{"id":503284,"date":"2025-02-09T08:16:10","date_gmt":"2025-02-09T05:16:10","guid":{"rendered":"https:\/\/analyse.optim.biz\/?p=503284"},"modified":"2025-02-09T08:16:10","modified_gmt":"2025-02-09T05:16:10","slug":"studiu-arctica-ar-putea-deveni-de-nerecunoscut-pana-in-2100-cercetator-arctica-se-incalzeste-de-patru-ori-mai-rapid-decat-restul-planetei","status":"publish","type":"post","link":"https:\/\/analyse.optim.biz\/?p=503284","title":{"rendered":"STUDIU Arctica ar putea deveni de nerecunoscut p\u00e2n\u0103 \u00een 2100 \/ Cercet\u0103tor: \u201eArctica se \u00eenc\u0103lze\u0219te de patru ori mai rapid dec\u00e2t restul planetei\u201d"},"content":{"rendered":"<div class=\"post-content\">\n<p>\u00cen 2024, temperatura medie global\u0103 a aerului a dep\u0103\u0219it pentru prima dat\u0103 1,5 grade Celsius peste nivelurile preindustriale, declan\u0219\u00e2nd fenomene meteorologice extreme, precum ploi record \u0219i inunda\u021bii \u00een de\u0219ertul Sahara, dar \u0219i valuri extreme de c\u0103ldur\u0103 \u00een timpul verii pe tot globul. \u00cens\u0103, \u00eenc\u0103lzirea global\u0103 nu se va opri la acest nivel, transmite ScienceDaily.<\/p>\n<p>Pe baza angajamentelor actuale ale \u021b\u0103rilor pentru limitarea emisiilor de gaze cu efect de ser\u0103, temperaturile globale sunt proiectate s\u0103 ating\u0103 2,7 grade Celsius peste nivelurile preindustriale p\u00e2n\u0103 la sf\u00e2r\u0219itul acestui secol. Acest scenariu ar transforma dramatic regiunea Arctic\u0103, cea mai rapid \u00eenc\u0103lzit\u0103 zon\u0103 a planetei.<\/p>\n<p>Un nou studiu de referin\u021b\u0103, publicat pe 7 februarie 2025 \u00een revista Science, analizeaz\u0103 aceste schimb\u0103ri \u0219i implica\u021biile lor majore.<\/p>\n<p>Lucrarea, intitulat\u0103 <a href=\"https:\/\/www.science.org\/doi\/10.1126\/science.ads1549\" target=\"_blank\" rel=\"noopener\">\u201ePeisaje care dispar: Arctica la +2,7\u00b0C de \u00eenc\u0103lzire global\u0103\u201d<\/a>, a fost condus\u0103 de Julienne Stroeve, cercet\u0103tor principal la Centrul Na\u021bional de Date despre Z\u0103pad\u0103 \u0219i Ghea\u021b\u0103 (NSIDC) \u0219i profesor la Centrul pentru \u0218tiin\u021ba Observ\u0103rii P\u0103m\u00e2ntului de la Universitatea din Manitoba.<\/p>\n<p>\u201eArctica se \u00eenc\u0103lze\u0219te de patru ori mai rapid dec\u00e2t restul planetei\u201d, a declarat Stroeve.<\/p>\n<p>\u201eLa 2,7 grade Celsius de \u00eenc\u0103lzire global\u0103, vom vedea impacturi extreme \u0219i \u00een cascad\u0103 \u00een aceast\u0103 regiune, mai intense dec\u00e2t oriunde altundeva: veri f\u0103r\u0103 ghea\u021b\u0103 marin\u0103 \u00een Arctica, topirea accelerat\u0103 a calotei glaciare a Groenlandei, pierderea extins\u0103 a permafrostului \u0219i temperaturi atmosferice extreme. Aceste schimb\u0103ri vor devasta infrastructura, ecosistemele, comunit\u0103\u021bile vulnerabile \u0219i fauna s\u0103lbatic\u0103.\u201d<\/p>\n<p>\u00cen acest studiu, autorii au folosit al \u0218aselea Raport de Evaluare al Panelului Interguvernamental pentru Schimb\u0103ri Climatice al ONU ca punct de plecare.<\/p>\n<p>Ei au actualizat cuno\u0219tin\u021bele despre trei aspecte cheie ale mediului Arctic: ghea\u021ba marin\u0103, calota glaciar\u0103 a Groenlandei \u0219i permafrostul.<\/p>\n<p>Principalele efecte ale unei \u00eenc\u0103lziri de 2,7\u00b0C \u00een Arctica:<\/p>\n<ul>\n<li>Aproape fiecare zi a anului va avea temperaturi mai ridicate dec\u00e2t cele extreme \u00eenregistrate \u00een perioada preindustrial\u0103.<\/li>\n<li>Oceanul Arctic va fi lipsit de ghea\u021b\u0103 marin\u0103 timp de mai multe luni \u00een fiecare var\u0103.<\/li>\n<li>Suprafa\u021ba calotei glaciare a Groenlandei expus\u0103 la temperaturi de peste 0\u00b0C timp de mai mult de o lun\u0103 va fi de patru ori mai mare dec\u00e2t \u00een perioada preindustrial\u0103, ceea ce va accelera cre\u0219terea nivelului m\u0103rii.<\/li>\n<li>Stratul de permafrost de suprafa\u021b\u0103 va sc\u0103dea cu 50% fa\u021b\u0103 de nivelurile preindustriale.<\/li>\n<\/ul>\n<p>\u201eLucrarea noastr\u0103 arat\u0103 c\u0103, deja ast\u0103zi, omenirea are puterea de a \u0219terge \u00eentregi peisaje de pe suprafa\u021ba planetei noastre\u201d, a declarat Dirk Notz, profesor de cercetare polar\u0103 la Universitatea din Hamburg \u0219i coautor al studiului.<\/p>\n<p>\u201eAr fi uimitor dac\u0103 am deveni mai con\u0219tien\u021bi de aceast\u0103 putere \u0219i de responsabilitatea pe care o implic\u0103, deoarece viitorul Arcticii este cu adev\u0103rat \u00een m\u00e2inile noastre.\u201d<\/p>\n<p>Printre coautorii lucr\u0103rii se num\u0103r\u0103 Jackie Dawson (Universitatea din Ottawa), Edward A.G. Schuur (Universitatea Northern Arizona), Dorthe Dahl-Jensen (Universitatea din Manitoba \u0219i Universitatea din Copenhaga) \u0219i C\u00e9line Giesse (Universitatea din Hamburg).<\/p>\n<p>Finan\u021barea studiului a venit din mai multe surse, cea mai important\u0103 parte provenind din Programul Canada 150 Research Chairs (grant C150 50296). De asemenea, au fost utilizate date \u0219i informa\u021bii din proiectele NSIDC \u201eSea Ice Today\u201d \u0219i \u201eIce Sheets Today\u201d.<\/p>\n<div class=\"code-block code-block-15\">\n<h4>Urm\u0103re\u0219te mai jos produc\u021biile video ale G4Media:<\/h4>\n<\/div>\n<\/div>\n<p> Source URL: https:\/\/www.g4media.ro\/studiu-arctica-ar-putea-deveni-de-nerecunoscut-pana-in-2100-cercetator-arctica-se-incalzeste-de-patru-ori-mai-rapid-decat-restul-planetei.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00cen 2024, temperatura medie global\u0103 a aerului a dep\u0103\u0219it pentru prima dat\u0103 1,5 grade Celsius peste nivelurile preindustriale, declan\u0219\u00e2nd fenomene meteorologice extreme, precum ploi record \u0219i inunda\u021bii \u00een de\u0219ertul Sahara, dar \u0219i valuri extreme de c\u0103ldur\u0103 \u00een timpul verii pe tot globul. \u00cens\u0103, \u00eenc\u0103lzirea global\u0103 nu se va opri la acest nivel, transmite ScienceDaily. Pe [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":503285,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[24],"class_list":["post-503284","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-politics","tag-g4media"],"_links":{"self":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/503284","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=503284"}],"version-history":[{"count":0,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/503284\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/media\/503285"}],"wp:attachment":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=503284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=503284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=503284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}