{"id":13092,"date":"2021-07-08T11:00:00","date_gmt":"2021-07-08T14:00:00","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/?p=13092"},"modified":"2023-01-05T13:48:01","modified_gmt":"2023-01-05T16:48:01","slug":"arctic-sea-ice-thinning-in-the-fast-lane","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/cs\/arctic-sea-ice-thinning-in-the-fast-lane\/","title":{"rendered":"Rychl\u00e9 zten\u010dov\u00e1n\u00ed arktick\u00e9ho mo\u0159sk\u00e9ho ledu"},"content":{"rendered":"

Arktida se zten\u010duje dvakr\u00e1t rychleji, ne\u017e se o\u010dek\u00e1valo.<\/strong><\/h2>\n\n\n\n

Podle aktualizovan\u00e9ho modelu se mo\u0159sk\u00fd led pod\u00e9l pob\u0159e\u017e\u00ed Arktidy zten\u010duje dvakr\u00e1t rychleji, ne\u017e se o\u010dek\u00e1valo.<\/p>\n\n\n\n

P\u0159\u00edroda se s rostouc\u00edm glob\u00e1ln\u00edm oteplov\u00e1n\u00edm a klimatick\u00fdmi zm\u011bnami zhor\u0161uje. Rychl\u00e9 t\u00e1n\u00ed p\u00f3lov\u00e9ho ledu zp\u016fsobuje \u00fabytek biologick\u00e9 rozmanitosti a vyvol\u00e1v\u00e1 obavy z poklesu hladiny mo\u0159\u00ed.<\/p>\n\n\n\n

Pod\u00edvejte se na Galerie Mind the Graph<\/a> pro ilustrace t\u00fdkaj\u00edc\u00ed se mo\u0159sk\u00e9ho ledu. Klikn\u011bte na obr\u00e1zek n\u00ed\u017ee!<\/p>\n\n\n\n

\"ilustrace<\/a><\/figure>\n\n\n\n

Tlou\u0161\u0165ka mo\u0159sk\u00e9ho ledu slou\u017e\u00ed jako barometr pro pochopen\u00ed stavu arktick\u00e9 oblasti. \u010c\u00edm je led siln\u011bj\u0161\u00ed, t\u00edm v\u00edce tepeln\u011b izoluje, v zim\u011b br\u00e1n\u00ed zvy\u0161ov\u00e1n\u00ed teploty povrchu oce\u00e1nu a v l\u00e9t\u011b poskytuje ochranu p\u0159ed horkem.<\/p>\n\n\n\n

Je tak\u00e9 m\u00e9n\u011b pravd\u011bpodobn\u00e9, \u017ee letn\u00ed t\u00e1n\u00ed v Arktid\u011b udr\u017e\u00ed ten\u010d\u00ed led.<\/p>\n\n\n\n

V\u011bdci proto vyhodnotili v\u00fdsledky nov\u011b vyvinut\u00e9ho po\u010d\u00edta\u010dov\u00e9ho programu ur\u010den\u00e9ho k odhadu ro\u010dn\u00edho rozd\u00edlu ve v\u00fd\u0161ce sn\u011bhu a zjistili. zten\u010den\u00ed mo\u0159sk\u00e9ho ledu<\/strong> zrychlil mnohem v\u00edce, ne\u017e se p\u0159edpokl\u00e1dalo.<\/p>\n\n\n\n

\u00da\u010del a c\u00edle studie<\/strong><\/h2>\n\n\n\n

Vzhledem k tomu, \u017ee mo\u0159sk\u00fd ledov\u00fd pokryv zm\u00edr\u0148uje v\u00fdm\u011bnu vzduchu a vody a p\u0159enos tepla mezi oce\u00e1ny a atmosf\u00e9rou, m\u00e1 vliv na region\u00e1ln\u00ed ekosyst\u00e9my, vzorce v\u011btr\u016f na polokouli a glob\u00e1ln\u00ed klima.<\/p>\n\n\n\n

Tepeln\u00e1 izolace se zvy\u0161uje d\u00edky siln\u011bj\u0161\u00edmu mo\u0159sk\u00e9mu ledu, tak\u017ee teploty v zim\u011b z\u016fst\u00e1vaj\u00ed ni\u017e\u0161\u00ed.<\/p>\n\n\n\n

Tlou\u0161\u0165ka mo\u0159sk\u00e9ho ledu b\u011bhem akumulace sn\u011bhu tak\u00e9 ur\u010duje hloubku mo\u0159sk\u00e9ho ledu pod vodn\u00ed hladinou, co\u017e v\u00fdznamn\u011b p\u0159isp\u00edv\u00e1 k termodynamick\u00e9mu r\u016fstu mo\u0159sk\u00e9ho ledu. Tlou\u0161\u0165ka mo\u0159sk\u00e9ho ledu je proto d\u016fle\u017eit\u00fdm ukazatelem zdrav\u00ed regionu. <\/p>\n\n\n\n

V\u00fdzkumn\u00edci pou\u017eili CryoSat-2<\/a> satelitn\u00ed radar k m\u011b\u0159en\u00ed tlou\u0161\u0165ky mo\u0159sk\u00e9ho ledu pro tuto studii.<\/p>\n\n\n\n

C\u00edlem bylo porovnat \u00fadaje dostupn\u00e9 ze star\u00e9ho modelu s nov\u00fdm modelem, kter\u00fd zahrnoval zm\u011bnu klimatu.<\/p>\n\n\n\n

V\u00fd\u0161ku ledu nad hladinou lze zjistit na z\u00e1klad\u011b m\u011b\u0159en\u00ed doby, za kterou se radarov\u00e9 vlny odraz\u00ed, \u010d\u00edm\u017e lze odhadnout jeho tlou\u0161\u0165ku.<\/p>\n\n\n\n

K p\u0159edpov\u011bdi celkov\u00e9 v\u00fd\u0161ky a hustoty sn\u011bhu na r\u016fzn\u00fdch m\u00edstech v okol\u00ed Severn\u00edho ledov\u00e9ho oce\u00e1nu byl pou\u017eit Lagrange\u016fv model akumulace sn\u011bhu SnowModel-LG, kter\u00fd zohled\u0148uje v\u00edtr, teplotu, sr\u00e1\u017eky a anal\u00fdzu pohybu ledu.<\/p>\n\n\n\n

N\u00e1sledovala kombinace v\u00fdsledk\u016f sn\u011bhov\u00e9ho modelu s \u00fadaji ze satelitn\u00edch radar\u016f s c\u00edlem odhadnout, jak rychle se tlou\u0161\u0165ka mo\u0159sk\u00e9ho ledu v Arktid\u011b sni\u017euje a jak se m\u016f\u017ee m\u011bnit v \u010dase.<\/p>\n\n\n\n

\"velk\u00fd<\/a>
Zdroj obr\u00e1zku: Unsplash<\/a> podle Cassie Matias<\/a><\/figcaption><\/figure>\n\n\n\n

V\u00fdsledkem je:<\/strong><\/h2>\n\n\n\n

K variabilit\u011b tlou\u0161\u0165ky mo\u0159sk\u00e9ho ledu v okrajov\u00fdch mo\u0159\u00edch byl p\u0159id\u00e1n faktor 50 %, kter\u00fd zahrnuje variabilitu sn\u011bhov\u00e9 pokr\u00fdvky.<\/p>\n\n\n\n

Podle jejich studie se kol\u00eds\u00e1n\u00ed sn\u011bhov\u00e9 pokr\u00fdvky pod\u00edl\u00ed st\u00e1le v\u011bt\u0161\u00ed m\u011brou na variabilit\u011b odhadovan\u00e9 tlou\u0161\u0165ky mo\u0159sk\u00e9ho ledu, kter\u00e1 se v sez\u00f3nn\u00edm m\u011b\u0159\u00edtku zvy\u0161uje z p\u0159ibli\u017en\u011b 20% na v\u00edce ne\u017e 70%.<\/p>\n\n\n\n

Ve statistik\u00e1ch tlou\u0161\u0165ky mo\u0159sk\u00e9ho ledu byly rovn\u011b\u017e pozorov\u00e1ny trendy zalo\u017een\u00e9 na datech SnowModel-LG, kter\u00e9 zes\u00edlily poklesy v oblastech, kde ji\u017e existovaly, a zavedly zna\u010dn\u00e9 \u00fabytky v m\u00edstech, kde je\u0161t\u011b nebyly.<\/p>\n\n\n\n

Zvy\u0161uj\u00edc\u00ed se uhl\u00edkov\u00e1 stopa vede ke zmen\u0161ov\u00e1n\u00ed ledovc\u016f, proto\u017ee lid\u00e9 v\u00fdrazn\u011b zv\u00fd\u0161ili po\u010det \u010dinnost\u00ed, kter\u00e9 ovliv\u0148uj\u00ed \u017eivotn\u00ed prost\u0159ed\u00ed. V d\u016fsledku t\u00e1n\u00ed ledovc\u016f p\u0159i\u0161lo o \u017eivotn\u00ed prost\u0159ed\u00ed tak\u00e9 n\u011bkolik druh\u016f \u017eivo\u010dich\u016f v pol\u00e1rn\u00edch oblastech. Holistick\u00fd p\u0159\u00edstup k hodnocen\u00ed tlou\u0161\u0165ky mo\u0159sk\u00e9ho ledu poskytne jejich integrovan\u00fd model, kter\u00fd p\u0159eklenuje mezeru zastaral\u00fdch syst\u00e9m\u016f anal\u00fdzy a zahrnuje faktory, jako je zm\u011bna klimatu.<\/p>\n\n\n\n

Jejich v\u00fdzkum je v\u00fdznamn\u00fdm miln\u00edkem, kter\u00fd rozhodn\u011b m\u016f\u017ee p\u0159isp\u011bt k \u0161ir\u0161\u00edmu pohledu na skute\u010dnou p\u0159\u00ed\u010dinu.<\/p>\n\n\n\n

Chcete-li se o jejich v\u00fdzkumu dozv\u011bd\u011bt v\u00edce, pod\u00edvejte se na n\u00ed\u017ee uveden\u00fd odkaz. <\/p>\n\n\n\n

Robbie D. C. Mallett, Julienne C. Stroeve, Michel Tsamados, Jack C. Landy, Rosemary Willatt, Vishnu Nandan, Glen E. Liston. Rychlej\u0161\u00ed pokles a v\u011bt\u0161\u00ed variabilita tlou\u0161\u0165ky mo\u0159sk\u00e9ho ledu v okrajov\u00fdch arktick\u00fdch mo\u0159\u00edch p\u0159i zohledn\u011bn\u00ed dynamick\u00e9 sn\u011bhov\u00e9 pokr\u00fdvky. The Cryosphere, 2021; 15 (5): 2429<\/a> DOI: 10.5194\/tc-15-2429-2021<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Arktida se zten\u010duje dvakr\u00e1t rychleji, ne\u017e se o\u010dek\u00e1valo. Podle aktualizovan\u00e9ho modelu se mo\u0159sk\u00fd led pod\u00e9l pob\u0159e\u017e\u00ed Arktidy zten\u010duje dvakr\u00e1t rychleji, ne\u017e se o\u010dek\u00e1valo. P\u0159\u00edroda se s rostouc\u00edm glob\u00e1ln\u00edm oteplov\u00e1n\u00edm a klimatick\u00fdmi zm\u011bnami zhor\u0161uje. Rychl\u00e9 t\u00e1n\u00ed ledu na p\u00f3lech zp\u016fsobuje \u00fabytek biologick\u00e9 rozmanitosti a vyvol\u00e1v\u00e1 obavy, \u017ee se [...].<\/p>","protected":false},"author":18,"featured_media":13111,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[959,28],"tags":[554],"yoast_head":"\nArctic Sea Ice Thinning, in the Fast Lane - MTG<\/title>\n<meta name=\"description\" content=\"Nature is deteriorating with increasing global warming and climatic changes, and the sea ice along the coasts of the Arctic is thinning two times faster than expected.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mindthegraph.com\/blog\/cs\/arctic-sea-ice-thinning-in-the-fast-lane\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Arctic Sea Ice Thinning, in the Fast Lane\" \/>\n<meta property=\"og:description\" content=\"Nature is deteriorating with increasing global warming and climatic changes, and the sea ice along the coasts of the Arctic is thinning two times faster than expected.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mindthegraph.com\/blog\/cs\/arctic-sea-ice-thinning-in-the-fast-lane\/\" \/>\n<meta property=\"og:site_name\" content=\"Mind the Graph Blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-08T14:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-05T16:48:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/07\/post-thinning-arctic-sea-facebook-01.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bruna Soldera\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Arctic Sea Ice Thinning, in the Fast Lane\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/07\/post-thinning-arctic.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bruna Soldera\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Arctic Sea Ice Thinning, in the Fast Lane - 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