{"id":180408,"date":"2016-12-14T11:20:34","date_gmt":"2016-12-14T10:20:34","guid":{"rendered":"http:\/\/hudo.com\/si\/?p=180408"},"modified":"2016-12-14T11:20:34","modified_gmt":"2016-12-14T10:20:34","slug":"na-arktiki-rekordno-taljenje-ledu","status":"publish","type":"post","link":"https:\/\/hudo.com\/si\/aktualno\/na-arktiki-rekordno-taljenje-ledu\/","title":{"rendered":"Na Arktiki rekordno taljenje ledu"},"content":{"rendered":"<p>Poro\u010dilo, pri katerem je sodelovalo 61 znanstvenikov z vsega sveta, zajema obdobje od oktobra 2015 do leto\u0161njega septembra. Znanstveniki so v tem \u010dasu zabele\u017eili &#8220;najvi\u0161je temperature nad kopenskimi obmo\u010dji, odkar jih bele\u017eijo&#8221;, poro\u010da francoska tiskovna agencija AFP.<\/p>\n<p>&#8220;Redko smo videli tako jasne, mo\u010dne in izrazite signale stalnega segrevanja in posledic na okolje, ki se stopnjujejo, kot letos,&#8221; je sporo\u010dil direktor raziskovalnega programa NOAA Jeremy Mathis.<\/p>\n<p>Vzroki za dvig globalnih temperatur pa so od povi\u0161anja koncentracije toplogrednih plinov v ozra\u010dju do pojavov, kot je bil El Nino, ki se je sicer kon\u010dal sredi leta, a je okrepil posledice segrevanja oceanov, je navedla NOAA v poro\u010dilu.<\/p>\n<p>Arkti\u010dno obmo\u010dje se segreva dvakrat hitreje kot ostala obmo\u010dja na Zemlji, ki bodo sicer prav tako zabele\u017eila najtoplej\u0161e leto v zgodovini. Letna temperatura nad kopenskimi obmo\u010dji Arktike je bila v omenjenem obdobju za 3,5 stopinje Celzija vi\u0161ja kot leta 1900.<\/p>\n<p>Temperatura na povr\u0161ini morja je bila avgusta 2016 kar pet stopinj Celzija vi\u0161ja od povpre\u010dja v letih od 1982 do 2010. &#8220;O\u010ditno je, da je rekordna zamuda pri zamrzovanju morja letos jeseni povezana z nenavadno toplimi temperaturami zraka in povr\u0161ine morja,&#8221; ugotavlja poro\u010dilo in dodaja, da je tudi led, ki nastaja, tanj\u0161i in se la\u017eje tali.<\/p>\n<p>Znanstveniki so v dodatku poro\u010dila opozorili tudi, da je bilo obmo\u010dje pokritosti z ledom od sredine leto\u0161njega oktobra do konca novembra najmanj\u0161e, odkar so leta 1979 za\u010deli satelitska merjenja. Bilo je 28 odstotkov manj\u0161e od povpre\u010dja v oktobrih v letih od 1981 in 2010, \u0161e navaja poro\u010dilo.<\/p>\n<p>Vse manj je tudi ve\u010dletnega ledu, ki ostaja tudi preko poletja. Leta 1985 je bilo skoraj polovica &#8211; 45 odstotkov &#8211; ledu ve\u010dletnega. Zdaj ga je le \u0161e 22 odstotkov, medtem ko je ostalo zgolj nov led, ki se potem poleti stopi.<\/p>\n<p>Poro\u010dilo navaja tudi izgubo kopenskega ledu na Grenlandiji in drugod, ki se nadaljuje vse od za\u010detka merjenj leta 2002. Taljenje ledu na Grenlandiji se je letos tudi za\u010delo bolj zgodaj in je bilo blizu rekordnim vrednostim, ki so jih zabele\u017eili leta 2012.<\/p>\n<p>Rekordno nizka je bila tudi spomladanska pobeljenost s snegom na severnoameri\u0161ki Arktiki; maja je bilo prvi\u010d od za\u010detkov merjenj leta 1967 s snegom pokritih manj kot \u0161tiri milijone kvadratnih kilometrov.<\/p>\n<p>Taljenje ledu na kopnem na Arktiki in zmanj\u0161evanje ledu na morju pa \u0161e krepi absorpcijo son\u010dnih \u017earkov v morju, kar krepi tudi ob\u0161irno cvetenje alg. Tundra pa zdaj &#8220;izpu\u0161\u010da ve\u010d ogljika v ozra\u010dje, kot pa ga absorbira,&#8221; so \u0161e navedli v poro\u010dilu in opozorili, da bo imelo taljenje permafrosta, v katerem je ujetih veliko toplogrednih plinov, zlasti metana, &#8220;velike posledice na vreme in podnebje tako na Arktiki kot drugod po svetu&#8221;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Arktika v zadnjih letih do\u017eivlja temperaturne rekorde, ki povzro\u010dajo obse\u017eno taljenje ledu in pozno zamrzovanje, v pregledu stanja na Arktiki za leto 2016 ugotavljajo znanstveniki ameri\u0161ke Nacionalne uprave za oceane in atmosfero (NOAA).<\/p>\n","protected":false},"author":8,"featured_media":178658,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1179],"tags":[7108,3107,7331],"source":[4511],"supertag":[6103],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Na Arktiki rekordno taljenje ledu - Hudo Slovenija<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hudo.com\/si\/aktualno\/na-arktiki-rekordno-taljenje-ledu\/\" \/>\n<meta property=\"og:locale\" content=\"sl_SI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Na Arktiki rekordno taljenje ledu - Hudo Slovenija\" \/>\n<meta property=\"og:description\" content=\"Arktika v zadnjih letih do\u017eivlja temperaturne rekorde, ki povzro\u010dajo obse\u017eno taljenje ledu in pozno zamrzovanje, v pregledu stanja na Arktiki za leto 2016 ugotavljajo znanstveniki ameri\u0161ke Nacionalne uprave za oceane in atmosfero (NOAA).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hudo.com\/si\/aktualno\/na-arktiki-rekordno-taljenje-ledu\/\" \/>\n<meta property=\"og:site_name\" content=\"Hudo Slovenija\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/hudo.si\" \/>\n<meta property=\"article:published_time\" content=\"2016-12-14T10:20:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hudo.com\/si\/wp-content\/uploads\/sites\/2\/2016\/11\/profimedia-0113432340-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1250\" \/>\n\t<meta property=\"og:image:height\" content=\"936\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"M. 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