{"id":67822,"date":"2024-12-10T00:37:04","date_gmt":"2024-12-09T23:37:04","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=67822"},"modified":"2024-12-09T17:07:44","modified_gmt":"2024-12-09T16:07:44","slug":"dramaticky-pokles-letnich-teplot-v-antarktide-o-1c","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2024\/12\/10\/dramaticky-pokles-letnich-teplot-v-antarktide-o-1c\/","title":{"rendered":"Dramatick\u00fd pokles letn\u00edch teplot v Antarktid\u011b o 1\u00b0C"},"content":{"rendered":"
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Skupina korejsk\u00fdch pol\u00e1rn\u00edch v\u00fdzkumn\u00edk\u016f u\u010dinila \u00fa\u017easn\u00fd objev, \u017ee letn\u00ed teploty v Antarktid\u011b klesly o 1 \u00b0C za pouh\u00fdch 20 let mezi lety 1979 a 1999 a od t\u00e9 doby jsou pozastaveny. Mo\u017en\u00e1 je \u201eobjev\u201c p\u0159\u00edli\u0161 siln\u00e9 slovo. Pr\u00e1ce, ned\u00e1vno\u00a0publikovan\u00e1 v\u00a0<\/a><\/span>\u010dasopise\u00a0<\/span>Nature<\/span><\/em><\/a>\u00a0, potvrzuje, \u017ee oteplov\u00e1n\u00ed v \u00e9\u0159e glob\u00e1ln\u00edho masov\u00e9ho oteplov\u00e1n\u00ed Antarktidu do zna\u010dn\u00e9 m\u00edry obe\u0161lo. Jin\u00ed v\u011bdci zjistili, \u017ee Antarktida se za posledn\u00edch 70 let p\u0159esn\u00fdch z\u00e1znam\u016f oteplila jen velmi m\u00e1lo. V\u0161echna tato zji\u0161t\u011bn\u00ed jsou ignorov\u00e1na v mainstreamov\u00fdch m\u00e9di\u00edch, kde zjednodu\u0161en\u00fd pohled, \u017ee lid\u00e9 ovl\u00e1daj\u00ed klima pomoc\u00ed uhlovod\u00edk\u016f, je hlavn\u00ed hnac\u00ed silou paniky kolem realizace \u010f\u00e1belsk\u00e9ho projektu Net Zero. Teplotn\u00ed poklesy a nep\u0159\u00edjemn\u00e9 pauzy v Antarktid\u011b za 45 let neodpov\u00eddaj\u00ed dob\u011b, kdy hladina oxidu uhli\u010dit\u00e9ho v atmosf\u00e9\u0159e vzrostla z t\u00e9m\u011b\u0159 nev\u00fdznamn\u00fdch 337 ppm na 420.<\/span><\/p>\n

Korej\u0161t\u00ed v\u011bdci podporuj\u00ed sv\u016fj objev chlazen\u00ed dv\u011bma soubory dat. Z\u00e1znamy pozemn\u00edch stanic ukazuj\u00ed ochlazen\u00ed o 0,53 \u00b0C za dek\u00e1du mezi lety 1979-99 a -0,004 \u00b0C za dek\u00e1du od p\u0159elomu stolet\u00ed. Data \u201ereanal\u00fdzy\u201c jsou vytvo\u0159ena pomoc\u00ed po\u010d\u00edta\u010dov\u00fdch model\u016f a \u010dasto vykazuj\u00ed v\u011bt\u0161\u00ed oteplov\u00e1n\u00ed. V tomto p\u0159\u00edpad\u011b je trend ochlazov\u00e1n\u00ed men\u0161\u00ed, ale oba soubory dat ukazuj\u00ed jasn\u00fd trend ochlazov\u00e1n\u00ed od roku 1979.<\/span><\/p>\n

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V grafu v\u00fd\u0161e odpov\u00eddaj\u00ed p\u0159eru\u0161ovan\u00e9 te\u010dkovan\u00e9 a \u010dern\u00e9 pln\u00e9 \u010d\u00e1ry v\u00fdsledk\u016fm pozorov\u00e1n\u00ed z 20 stanic, respektive dat\u016fm \u201ereanal\u00fdzy\u201c. Dva obr\u00e1zky pod diagramem jasn\u011b ukazuj\u00ed ochlazen\u00ed, kter\u00e9 bylo zji\u0161t\u011bno na cel\u00e9m kontinentu. Oran\u017eov\u00e1 \u010d\u00e1ra odkazuje na data n\u00e1stupu stratosf\u00e9rick\u00e9ho oteplov\u00e1n\u00ed (SFWOD), co\u017e je jeden z n\u011bkolika kl\u00ed\u010dov\u00fdch p\u0159irozen\u00fdch klimatick\u00fdch faktor\u016f, kter\u00e9 v\u011bdci zkoumali ve snaze vysv\u011btlit zm\u011bny teploty. Grafy teplotn\u00edch zm\u011bn dob\u0159e souhlas\u00ed s podobn\u00fdm \u010dl\u00e1nkem Singha a Polvaniho. Tento dokument z roku 2021 zjistil, \u017ee oteplov\u00e1n\u00ed\u00a0za posledn\u00edch sedm desetilet\u00ed \u201e\u00a0<\/span>t\u00e9m\u011b\u0159 neexistuje \u201c.<\/span><\/a><\/p>\n

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Singh a Polvani tak\u00e9 zjistili, \u017ee antarktick\u00fd mo\u0159sk\u00fd led ve stejn\u00e9m obdob\u00ed \u201em\u00edrn\u011b vzrostl\u201c, a tyto v\u00fdsledky byly potvrzeny v jin\u00fdch v\u011bdeck\u00fdch prac\u00edch. Minul\u00fd m\u011bs\u00edc\u00a0<\/span>Daily Skeptic<\/span><\/em>\u00a0informoval o pr\u00e1ci \u010dty\u0159 ekologick\u00fdch v\u011bdc\u016f, kte\u0159\u00ed zjistili, \u017ee mo\u0159sk\u00fd led kolem Antarktidy\u00a0<\/span>\u201epomalu p\u0159ib\u00fdv\u00e1<\/span><\/a>\u00a0\u201c od doby, kdy v roce 1979 za\u010daly nep\u0159etr\u017eit\u00e9 satelitn\u00ed z\u00e1znamy\u00a0. To samoz\u0159ejm\u011b neznamen\u00e1, \u017ee nedoch\u00e1z\u00ed ke kr\u00e1tkodob\u00fdm cyklick\u00fdm v\u00fdkyv\u016fm v rozsahu ledu, a ty jsou hlavn\u00edm c\u00edlem alarmist\u016f. Ned\u00e1vn\u00e9 \u201ep\u0159ekvapiv\u00e9\u201c kol\u00eds\u00e1n\u00ed p\u0159im\u011blo v\u011bdeck\u00e9ho redaktora\u00a0<\/span>Financial Times<\/span><\/em>\u00a0Clivea Cooksona k\u00a0<\/span>prohl\u00e1\u0161en\u00ed<\/span><\/a>\u00a0, \u017ee cel\u00e1 oblast \u201e\u010del\u00ed katastrofick\u00e9 kask\u00e1d\u011b extr\u00e9mn\u00edch ekologick\u00fdch ud\u00e1lost\u00ed… kter\u00e9 ovlivn\u00ed klima na cel\u00e9m sv\u011bt\u011b\u201c.<\/span><\/p>\n

V popla\u0161n\u00fdch kruz\u00edch nen\u00ed v\u0161e ztraceno, proto\u017ee st\u00e1le maj\u00ed oblast v z\u00e1padn\u00ed Antarktid\u011b, na kterou mohou uk\u00e1zat, aby podn\u00edtili sv\u00e9 zpolitizovan\u00e9 klimatick\u00e9 obavy. Oblast je dob\u0159e vid\u011bt na map\u00e1ch v\u00fd\u0161e, kter\u00e9 ukazuj\u00ed ned\u00e1vn\u00e9 vy\u0161\u0161\u00ed teploty. Ale pro\u010d by m\u011bl dob\u0159e prom\u00edchan\u00fd atmosf\u00e9rick\u00fd stopov\u00fd plyn s oteplovac\u00edmi vlastnostmi ovlivnit pouze \u010d\u00e1st obrovsk\u00e9ho ledem pokryt\u00e9ho kontinentu, nen\u00ed zcela jasn\u00e9 \u2013 nevad\u00ed, je to nejlep\u0161\u00ed dostupn\u00fd d\u016fkaz pro \u201eglob\u00e1ln\u00ed oteplov\u00e1n\u00ed\u201c. Ti, kte\u0159\u00ed hledaj\u00ed zjevn\u011bj\u0161\u00ed p\u0159irozen\u00e9 p\u0159\u00ed\u010diny zm\u011bny klimatu, poukazuj\u00ed na p\u0159\u00edtomnost sopek. Podle ned\u00e1vn\u00fdch objev\u016f je nyn\u00ed v syst\u00e9mu West Antarctic Rift 138 identifikovan\u00fdch sopek s nadmo\u0159skou v\u00fd\u0161kou od 300 do p\u0159ibli\u017en\u011b 4 km. V roce 2021 Dziadek\u00a0<\/span>et al<\/span><\/em>\u00a0zjistili, \u017ee \u201e\u00a0<\/span>p\u00e1smo zv\u00fd\u0161en\u00e9ho geoterm\u00e1ln\u00edho tepeln\u00e9ho toku<\/span><\/a>\u00a0\u201c m\u00e1 \u201ehlubok\u00fd vliv na dynamiku tekutin z\u00e1padoantarktick\u00e9ho ledov\u00e9ho \u0161t\u00edtu\u201c. Tato oblast je domovem ledovce Thwaites, zn\u00e1m\u00e9ho jako \u201eledovec soudn\u00e9ho dne\u201c a ob\u00e1val se, \u017ee bude vystaven riziku zhroucen\u00ed a zv\u00fd\u0161en\u00ed hladiny mo\u0159e. V\u011bdci v\u0161ak prok\u00e1zali, \u017ee v t\u00e9to oblasti existuj\u00ed v\u00fdznamn\u00e9 cykly v\u00fdroby ledu, kter\u00e9 se datuj\u00ed tis\u00edce let do minulosti.<\/span><\/p>\n

Na dal\u0161\u00ed klimatick\u00e9 vlivy na Antarktid\u011b\u00a0<\/span>ned\u00e1vno upozornila skupina novoz\u00e9landsk\u00fdch v\u011bdc\u016f, kte\u0159\u00ed zjistili, \u017ee oz\u00f3nov\u00e1 d\u00edra vysoko nad kontinentem je v\u011bt\u0161\u00ed ne\u017e kdy d\u0159\u00edve, a to i p\u0159es 35let\u00fd z\u00e1kaz pou\u017e\u00edv\u00e1n\u00ed chlorfluoruhlovod\u00edk\u016f (CFU). Gener\u00e1ln\u00ed tajemn\u00edk OSN Antonio Guterres \u0159ekl, \u017ee sv\u011bt by m\u011bl b\u00fdt povzbuzen inspirativn\u00edm\u00a0<\/span><\/a>p\u0159\u00edkladem politick\u00e9 v\u016fle<\/span><\/a>\u00a0a pou\u017e\u00edt stejnou v\u016fli k uzdraven\u00ed planety. Stra\u0161en\u00ed ozonov\u00e9 vrstvy CFU bylo pova\u017eov\u00e1no za velk\u00fd triumf v kruz\u00edch zelen\u00fdch stra\u0161\u00e1k\u016f \u2013 st\u00e1le tomu tak je, jen \u0161koda fakt\u016f. Otev\u0159en\u00ed ozonov\u00e9 vrstvy na ja\u0159e se zd\u00e1 b\u00fdt do zna\u010dn\u00e9 m\u00edry p\u0159irozen\u00fdm jevem. \u0158\u00edk\u00e1 se, \u017ee na tuto ud\u00e1lost maj\u00ed z\u00e1sadn\u00ed vliv teploty v t\u00e9to dob\u011b spolu s v\u011btrem. Novoz\u00e9land\u0161t\u00ed i korej\u0161t\u00ed v\u011bdci poznamen\u00e1vaj\u00ed, \u017ee dynamick\u00e9 zm\u011bny v horn\u00edch vrstv\u00e1ch atmosf\u00e9ry s pol\u00e1rn\u00edm v\u00edrem ovliv\u0148uj\u00ed klimatick\u00e9 podm\u00ednky.<\/span><\/p>\n

Chris Morrison je<\/span><\/em>\u00a0environment\u00e1ln\u00ed redaktor Daily Skeptic<\/span>.<\/span><\/p>\n<\/div>\n<\/div>\n

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Zdroj<\/a><\/span><\/h3>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Skupina korejsk\u00fdch pol\u00e1rn\u00edch v\u00fdzkumn\u00edk\u016f u\u010dinila \u00fa\u017easn\u00fd objev, \u017ee letn\u00ed teploty v Antarktid\u011b klesly o 1…<\/p>\n","protected":false},"author":2,"featured_media":66364,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[1648,873,2648,1820],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/67822"}],"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=67822"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/67822\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/66364"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=67822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=67822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=67822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}