00fd hn\u011bdo\u010derven\u00fd pruh pobl\u00ed\u017e nulov\u00e9 linie) je tak mal\u00fd, \u017ee se st\u00e1v\u00e1 zcela irelevantn\u00edm ve srovn\u00e1n\u00ed s chladic\u00edm \u00fa\u010dinkem mrak\u016f (obrovsk\u00fd \u0161ed\u00fd pruh, kter\u00fd sah\u00e1 daleko do z\u00e1porn\u00e9ho rozsahu).<\/span><\/p>\n

To nab\u00edz\u00ed hlubok\u00fd vhled do metod zpolitizovan\u00e9 klimatologii. Pro\u010d si v\u011bdci jako Feldman pro svou hojn\u011b citovanou studii z roku 2015 zvolili fiktivn\u00ed, bezobla\u010dnou atmosf\u00e9ru, m\u00edsto aby zv\u00e1\u017eili skute\u010dn\u00fd, obla\u010dnost\u00ed pokryt\u00fd sv\u011bt? I kdy\u017e sou\u010dasn\u00e1 studie \u010dasopisu Nature neposkytuje p\u0159\u00edmou odpov\u011b\u010f, nab\u00edz\u00ed d\u016fkazy o tom, \u017ee p\u0159\u00edroda disponuje gigantick\u00fdmi, samoregula\u010dn\u00edmi mechanismy. Mechanismy, kter\u00e9 jednodu\u0161e neguj\u00ed okrajov\u00fd vliv d\u00e9monizovan\u00e9ho plynu CO2. V ka\u017ed\u00e9m p\u0159\u00edpad\u011b z toho nelze vyvodit \u201eklimatickou nouzovou situaci\u201c.<\/span><\/p>\n

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Rostouc\u00ed mno\u017estv\u00ed pozorovac\u00edch d\u016fkaz\u016f ukazuje, \u017ee \u00fa\u010dinky CO2 jsou p\u0159\u00edli\u0161 mal\u00e9 na to, aby v\u00fdznamn\u011b…<\/p>\n","protected":false},"author":2,"featured_media":109526,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[2692,6356,839],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/109525"}],"collection":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/comments?post=109525"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/109525\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/109526"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=109525"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=109525"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=109525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}