{"id":47817,"date":"2024-02-25T00:33:43","date_gmt":"2024-02-24T23:33:43","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=47817"},"modified":"2024-02-24T16:36:29","modified_gmt":"2024-02-24T15:36:29","slug":"geologicka-pravda-zijeme-v-dobe-extremne-nizkych-emisi-co2","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2024\/02\/25\/geologicka-pravda-zijeme-v-dobe-extremne-nizkych-emisi-co2\/","title":{"rendered":"Geologick\u00e1 pravda: \u017dijeme v dob\u011b extr\u00e9mn\u011b n\u00edzk\u00fdch emis\u00ed CO2"},"content":{"rendered":"
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Zat\u00edmco klimati\u010dt\u00ed fanatici cht\u011bj\u00ed, abychom v\u011b\u0159ili, \u017ee rostouc\u00ed hladiny CO2 by p\u0159edstavovaly hrozbu pro \u017eivot na Zemi, historie Zem\u011b ukazuje \u00fapln\u011b jin\u00fd obr\u00e1zek.\u00a0Ve skute\u010dnosti \u017eijeme v extr\u00e9mn\u011b n\u00edzkouhl\u00edkov\u00e9 dob\u011b, jak ukazuj\u00ed v\u00fdsledky v\u00fdzkumu.<\/span><\/strong><\/p>\n

V d\u0159\u00edv\u011bj\u0161\u00edch dob\u00e1ch, p\u0159ibli\u017en\u011b v dob\u011b, kdy se objevil prvn\u00ed komplexn\u00ed \u017eivot, byla hladina oxidu uhli\u010dit\u00e9ho v\u00fdrazn\u011b vy\u0161\u0161\u00ed ne\u017e dne\u0161n\u00ed hodnoty.\u00a0Podle studi\u00ed to bylo nap\u0159\u00edklad v obdob\u00ed kambria asi p\u0159ed 500 miliony let kolem 6 000 \u010d\u00e1stic na milion (ppm).\u00a0Od t\u00e9 doby neust\u00e1le klesal a v (studen\u00e9m) permsk\u00e9m obdob\u00ed se zpevnil na p\u0159ibli\u017en\u011b 800 ppm.\u00a0S glob\u00e1ln\u00edm oteplov\u00e1n\u00edm v obdob\u00ed triasu a jury op\u011bt stoupla na hodnotu kolem 2000 ppm a pot\u00e9 klesla na dne\u0161n\u00ed \u00farove\u0148.\u00a0Ilustruje to i n\u00e1sleduj\u00edc\u00ed grafika.<\/span><\/p>\n

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Jak vysv\u011btluje Willis Eschenbach v \u010dl\u00e1nku na klimatick\u00e9m blogu \u201eWatts Up With That\u201c, prim\u00e1ti (tj. na\u0161i p\u0159edci) se objevili asi p\u0159ed 55 miliony let, kdy byla hladina CO2 kolem 1 300 ppm.\u00a0Dnes jsme t\u011bsn\u011b nad 400 ppm.\u00a0Autor tak\u00e9 jasn\u011b ukazuje, \u017ee existuje pouze omezen\u00fd vztah mezi teplotami a \u00farovn\u00ed oxidu uhli\u010dit\u00e9ho v atmosf\u00e9\u0159e.<\/span><\/p>\n

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Tato \u010d\u00edsla v\u0161ak jasn\u011b ukazuj\u00ed, \u017ee stopov\u00fd plyn je ve skute\u010dnosti nesm\u00edrn\u011b d\u016fle\u017eit\u00fd.\u00a0Pokud hladina klesne p\u0159\u00edli\u0161 daleko, v\u011bt\u0161ina rostlin zem\u0159e \u2013 a my jsme (viz prvn\u00ed obr\u00e1zek) v dob\u011b, kdy je hladina CO2 na spodn\u00edm konci stupnice.\u00a0V tomto ohledu bychom se pravd\u011bpodobn\u011b m\u011bli v\u00edce zaj\u00edmat o to, zda dal\u0161\u00ed sni\u017eov\u00e1n\u00ed oxidu uhli\u010dit\u00e9ho skute\u010dn\u011b nezp\u016fsobuje v\u00edce \u0161kody ne\u017e u\u017eitku.\u00a0Koneckonc\u016f, ned\u00e1vn\u00fd n\u00e1r\u016fst za posledn\u00edch n\u011bkolik desetilet\u00ed vedl tak\u00e9 k\u00a0<\/span>v\u00fdrazn\u00e9mu ozelen\u011bn\u00ed na\u0161\u00ed planety<\/span><\/a>\u00a0.<\/span><\/p>\n

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Zat\u00edmco klimati\u010dt\u00ed fanatici cht\u011bj\u00ed, abychom v\u011b\u0159ili, \u017ee rostouc\u00ed hladiny CO2 by p\u0159edstavovaly hrozbu pro \u017eivot…<\/p>\n","protected":false},"author":2,"featured_media":47818,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[2692,873,65],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/47817"}],"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=47817"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/47817\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/47818"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=47817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=47817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=47817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}