{"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\/ro\/arctic-sea-ice-thinning-in-the-fast-lane\/","title":{"rendered":"Sub\u021bierea ghe\u021bii din Marea Arctic\u0103, pe banda rapid\u0103"},"content":{"rendered":"

Arctica se sub\u021biaz\u0103 de dou\u0103 ori mai repede dec\u00e2t se a\u0219tepta.<\/strong><\/h2>\n\n\n\n

Un model actualizat sugereaz\u0103 c\u0103 ghea\u021ba de mare de-a lungul coastelor Arcticii se sub\u021biaz\u0103 de dou\u0103 ori mai repede dec\u00e2t se a\u0219tepta.<\/p>\n\n\n\n

Natura se deterioreaz\u0103 odat\u0103 cu cre\u0219terea \u00eenc\u0103lzirii globale \u0219i a schimb\u0103rilor climatice. Pe m\u0103sur\u0103 ce ghea\u021ba polar\u0103 se tope\u0219te rapid, aceasta cauzeaz\u0103 o pierdere a biodiversit\u0103\u021bii \u0219i ridic\u0103 \u00eengrijor\u0103ri cu privire la nivelul m\u0103rii.<\/p>\n\n\n\n

Check out Galeria Mind the Graph<\/a> pentru ilustra\u021bii legate de ghea\u021ba de mare. Face\u021bi clic pe imaginea de mai jos!<\/p>\n\n\n\n

\"ilustra\u021bii<\/a><\/figure>\n\n\n\n

Grosimea ghe\u021bii marine serve\u0219te drept barometru pentru a \u00een\u021belege starea regiunii arctice. Cu c\u00e2t ghea\u021ba este mai groas\u0103, cu at\u00e2t mai mult\u0103 izolare termic\u0103 ac\u021bioneaz\u0103 ca o izola\u021bie, \u00eempiedic\u00e2nd cre\u0219terea temperaturii la suprafa\u021ba oceanului \u00een timpul iernii \u0219i oferind protec\u021bie \u00eempotriva c\u0103ldurii \u00een timpul verii.<\/p>\n\n\n\n

De asemenea, este mai pu\u021bin probabil ca topirea verii arctice s\u0103 fie sus\u021binut\u0103 de ghea\u021ba mai sub\u021bire.<\/p>\n\n\n\n

Prin urmare, cercet\u0103torii au evaluat rezultatele unui program informatic nou dezvoltat, destinat s\u0103 estimeze diferen\u021ba de strat de z\u0103pad\u0103 anual \u0219i au identificat sub\u021bierea ghe\u021bii marine<\/strong> accelerat mult mai mult dec\u00e2t se anticipa.<\/p>\n\n\n\n

Scopul \u0219i obiectivele studiului<\/strong><\/h2>\n\n\n\n

Deoarece acoperirea de ghea\u021b\u0103 marin\u0103 modereaz\u0103 schimbul aer-ap\u0103 \u0219i transferul de c\u0103ldur\u0103 \u00eentre oceane \u0219i atmosfer\u0103, aceasta are implica\u021bii asupra ecosistemelor regionale, a modelelor de v\u00e2nturi emisferice \u0219i a climei globale.<\/p>\n\n\n\n

Izolarea termic\u0103 cre\u0219te odat\u0103 cu cre\u0219terea grosimii ghe\u021bii marine, astfel \u00eenc\u00e2t temperaturile r\u0103m\u00e2n mai sc\u0103zute iarna.<\/p>\n\n\n\n

De asemenea, grosimea ghe\u021bii de mare \u00een timpul acumul\u0103rii de z\u0103pad\u0103 este cea care determin\u0103 ad\u00e2ncimea ghe\u021bii de mare sub suprafa\u021ba apei, contribuind substan\u021bial la cre\u0219terea termodinamic\u0103 a ghe\u021bii de mare. Grosimea ghe\u021bii de mare este, prin urmare, un indicator important al s\u0103n\u0103t\u0103\u021bii regiunii. <\/p>\n\n\n\n

Cercet\u0103torii au folosit CryoSat-2<\/a> pentru a m\u0103sura grosimea ghe\u021bii de mare pentru acest studiu.<\/p>\n\n\n\n

Scopul a fost de a compara datele disponibile din vechiul model cu un nou model care implica schimb\u0103ri climatice.<\/p>\n\n\n\n

\u00cen\u0103l\u021bimea ghe\u021bii deasupra apei poate fi determinat\u0103 prin cronometrarea timpului de reflexie a undelor radar, ceea ce duce la o estimare a grosimii acesteia.<\/p>\n\n\n\n

SnowModel-LG, un model lagrangian de acumulare a z\u0103pezii, a fost utilizat pentru a prezice ad\u00e2ncimea \u0219i densitatea total\u0103 a z\u0103pezii \u00een diferite loca\u021bii din jurul Oceanului Arctic, lu\u00e2nd \u00een considerare v\u00e2ntul, temperatura, precipita\u021biile \u0219i analiza mi\u0219c\u0103rii ghe\u021bii.<\/p>\n\n\n\n

A urmat apoi combinarea rezultatelor modelului de z\u0103pad\u0103 cu date de la radarele prin satelit pentru a estima c\u00e2t de rapid scade grosimea ghe\u021bii marine \u00een Arctica \u0219i cum poate varia \u00een timp.<\/p>\n\n\n\n

\"ghea\u021b\u0103<\/a>
Sursa imaginii: Unsplash<\/a> de Cassie Matias<\/a><\/figcaption><\/figure>\n\n\n\n

Ca urmare:<\/strong><\/h2>\n\n\n\n

La variabilitatea grosimii ghe\u021bii de mare \u00een m\u0103rile marginale s-a ad\u0103ugat un factor de 50 la sut\u0103 prin includerea variabilit\u0103\u021bii stratului de z\u0103pad\u0103.<\/p>\n\n\n\n

Conform studiului lor, fluctua\u021bia stratului de z\u0103pad\u0103 contribuie \u00eentr-o propor\u021bie din ce \u00een ce mai mare la variabilitatea grosimii deduse a ghe\u021bii marine, cresc\u00e2nd de la aproximativ 20% la peste 70% pe o scar\u0103 de timp sezonier\u0103.<\/p>\n\n\n\n

Tendin\u021bele determinate de datele SnowModel-LG au fost, de asemenea, observate \u00een statisticile privind grosimea ghe\u021bii de mare, amplific\u00e2nd sc\u0103derile \u00een zonele \u00een care acestea existau deja \u0219i introduc\u00e2nd pierderi substan\u021biale \u00een loca\u021bii care nu le aveau deja.<\/p>\n\n\n\n

Cre\u0219terea amprentei de carbon duce la diminuarea calotelor de ghea\u021b\u0103, deoarece oamenii au crescut semnificativ num\u0103rul de activit\u0103\u021bi care afecteaz\u0103 mediul \u00eenconjur\u0103tor. Mai multe specii de animale din regiunile polare \u0219i-au pierdut, de asemenea, habitatul din cauza acestei topiri. O abordare holistic\u0103 pentru evaluarea grosimii ghe\u021bii marine va fi oferit\u0103 prin intermediul modelului lor integrat, care acoper\u0103 diferen\u021bele dintre sistemele de analiz\u0103 \u00eenvechite \u0219i \u00eencorporeaz\u0103 factori precum schimb\u0103rile climatice.<\/p>\n\n\n\n

Cercetarea lor reprezint\u0103 o etap\u0103 important\u0103 care poate contribui cu siguran\u021b\u0103 la o imagine mai ampl\u0103 pentru a examina cauza real\u0103.<\/p>\n\n\n\n

Pentru a afla mai multe despre cercetarea lor, consulta\u021bi referin\u021ba men\u021bionat\u0103 mai jos. <\/p>\n\n\n\n

Robbie D. C. Mallett, Julienne C. Stroeve, Michel Tsamados, Jack C. Landy, Rosemary Willatt, Vishnu Nandan, Glen E. Liston. Sc\u0103dere mai rapid\u0103 \u0219i variabilitate mai mare a grosimii ghe\u021bii marine din m\u0103rile arctice marginale atunci c\u00e2nd se ia \u00een considerare stratul de z\u0103pad\u0103 dinamic. The Cryosphere, 2021; 15 (5): 2429<\/a> DOI: 10.5194\/tc-15-2429-2021<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Arctica se sub\u021biaz\u0103 de dou\u0103 ori mai repede dec\u00e2t se a\u0219tepta. Un model actualizat sugereaz\u0103 c\u0103 ghea\u021ba de mare de-a lungul coastelor Arcticii se sub\u021biaz\u0103 de dou\u0103 ori mai repede dec\u00e2t se a\u0219tepta. Natura se deterioreaz\u0103 odat\u0103 cu cre\u0219terea \u00eenc\u0103lzirii globale \u0219i a schimb\u0103rilor climatice. Pe m\u0103sur\u0103 ce ghea\u021ba polar\u0103 se tope\u0219te rapid, aceasta cauzeaz\u0103 o pierdere a biodiversit\u0103\u021bii \u0219i ridic\u0103 \u00eengrijor\u0103ri [...]<\/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\/ro\/arctic-sea-ice-thinning-in-the-fast-lane\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\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\/ro\/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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