{"id":688460,"date":"2026-04-21T09:46:04","date_gmt":"2026-04-21T09:46:04","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=688460"},"modified":"2026-04-21T09:46:04","modified_gmt":"2026-04-21T09:46:04","slug":"pierderea-ghetii-marine-arctice-arata-un-declin-sistematic-avertizeaza-cercetatorii","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=688460","title":{"rendered":"Pierderea ghe\u021bii marine arctice arat\u0103 un declin sistematic, avertizeaz\u0103 cercet\u0103torii"},"content":{"rendered":"
<\/div>\n

Aceste noi date \u00eent\u0103resc concluziile oamenilor de \u0219tiin\u021b\u0103 conform c\u0103rora tendin\u021ba descendent\u0103 a stratului de ghea\u021b\u0103 continu\u0103.<\/p>\n

Suprafa\u021ba maxim\u0103 a ghe\u021bii din acest an se situeaz\u0103 cu aproximativ 1,3 milioane de kilometri p\u0103tra\u021bi, sub media din perioada 1981-2010, potrivit Centrului Na\u021bional de Date privind Z\u0103pada \u0219i Ghea\u021ba (NSIDC).<\/p>\n

\u00centre timp, \u00een Antarctica, care a intrat acum \u00een toamn\u0103, minimul anual al ghe\u021bii marine de var\u0103 a fost \u00eenregistrat la 2,58 milioane de kilometri p\u0103tra\u021bi pe 26 februarie \u2013 cu 260.000 de kilometri p\u0103tra\u021bi sub media din perioada 1981-2010. Cifra, \u00eens\u0103, este \u00eenc\u0103 peste minimul record de 1,79 milioane de kilometri p\u0103tra\u021bi, stabilit pe 21 februarie 2023.<\/p>\n

Ghea\u021ba marin\u0103 este echilibrul care sus\u021bine via\u021ba pe P\u0103m\u00e2nt<\/h2>\n

\u00centr-un interviu acordat publica\u021biei Anadolu<\/a>, Mahmut Oguz Selb\u0435soglu, directorul Centrului de Cercetare Polar\u0103 al Universit\u0103\u021bii Tehnice din Istanbul, a declarat c\u0103 ghe\u021barii \u0219i ghea\u021ba marin\u0103 joac\u0103 un rol esen\u021bial \u00een men\u021binerea echilibrului radiativ al planetei. Simplu spus, este echilibrul care sus\u021bine via\u021ba pe P\u0103m\u00e2nt.<\/p>\n

Pe m\u0103sur\u0103 ce ghea\u021ba se tope\u0219te, acest echilibru se schimb\u0103: evaporarea cre\u0219te, efectul de ser\u0103 se intensific\u0103, iar \u00eenc\u0103lzirea global\u0103 se accelereaz\u0103, cre\u00e2nd un ciclu de pierdere continu\u0103 a ghe\u021bii, a spus el.<\/p>\n

Arctica se \u00eenc\u0103lze\u0219te de patru ori mai repede dec\u00e2t rata medie global\u0103<\/h2>\n

Selbesoglu a remarcat c\u0103 topirea este concentrat\u0103 \u00een zonele marginale de ghea\u021b\u0103 din Marea Barents, Marea Bering \u0219i zonele periferice ale Atlanticului de Nord.<\/p>\n

Arctica se \u00eenc\u0103lze\u0219te de patru ori mai repede dec\u00e2t rata medie global\u0103, a spus el.<\/p>\n

El a explicat c\u0103 amplificarea arctic\u0103 determin\u0103 declinul ghe\u021bii marine \u0219i consolideaz\u0103 efectul de topire a ghe\u021bii sub ghea\u021b\u0103 a oceanului, ceea ce \u00eenseamn\u0103 c\u0103, chiar \u0219i atunci c\u00e2nd stratul de ghea\u021b\u0103 se extinde temporar, acesta este mai sub\u021bire \u0219i, prin urmare, mai vulnerabil \u0219i se tope\u0219te mai rapid.<\/p>\n

Selbesoglu a men\u021bionat c\u0103 maximul ghe\u021bii marine de anul trecut a fost at\u00e2t minimul anual, c\u00e2t \u0219i minimul istoric.<\/p>\n

\u201eAproape toate valorile maxime record au avut loc \u00een ultimii zece ani. Acest lucru este foarte semnificativ, deoarece ne spune c\u0103 exist\u0103 o tendin\u021b\u0103 sistematic\u0103 \u0219i accelerat\u0103 aici \u2013 nu este vorba doar de topirea verii, ci de o reducere a cantit\u0103\u021bii de ghea\u021b\u0103 care ar trebui s\u0103 se formeze iarna. Acesta este un rezultat care indic\u0103 o sl\u0103bire sistematic\u0103 \u0219i structural\u0103 a sistemului\u201d, a spus el.<\/p>\n

El a descris procesul ca un lan\u021b de evenimente declan\u0219atoare reciproc. Pe m\u0103sur\u0103 ce suprafa\u021ba alb\u0103 se mic\u0219oreaz\u0103, mai mult\u0103 lumin\u0103 solar\u0103 este absorbit\u0103 dec\u00e2t reflectat\u0103, gener\u00e2nd mai mult\u0103 c\u0103ldur\u0103 \u2013 ceea ce, la r\u00e2ndul s\u0103u, \u00eenseamn\u0103 o pierdere mai mare de ghea\u021b\u0103, o evaporare mai mare \u0219i un efect de ser\u0103 mai puternic.<\/p>\n

\u201eAcest lucru duce la schimb\u0103ri climatice \u0219i la r\u0103spunsuri meteorologice severe, cum ar fi evenimentele meteorologice extreme\u201d, a ad\u0103ugat Selbesoglu.<\/p>\n

De ce e necesar\u0103 stoparea pierderii ghe\u021bii<\/h2>\n

Selbesoglu a subliniat c\u0103 stoparea pierderii ghe\u021bii necesit\u0103 reducerea emisiilor de gaze cu efect de ser\u0103, eliminarea treptat\u0103 a combustibililor fosili, accelerarea tranzi\u021biei c\u0103tre energia regenerabil\u0103, reducerea emisiilor de carbon negru \u0219i implementarea unor m\u0103suri care vizeaz\u0103 \u00een mod specific regiunea arctic\u0103.<\/p>\n

El a concluzionat men\u021bion\u00e2nd c\u0103 schimb\u0103rile care au loc \u00een Arctica nu au o semnifica\u021bie local\u0103, ci global\u0103 \u2014 servind drept semnal de avertizare timpurie pentru viitorul \u00eentregului sistem climatic.<\/p>\n","protected":false},"excerpt":{"rendered":"

Aceste noi date \u00eent\u0103resc concluziile oamenilor de \u0219tiin\u021b\u0103 conform c\u0103rora tendin\u021ba descendent\u0103 a stratului de ghea\u021b\u0103 continu\u0103. Suprafa\u021ba maxim\u0103 a ghe\u021bii din acest an se situeaz\u0103 cu aproximativ 1,3 milioane … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":688461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/688460"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=688460"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/688460\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/688461"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=688460"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=688460"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=688460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}