{"id":37451,"date":"2025-08-28T07:08:40","date_gmt":"2025-08-28T05:08:40","guid":{"rendered":"https:\/\/www.co2news.sk\/?p=37451"},"modified":"2025-08-28T07:09:15","modified_gmt":"2025-08-28T05:09:15","slug":"mrazive-varovanie-z-antarktidy-co-hrozi-ak-zapadny-antarkticky-ladovy-stit-wais-skolabuje","status":"publish","type":"post","link":"https:\/\/www.co2news.sk\/ar\/2025\/08\/28\/mrazive-varovanie-z-antarktidy-co-hrozi-ak-zapadny-antarkticky-ladovy-stit-wais-skolabuje\/","title":{"rendered":"\u062a\u062d\u0630\u064a\u0631 \u0645\u0631\u0639\u0628 \u0645\u0646 \u0627\u0644\u0642\u0627\u0631\u0629 \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062c\u0646\u0648\u0628\u064a\u0629: \u0645\u0627\u0630\u0627 \u0633\u064a\u062d\u062f\u062b \u0625\u0630\u0627 \u0627\u0646\u0647\u0627\u0631 \u0627\u0644\u063a\u0637\u0627\u0621 \u0627\u0644\u062c\u0644\u064a\u062f\u064a \u0644\u063a\u0631\u0628 \u0627\u0644\u0642\u0627\u0631\u0629 \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062c\u0646\u0648\u0628\u064a\u0629\u061f"},"content":{"rendered":"

\u062f\u0631\u0627\u0633\u0629 \u062c\u062f\u064a\u062f\u0629 \u0646\u064f\u0634\u0631\u062a \u0641\u064a Communications Earth & Environment<\/em> a veden\u00e1 v\u00fdskumn\u00edkmi z Potsdamsk\u00e9ho in\u0161tit\u00fatu (PIK), RNORC a Northumbria University ukazuje: u\u017e mal\u00e9 otep\u013eovanie okolo Z\u00e1padnej Antarkt\u00eddy m\u00f4\u017ee spusti\u0165 kolaps WAIS. Tento proces by mohol vyvola\u0165 zv\u00fd\u0161enie hladiny oce\u00e1nov o pribli\u017ene 4 metre<\/strong>, a to postupne po\u010das nieko\u013ek\u00fdch storo\u010d\u00ed \u2013 no ide o prakticky nezvratn\u00fd jav.
\n(pik-potsdam.de<\/a><\/span>, ScienceDaily<\/a><\/span>)<\/p>\n

Nevr\u00e1tenie ochrnutia roz\u0161irenej doby<\/h5>\n

Pod\u013ea Davida Chandlera (RNORC), WAIS m\u00e1 v uplynul\u00fdch 800 000 rokoch dva stabiln\u00e9 re\u017eimy: jeden so zachovan\u00fdm \u013eadov\u00fdm \u0161t\u00edtom (aktu\u00e1lny stav) a druh\u00fd, ke\u010f WAIS skolaboval. Prechod do kolabovan\u00e9ho stavu mo\u017eno spusti\u0165 ve\u013emi mal\u00fdm oteplen\u00edm oce\u00e1nu. A po n\u00e1behu sa \u0161t\u00edt udr\u017e\u00ed v kolabovanom stave aj bez \u010fal\u0161ieho oteplovania \u2013 jeho obnovenie si vy\u017eaduje tis\u00edcky rokov chladnej\u0161ieho prostredia ako predindustri\u00e1lne<\/strong>.
\n(pik-potsdam.de<\/a><\/span>)<\/p>\n

Antarkt\u00edda u\u017e str\u00e1ca \u013ead \u2013 a ve\u013emi r\u00fdchlo<\/h5>\n

\u010eal\u0161ia \u0161t\u00fadia z The Cryosphere<\/em> upozor\u0148uje, \u017ee s\u00fa\u010dasn\u00e9 oce\u00e1nske podmienky m\u00f4\u017eu sta\u010di\u0165 na deglaci\u00e1ciu ve\u013ekej \u010dasti WAIS. Realistick\u00e9 modely predpovedaj\u00fa po\u010diato\u010dn\u00fd pomal\u00fd \u00fastup, nasledovan\u00fd r\u00fdchlou stratou hmoty a\u017e v tempe ~3 mm ro\u010dne zvy\u0161ovania glob\u00e1lnej hladiny mor\u00ed.
\n(tc.copernicus.org<\/a><\/span>)<\/p>\n

Morsk\u00e9 procesy a neistota v predpovediach<\/h5>\n

Hlavn\u00fdm faktom je, \u017ee WAIS spo\u010d\u00edva na z\u00e1kladnej tektonickej \u0161trukt\u00fare \u010dasto pod \u00farov\u0148ou mora, tak\u017ee je extr\u00e9mne zranite\u013en\u00fd vo\u010di otep\u013euj\u00facim sa oce\u00e1nom. Pokra\u010duj\u00face otep\u013eovanie vody v oblasti Amundsenu zni\u017euje oporu \u013eadovej \u0161elfy a umo\u017e\u0148uje r\u00fdchlej\u0161\u00ed odtok \u013eadu do mora \u2014 \u010do vedie k samonak\u0155mav\u00e9mu procesu \u00fastupu zn\u00e1meho ako Marine Ice Sheet Instability<\/em> (MISI).
\n(\u0637\u0628\u064a\u0639\u0629<\/a>, Wikipedia<\/a>)<\/span><\/p>\n

Najzn\u00e1mej\u0161ia hrozba: Thwaites<\/h5>\n

S\u00fa\u010das\u0165ou WAIS je aj ledovec Thwaites, prez\u00fdvan\u00fd \u201cDoomsday Glacier\u201d<\/em>. M\u00e1 ve\u013ekos\u0165 Ve\u013ekej Brit\u00e1nie a hr\u00fabku viac ako 2 km. Jeho \u00fapln\u00fd kolaps by zv\u00fd\u0161il hladinu mora o cca 65 cm, no ak by spustil aj kolaps okolit\u00fdch \u013eadovcov (napr. Pine Island), pr\u00edval by mohol dosiahnu\u0165 nieko\u013eko metrov za storo\u010dia<\/strong>. Od 90. rokov sa jeho prietok viac ne\u017e zdvojn\u00e1sobil a jeho predn\u00e1 \u013eadov\u00e1 poli\u010dka sa rozpad\u00e1va \u2014 potenci\u00e1lne u\u017e do roku 2026.
\n(News.com.au<\/a>, Wikipedia<\/a><\/span>)<\/p>\n

V akom stave je plan\u00e9ta? Alarm \u010di n\u00e1dej?<\/h5>\n

Pod\u013ea Dr. Louise Sime z British Antarctic Survey, ke\u010f\u017ee WAIS preva\u017ene spo\u010d\u00edva pod hladinou mora, je jeho kolaps ove\u013ea v\u00e1\u017enej\u0161\u00ed ne\u017e ten z Gr\u00f3nska. Tento proces m\u00f4\u017ee spusti\u0165 kl\u00edmate upriamen\u00fd posun, ak z\u00e1sahy nepr\u00eddu r\u00fdchlo.
\n(\u0635\u062d\u064a\u0641\u0629 \u0627\u0644\u063a\u0627\u0631\u062f\u064a\u0627\u0646<\/a>)<\/p>\n

Na druhej strane, milimetrov\u00e9 ro\u010dn\u00e9 zmeny sa s\u00edce zdaj\u00fa mal\u00e9, no postupne ved\u00fa k dramatick\u00fdm n\u00e1sledkom \u2014 a \u010dasto prekra\u010duj\u00fa predpoklady IPCC \u010di in\u00e9 modelov\u00e9 scen\u00e1re.<\/p>\n

WAIS predstavuje jeden z najz\u00e1va\u017enej\u0161\u00edch klimatick\u00fdch tipping bodov. Modely potvrdzuj\u00fa, \u017ee mal\u00fd n\u00e1rast teploty oce\u00e1nov m\u00f4\u017ee spusti\u0165 kolaps, ktor\u00fd u\u017e nie je mo\u017en\u00e9 zastavi\u0165. H\u013ead\u00e1me \u010dasov\u00fd okraj rokov, desa\u0165ro\u010d\u00ed \u2014 zatia\u013e \u010do sp\u00e4tn\u00e9mu rastu \u013eadov\u00e9ho \u0161t\u00edtu by trvalo tis\u00edcky rokov. Tento v\u00fdvoj zv\u00fdraz\u0148uje urgentnos\u0165 politick\u00fdch rozhodnut\u00ed vstavan\u00fdch do dekarboniz\u00e1cie, ochranu kl\u00edmy a oce\u00e1nov. CO2AI\u00a0<\/i><\/b><\/p>","protected":false},"excerpt":{"rendered":"

Nov\u00e1 \u0161t\u00fadia publikovan\u00e1 v Communications Earth & Environment a veden\u00e1 v\u00fdskumn\u00edkmi z Potsdamsk\u00e9ho in\u0161tit\u00fatu (PIK), RNORC a Northumbria University ukazuje: u\u017e mal\u00e9 otep\u013eovanie okolo Z\u00e1padnej Antarkt\u00eddy m\u00f4\u017ee<\/p>","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-37451","post","type-post","status-publish","format-standard","hentry","category-klimaticka-zmena"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/posts\/37451","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/comments?post=37451"}],"version-history":[{"count":0,"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/posts\/37451\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/media?parent=37451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/categories?post=37451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.co2news.sk\/ar\/wp-json\/wp\/v2\/tags?post=37451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}