{"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\/sl\/arkticno-morska-ledena-plitvina-na-hitrem-pasu\/","title":{"rendered":"Hitro tanj\u0161anje arkti\u010dnega morskega ledu"},"content":{"rendered":"

Arktika se tanj\u0161a dvakrat hitreje, kot je bilo pri\u010dakovano.<\/strong><\/h2>\n\n\n\n

Posodobljen model ka\u017ee, da se morski led ob obalah Arktike tanj\u0161a dvakrat hitreje, kot je bilo pri\u010dakovano.<\/p>\n\n\n\n

Narava se zaradi vse ve\u010djega globalnega segrevanja in podnebnih sprememb slab\u0161a. Zaradi hitrega taljenja ledu na polih se izgublja biotska raznovrstnost, zaskrbljujo\u010da pa je tudi vi\u0161ina morske gladine.<\/p>\n\n\n\n

Oglejte si Galerija Mind the Graph<\/a> za ilustracije, povezane z morskim ledom. Kliknite na spodnjo sliko!<\/p>\n\n\n\n

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

Debelina morskega ledu je barometer za razumevanje stanja na Arktiki. \u010cim debelej\u0161i je led, tem ve\u010dja je njegova toplotna izolacija, ki pozimi prepre\u010duje dvigovanje temperature na povr\u0161ini oceana, poleti pa \u0161\u010diti pred vro\u010dino.<\/p>\n\n\n\n

Prav tako je manj verjetno, da bo poletno taljenje na Arktiki podprto s tanj\u0161im ledom.<\/p>\n\n\n\n

Zato so raziskovalci ocenili rezultate novo razvitega ra\u010dunalni\u0161kega programa, namenjenega ocenjevanju letne razlike v globini snega, in ugotovili, da tanj\u0161anje morskega ledu<\/strong> se je pospe\u0161ila precej bolj, kot je bilo pri\u010dakovano.<\/p>\n\n\n\n

Namen in cilji \u0161tudije<\/strong><\/h2>\n\n\n\n

Ker morski ledeni pokrov bla\u017ei izmenjavo zraka in vode ter prenos toplote med oceani in ozra\u010djem, vpliva na regionalne ekosisteme, vzorce vetrov na polobli in globalno podnebje.<\/p>\n\n\n\n

Z debelej\u0161im morskim ledom se pove\u010da toplotna izolacija, zato so temperature pozimi ni\u017eje.<\/p>\n\n\n\n

Debelina morskega ledu med kopi\u010denjem snega dolo\u010da tudi globino morskega ledu pod vodno gladino, kar bistveno prispeva k termodinami\u010dni rasti morskega ledu. Debelina morskega ledu je zato pomemben kazalnik zdravja regije. <\/p>\n\n\n\n

Raziskovalci so uporabili CryoSat-2<\/a> satelitski radar za merjenje debeline morskega ledu v tej \u0161tudiji.<\/p>\n\n\n\n

Cilj je bil primerjati podatke, ki so bili na voljo na podlagi starega modela, z novim modelom, ki je vklju\u010deval podnebne spremembe.<\/p>\n\n\n\n

Vi\u0161ino ledu nad vodo lahko ugotovimo tako, da izmerimo \u010das, v katerem se radarski valovi odbijajo, in tako ocenimo njegovo debelino.<\/p>\n\n\n\n

Model SnowModel-LG, Lagrangeev model kopi\u010denja snega, je bil uporabljen za napovedovanje skupne globine in gostote snega na razli\u010dnih lokacijah okoli Arkti\u010dnega oceana ob upo\u0161tevanju vetra, temperature, padavin in analize gibanja ledu.<\/p>\n\n\n\n

Sledila je kombinacija rezultatov modela snega s podatki satelitskega radarja, da bi ocenili, kako hitro se debelina morskega ledu na Arktiki zmanj\u0161uje in kako se lahko s\u010dasoma spreminja.<\/p>\n\n\n\n

\"velik<\/a>
Vir slike: Unsplash<\/a> po Cassie Matias<\/a><\/figcaption><\/figure>\n\n\n\n

Posledi\u010dno:<\/strong><\/h2>\n\n\n\n

Pri variabilnosti debeline morskega ledu v obrobnih morjih je bil z vklju\u010ditvijo variabilnosti sne\u017ene odeje dodan 50-odstotni faktor.<\/p>\n\n\n\n

Po njihovi \u0161tudiji nihanje sne\u017ene odeje prispeva vse ve\u010dji dele\u017e k spremenljivosti predvidene debeline morskega ledu, ki se na sezonski ravni pove\u010da s pribli\u017eno 20% na ve\u010d kot 70%.<\/p>\n\n\n\n

Trendi, ki so jih povzro\u010dili podatki SnowModel-LG, so bili opa\u017eeni tudi v statistiki debeline morskega ledu, ki je pove\u010dala upadanje na obmo\u010djih, kjer je ta \u017ee obstajal, in povzro\u010dila znatne izgube na lokacijah, kjer ga \u0161e ni bilo.<\/p>\n\n\n\n

Vedno ve\u010dji oglji\u010dni odtis vodi k zmanj\u0161evanju ledenih plo\u0161\u010d, saj je \u010dlovek znatno pove\u010dal \u0161tevilo dejavnosti, ki vplivajo na okolje. Zaradi taljenja ledu je izgubilo \u017eivljenjski prostor tudi ve\u010d \u017eivalskih vrst na polarnih obmo\u010djih. Celovit pristop k ocenjevanju debeline morskega ledu bo podan z njihovim integriranim modelom, ki zapolnjuje vrzel zastarelih sistemov analize in vklju\u010duje dejavnike, kot so podnebne spremembe.<\/p>\n\n\n\n

Njihova raziskava je pomemben mejnik, ki lahko vsekakor prispeva k \u0161ir\u0161i sliki, da bi ugotovili pravi vzrok.<\/p>\n\n\n\n

\u010ce \u017eelite izvedeti ve\u010d o njihovih raziskavah, si oglejte spodnjo referenco. <\/p>\n\n\n\n

Robbie D. C. Mallett, Julienne C. Stroeve, Michel Tsamados, Jack C. Landy, Rosemary Willatt, Vishnu Nandan, Glen E. Liston. Hitrej\u0161e upadanje in ve\u010dja spremenljivost debeline morskega ledu v obrobnih arkti\u010dnih morjih ob upo\u0161tevanju dinami\u010dne sne\u017ene odeje. The Cryosphere, 2021; 15 (5): 2429<\/a> DOI: 10.5194\/tc-15-2429-2021<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Arktika se tanj\u0161a dvakrat hitreje, kot je bilo pri\u010dakovano. Posodobljen model ka\u017ee, da se morski led ob obalah Arktike tanj\u0161a dvakrat hitreje, kot je bilo pri\u010dakovano. Narava se zaradi vse ve\u010djega globalnega segrevanja in podnebnih sprememb slab\u0161a. Zaradi hitrega taljenja ledu na polih se izgublja biotska raznovrstnost, kar vzbuja zaskrbljenost, da bi se lahko [...]<\/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\/sl\/arkticno-morska-ledena-plitvina-na-hitrem-pasu\/\" \/>\n<meta property=\"og:locale\" content=\"sl_SI\" \/>\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\/sl\/arkticno-morska-ledena-plitvina-na-hitrem-pasu\/\" \/>\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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