{"id":16545,"date":"2022-10-31T17:39:34","date_gmt":"2022-10-31T17:39:34","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=16545"},"modified":"2022-10-31T17:39:34","modified_gmt":"2022-10-31T17:39:34","slug":"antarctica-sea-ice-growth-climate-change","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/climate-science\/antarctica-sea-ice-growth-climate-change\/","title":{"rendered":"Pro\u010d roste mo\u0159sk\u00fd led Antarktidy, zat\u00edmco teploty stoupaj\u00ed?"},"content":{"rendered":"

Pro\u010d roste mo\u0159sk\u00fd led v Antarktid\u011b, kdy\u017e teploty stoupaj\u00ed?<\/h2>\n\n

Pochopen\u00ed kontraintuitivn\u00edho jevu<\/h2>\n\n

P\u0159es stoupaj\u00edc\u00ed glob\u00e1ln\u00ed teploty se mo\u0159sk\u00fd led kolem Antarktidy rozr\u016fst\u00e1. Tento kontraintuitivn\u00ed jev zm\u00e1tl jak v\u011bdce, tak skeptiky ohledn\u011b zm\u011bny klimatu.<\/p>\n\n

Role pol\u00e1rn\u00edho v\u00edru<\/h2>\n\n

Nov\u00fd v\u00fdzkum nazna\u010duje, \u017ee za r\u016fst ledu je zodpov\u011bdn\u00fd mechanismus nesouvisej\u00edc\u00ed se zm\u011bnou klimatu: zes\u00edlen\u00ed a sb\u00edhavost pol\u00e1rn\u00edho v\u00edru, v\u00ed\u0159\u00edc\u00edho v\u00edru v\u011btr\u016f, kter\u00fd obklopuje ji\u017en\u00ed p\u00f3l.<\/p>\n\n

Jak pol\u00e1rn\u00ed v\u00edr poh\u00e1n\u00ed r\u016fst ledu<\/h2>\n\n

Pomoc\u00ed po\u010d\u00edta\u010dov\u00e9ho modelu v\u011bdci zjistili, \u017ee zes\u00edlen\u00fd pol\u00e1rn\u00ed v\u00edr tla\u010d\u00ed plovouc\u00ed vrstvy mo\u0159sk\u00e9ho ledu k sob\u011b a stla\u010duje je do tlust\u00fdch h\u0159eben\u016f. Tyto h\u0159ebeny taj\u00ed pomaleji, co\u017e vede ke zv\u011bt\u0161en\u00ed ledov\u00e9 pokr\u00fdvky.<\/p>\n\n

Zv\u00fd\u0161en\u00fd r\u016fst ledu a sn\u00ed\u017een\u00e9 t\u00e1n\u00ed<\/h2>\n\n

Tvorba h\u0159eben\u016f vytv\u00e1\u0159\u00ed v\u00edce otev\u0159en\u00e9 vody a oblast\u00ed s tenk\u00fdm ledem, kter\u00e9 jsou v zim\u011b vystaveny chladn\u00e9mu vzduchu, co\u017e vede ke zv\u00fd\u0161en\u00e9mu r\u016fstu ledu. Mezit\u00edm se h\u0159ebeny, hnan\u00e9 v\u011btrem k sob\u011b, v l\u00e9t\u011b m\u00e9n\u011b zmen\u0161uj\u00ed, proto\u017ee tlust\u0161\u00ed led m\u00e1 tendenci p\u0159e\u017e\u00edt d\u00e9le.<\/p>\n\n

Konkr\u00e9tn\u00ed oblasti r\u016fstu ledu<\/h2>\n\n

Model p\u0159esn\u011b p\u0159edpov\u011bd\u011bl r\u016fst ledu v mo\u0159\u00edch Weddell, Bellingshausen, Amundsen a Ross, kde byl pozorov\u00e1n nejv\u00fdrazn\u011bji.<\/p>\n\n

Mo\u017en\u00e9 p\u0159\u00ed\u010diny zes\u00edlen\u00e9ho pol\u00e1rn\u00edho v\u00edru<\/h2>\n\n

V\u011bdci si st\u00e1le nejsou jisti, co zp\u016fsobuje zes\u00edlen\u00ed pol\u00e1rn\u00edho v\u00edru. Jedn\u00edm z mo\u017en\u00fdch vin\u00edk\u016f je d\u00edra v ozonov\u00e9 vrstv\u011b, kter\u00e1 ovliv\u0148uje m\u00edstn\u00ed rovnov\u00e1hu a p\u0159enos energie, co\u017e potenci\u00e1ln\u011b vede k siln\u011bj\u0161\u00edm v\u011btr\u016fm. Dal\u0161\u00ed mo\u017enost\u00ed je, \u017ee zes\u00edlen\u00e9 v\u011btry lze jednodu\u0161e p\u0159ipsat p\u0159irozen\u00e9 variabilit\u011b.<\/p>\n\n

Omezen\u00fd dopad ve srovn\u00e1n\u00ed se ztr\u00e1tou ledu v Arktid\u011b<\/h2>\n\n

I kdy\u017e pozorovan\u00fd \u00fa\u010dinek r\u016fstu ledu v Antarktid\u011b byl relativn\u011b mal\u00fd ve srovn\u00e1n\u00ed s rychle taj\u00edc\u00edm ledem v Arktid\u011b, vyvol\u00e1v\u00e1 d\u016fle\u017eit\u00e9 ot\u00e1zky o komplexn\u00edch interakc\u00edch mezi zm\u011bnou klimatu a region\u00e1ln\u00edmi pov\u011btrnostn\u00edmi vzory.<\/p>\n\n

Pokra\u010duj\u00edc\u00ed oteplov\u00e1n\u00ed a budouc\u00ed dopady<\/h2>\n\n

Navzdory sou\u010dasn\u00e9mu trendu r\u016fstu ledu v Antarktid\u011b v\u011bdci zd\u016fraz\u0148uj\u00ed, \u017ee jej pravd\u011bpodobn\u011b p\u0159ev\u00fd\u0161\u00ed pokra\u010duj\u00edc\u00ed n\u00e1r\u016fst emis\u00ed sklen\u00edkov\u00fdch plyn\u016f a zm\u011bna klimatu, kterou zp\u016fsobuj\u00ed. Pokud oteplov\u00e1n\u00ed bude pokra\u010dovat, trend r\u016fstu ledu se nakonec obr\u00e1t\u00ed.<\/p>\n\n

Implikace pro pochopen\u00ed zm\u011bny klimatu<\/h2>\n\n

Kontraintuitivn\u00ed r\u016fst mo\u0159sk\u00e9ho ledu v Antarktid\u011b zd\u016fraz\u0148uje pot\u0159ebu pr\u016fb\u011b\u017en\u00e9ho v\u00fdzkumu a komplexn\u00edho porozum\u011bn\u00ed zm\u011bn\u011b klimatu. Ukazuje, \u017ee region\u00e1ln\u00ed pov\u011btrnostn\u00ed vzorce mohou m\u00edt komplexn\u00ed a n\u011bkdy neo\u010dek\u00e1van\u00e9 \u00fa\u010dinky na m\u00edstn\u00ed klimatick\u00e9 podm\u00ednky.<\/p>","protected":false},"excerpt":{"rendered":"

Pro\u010d roste mo\u0159sk\u00fd led v Antarktid\u011b, kdy\u017e teploty stoupaj\u00ed? Pochopen\u00ed kontraintuitivn\u00edho jevu P\u0159es stoupaj\u00edc\u00ed glob\u00e1ln\u00ed teploty se mo\u0159sk\u00fd led kolem Antarktidy rozr\u016fst\u00e1. Tento kontraintuitivn\u00ed jev zm\u00e1tl jak v\u011bdce, tak skeptiky…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[284],"tags":[721,21904,5567,21905,19465,34],"class_list":["post-16545","post","type-post","status-publish","format-standard","hentry","category-climate-science","tag-antarctica","tag-ice-ridging","tag-sea-ice","tag-ozone-layer","tag-polar-vortex","tag-climate-change"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/16545","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=16545"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/16545\/revisions"}],"predecessor-version":[{"id":16546,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/16545\/revisions\/16546"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=16545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=16545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=16545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}