{"id":4162,"date":"2022-08-01T05:14:05","date_gmt":"2022-08-01T05:14:05","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=4162"},"modified":"2022-08-01T05:14:05","modified_gmt":"2022-08-01T05:14:05","slug":"climate-change-milestone-co2-levels-nearing-400-ppm","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/climate-science\/climate-change-milestone-co2-levels-nearing-400-ppm\/","title":{"rendered":"Miln\u00edk ve zm\u011bn\u011b klimatu: Hladiny CO2 stoupaj\u00ed k 400 ppm"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Miln\u00edk v klimatick\u00fdch zm\u011bn\u00e1ch: \u00darovn\u011b CO2 se bl\u00ed\u017e\u00ed 400 ppm<\/h2>\n\n<h2 class=\"wp-block-heading\">Rostouc\u00ed hladiny oxidu uhli\u010dit\u00e9ho<\/h2>\n\n<p>Koncentrace oxidu uhli\u010dit\u00e9ho (CO2) v atmosf\u00e9\u0159e m\u00e1 poprv\u00e9 v lidsk\u00e9 historii p\u0159ekro\u010dit 400 \u010d\u00e1stic na milion (ppm) v pr\u016fb\u011bhu tohoto m\u011bs\u00edce. Tento miln\u00edk je jasnou p\u0159ipom\u00ednkou neust\u00e1l\u00e9ho n\u00e1r\u016fstu hladin CO2 a nal\u00e9hav\u00e9 pot\u0159eby \u0159e\u0161it zm\u011bnu klimatu.<\/p>\n\n<p>V\u011bdci sleduj\u00ed koncentrace CO2 ze stanice na Havaji, kde hladiny obvykle dosahuj\u00ed vrcholu v kv\u011btnu. V sou\u010dasn\u00e9 dob\u011b se hladiny pohybuj\u00ed kolem 399 ppm a v\u011bdci p\u0159edpov\u00eddaj\u00ed, \u017ee p\u0159ekro\u010d\u00ed 400 ppm tento m\u011bs\u00edc nebo nejpozd\u011bji p\u0159\u00ed\u0161t\u00ed rok.<\/p>\n\n<h2 class=\"wp-block-heading\">Historick\u00fd kontext<\/h2>\n\n<p>V b\u0159eznu 1958, kdy byla provedena prvn\u00ed m\u011b\u0159en\u00ed atmosf\u00e9rick\u00e9ho CO2, severn\u00ed polokoule dos\u00e1hla hodnoty 316 ppm. V\u011bdci odhaduj\u00ed, \u017ee p\u0159edindustri\u00e1ln\u00ed hladiny byly kolem 280 ppm. B\u011bhem 800 000 let p\u0159ed pr\u016fmyslovou revoluc\u00ed hladiny CO2 nikdy nep\u0159ekro\u010dily 300 ppm.<\/p>\n\n<p>Od po\u010d\u00e1tku industrializace v\u0161ak hladiny CO2 neust\u00e1le rostou. Sou\u010dasn\u00fdm tempem pravd\u011bpodobn\u011b dos\u00e1hneme 450 ppm b\u011bhem n\u011bkolika p\u0159\u00ed\u0161t\u00edch desetilet\u00ed.<\/p>\n\n<h2 class=\"wp-block-heading\">V\u00fdznam miln\u00edku 400 ppm<\/h2>\n\n<p>A\u010dkoli je miln\u00edk 400 ppm pon\u011bkud sv\u00e9voln\u00fd, v\u011bdci zd\u016fraz\u0148uj\u00ed jeho v\u00fdznam jako varov\u00e1n\u00ed p\u0159ed neust\u00e1l\u00fdm n\u00e1r\u016fstem hladin CO2. Bez ohledu na to, zda jsme na 390 nebo 400 ppm, faktem z\u016fst\u00e1v\u00e1, \u017ee atmosf\u00e9rick\u00fd CO2 stoup\u00e1 a o\u010dek\u00e1v\u00e1 se, \u017ee bude pokra\u010dovat ve vzestupu.<\/p>\n\n<h2 class=\"wp-block-heading\">Politick\u00e1 a ve\u0159ejn\u00e1 odezva<\/h2>\n\n<p>N\u011bkte\u0159\u00ed v\u011bdci a obh\u00e1jci doufaj\u00ed, \u017ee p\u0159ekro\u010den\u00ed hranice 400 ppm p\u0159im\u011bje politiky a ve\u0159ejnost k akci. Zm\u011bna klimatu nen\u00ed jen v\u011bdeckou ot\u00e1zkou, ale tak\u00e9 politickou.<\/p>\n\n<p>\u201eDoufejme, \u017ee dosa\u017een\u00ed 400 ppm m\u016f\u017ee poslou\u017eit jako jiskra k za\u017eehnut\u00ed nov\u00e9ho pocitu nal\u00e9havosti ohledn\u011b zm\u011bny klimatu,\u201c p\u00ed\u0161e Responding to Climate Change. \u201eJinak za n\u011bkolik desetilet\u00ed budeme litovat sv\u00e9 ne\u010dinnosti, a\u017e dos\u00e1hneme 450 ppm.\u201c<\/p>\n\n<p>Nen\u00ed v\u0161ak zaru\u010deno, \u017ee tento miln\u00edk bude m\u00edt v\u00fdznamn\u00fd dopad na politiku, postoje nebo \u010diny.<\/p>\n\n<h2 class=\"wp-block-heading\">V\u00fdzvy a obavy<\/h2>\n\n<p>Jednou z hlavn\u00edch v\u00fdzev je, \u017ee havajsk\u00e1 stanice, kter\u00e1 sleduje hladiny CO2, je ohro\u017eena uzav\u0159en\u00edm kv\u016fli \u0161krt\u016fm v rozpo\u010dtu. V\u011bdci se ob\u00e1vaj\u00ed, \u017ee by to mohlo br\u00e1nit na\u0161im schopnostem sledovat hladiny CO2 a monitorovat pr\u016fb\u011bh zm\u011bny klimatu.<\/p>\n\n<p>\u201eJe to trochu hloup\u00e9, \u017ee jsme se rozhodli chovat jako p\u0161trosi,\u201c \u0159ekl biogeochemik Jim White \u010dasopisu Nature. \u201eNechceme v\u011bd\u011bt, kolik CO2 je v atmosf\u00e9\u0159e, p\u0159esto\u017ee bychom m\u011bli sledovat je\u0161t\u011b v\u00edce.\u201c<\/p>\n\n<h2 class=\"wp-block-heading\">Dlouhodob\u00e9 dopady<\/h2>\n\n<p>N\u00e1r\u016fst atmosf\u00e9rick\u00fdch hladin CO2 m\u00e1 \u0159adu dlouhodob\u00fdch dopad\u016f na na\u0161i planetu a jej\u00ed obyvatele:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Glob\u00e1ln\u00ed oteplov\u00e1n\u00ed:<\/strong> CO2 p\u016fsob\u00ed jako sklen\u00edkov\u00fd plyn, zachycuje teplo v atmosf\u00e9\u0159e a vede ke glob\u00e1ln\u00edmu oteplov\u00e1n\u00ed.<\/li>\n<li><strong>Okyselov\u00e1n\u00ed oce\u00e1n\u016f:<\/strong> CO2 se rozpou\u0161t\u00ed v mo\u0159sk\u00e9 vod\u011b a vytv\u00e1\u0159\u00ed kyselinu uhli\u010ditou, kter\u00e1 m\u016f\u017ee po\u0161kodit mo\u0159sk\u00fd \u017eivot.<\/li>\n<li><strong>Extr\u00e9mn\u00ed pov\u011btrnostn\u00ed jevy:<\/strong> Rostouc\u00ed hladiny CO2 jsou spojeny se zv\u00fd\u0161en\u00edm \u010detnosti a intenzity extr\u00e9mn\u00edch pov\u011btrnostn\u00edch jev\u016f, jako jsou hurik\u00e1ny, vlny veder a sucha.<\/li>\n<li><strong>Dopady na zdrav\u00ed:<\/strong> Vysok\u00e9 hladiny CO2 mohou p\u0159isp\u00edvat k d\u00fdchac\u00edm a kardiovaskul\u00e1rn\u00edm probl\u00e9m\u016fm.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">V\u00fdzva k akci<\/h2>\n\n<p>Miln\u00edk 400 ppm je p\u0159ipom\u00ednkou, \u017ee si nem\u016f\u017eeme dovolit b\u00fdt v ot\u00e1zce zm\u011bny klimatu spokojeni. Je z\u00e1sadn\u00ed, abychom nyn\u00ed podnikli kroky ke sn\u00ed\u017een\u00ed emis\u00ed a zm\u00edrn\u011bn\u00ed jejich dopad\u016f.<\/p>\n\n<p>To zahrnuje:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>P\u0159echod na obnoviteln\u00e9 zdroje energie<\/li>\n<li>Zlep\u0161en\u00ed energetick\u00e9 \u00fa\u010dinnosti<\/li>\n<li>Ochranu les\u016f a dal\u0161\u00edch uhl\u00edkov\u00fdch propad\u016f<\/li>\n<li>Investice do v\u00fdzkumu a v\u00fdvoje klimatick\u00fdch \u0159e\u0161en\u00ed<\/li>\n<li>Prosazov\u00e1n\u00ed klimatick\u00e9 politiky na v\u0161ech \u00farovn\u00edch vl\u00e1dy<\/li>\n<\/ul>\n\n<p>Spoluprac\u00ed m\u016f\u017eeme \u0159e\u0161it zm\u011bnu klimatu a vytvo\u0159it udr\u017eitelnou budoucnost pro na\u0161i planetu.<\/p>","protected":false},"excerpt":{"rendered":"<p>Miln\u00edk v klimatick\u00fdch zm\u011bn\u00e1ch: \u00darovn\u011b CO2 se bl\u00ed\u017e\u00ed 400 ppm Rostouc\u00ed hladiny oxidu uhli\u010dit\u00e9ho Koncentrace oxidu uhli\u010dit\u00e9ho (CO2) v atmosf\u00e9\u0159e m\u00e1 poprv\u00e9 v lidsk\u00e9 historii p\u0159ekro\u010dit 400 \u010d\u00e1stic na milion&hellip;<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[284],"tags":[7650,36,569,7651,34],"class_list":["post-4162","post","type-post","status-publish","format-standard","hentry","category-climate-science","tag-co2-levels","tag-environmental-science","tag-global-warming","tag-climate-crisis","tag-climate-change"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/4162","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=4162"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/4162\/revisions"}],"predecessor-version":[{"id":4163,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/4162\/revisions\/4163"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=4162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=4162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=4162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}