{"id":6866,"date":"2013-12-29T15:46:39","date_gmt":"2013-12-29T13:46:39","guid":{"rendered":"http:\/\/politeknik.org.tr\/\/?p=6866"},"modified":"2019-01-28T22:00:19","modified_gmt":"2019-01-28T19:00:19","slug":"sera-gazlari-rekor-seviyede","status":"publish","type":"post","link":"https:\/\/eonmeet.com\/pol\/sera-gazlari-rekor-seviyede\/","title":{"rendered":"Sera Gazlar\u0131 ‘Rekor Seviyede’"},"content":{"rendered":"

D\u00fcnya Meteoroloji \u00d6rg\u00fct\u00fc WMO’nun verilerine g\u00f6re, atmosferdeki k\u00fcresel \u0131s\u0131nmaya yol a\u00e7an sera gazlar\u0131n\u0131n oran\u0131 ge\u00e7en y\u0131l rekor seviyeye y\u00fckseldi.<\/strong><\/p>\n

\u00d6rg\u00fct atmosferdeki karbondioksit oran\u0131n\u0131n ge\u00e7en y\u0131l, son 10 y\u0131ldaki ortalamadan daha h\u0131zl\u0131 y\u00fckseldi\u011fini belirtti.<\/p>\n

Metan ve Diazotoksit (N2O) oranlar\u0131n\u0131n da rekor k\u0131rd\u0131\u011f\u0131n\u0131 a\u00e7\u0131klad\u0131.<\/p>\n

WMO karbondioksit ve di\u011fer gazlar\u0131n atmosferdeki art\u0131\u015f\u0131 nedeniyle, bu gazlar\u0131n k\u00fcresel \u0131s\u0131nmaya yol a\u00e7an etkisi 1990’dan bu yana \u00fc\u00e7te bir oran\u0131nda y\u00fckseldi.<\/p>\n

WMO’nun y\u0131ll\u0131k b\u00fcltenlerinde atmosferdeki sera gazlar\u0131 \u00f6l\u00e7\u00fcl\u00fcyor. Yery\u00fcz\u00fcndeki gaz oranlar\u0131na bak\u0131lm\u0131yor.<\/p>\n

Karbondioksit \u00f6rg\u00fct\u00fcn izledi\u011fi ba\u015fl\u0131ca sera gazlar\u0131ndan, ancak insan faaliyetlerinden kaynaklanan karbondioksitin sadece yar\u0131s\u0131 atmosfere \u00e7\u0131k\u0131yor, geriye kalan k\u0131sm\u0131 bitkiler, a\u011fa\u00e7lar, toprak ve okyanuslar taraf\u0131ndan emiliyor.<\/p>\n

Sanayi devriminin ba\u015flad\u0131\u011f\u0131 1750’den bu yana atmosferdeki karbondioksit oranlar\u0131 y\u00fczde 141 artt\u0131.<\/p>\n

WMO’nun verilerine g\u00f6re, atmosferdeki karbondioksit oran\u0131 ge\u00e7en y\u0131l 2.2 birim artarak, bir milyonda 393.1 birime \u00e7\u0131kt\u0131.<\/p>\n

‘Do\u011fal denge bozuluyor’<\/p>\n

WMO Genel Sekreteri Michel Jarraud, ‘Bu veriler bir kez daha insan faaliyetlerinden kaynakl\u0131 s\u0131cakl\u0131k depolayan gazlar\u0131n, atmosferimizin do\u011fal dengesini bozdu\u011funun ve iklim de\u011fi\u015fikli\u011finin \u00f6nemli nedenlerinden biri oldu\u011funun alt\u0131n\u0131 \u00e7iziyor’ dedi.<\/p>\n

G\u00fcnl\u00fck \u00f6l\u00e7\u00fcmlerdeki karbondioksit oran\u0131 ge\u00e7en May\u0131s ay\u0131nda sembolik de\u011fer olan milyonda 400 birimi a\u015fm\u0131\u015ft\u0131<\/p>\n

400 birim seviyesinin ge\u00e7ilmesi, ortalama s\u0131cakl\u0131klardaki art\u0131\u015f\u0131n tehlikeli seviyelere ula\u015fmas\u0131 i\u00e7in kritik e\u015fi\u011fin a\u015f\u0131lmas\u0131 anlam\u0131na geliyor.<\/p>\n

Ancak WMO’ya g\u00f6re k\u00fcresel ortalama \u00f6l\u00e7\u00fcmlerde 400 birim seviyesi 2015 ya da 2016’da a\u015f\u0131lacak.<\/p>\n

Atmosferdeki metan seviyesi de ge\u00e7en y\u0131l milyarda 1,819 birimle rekor k\u0131rd\u0131.<\/p>\n

Ama WMO’nun raporunda metan seviyesindeki art\u0131\u015f\u0131n, besicilik ve denizin doldurulmas\u0131 gibi insan faaliyetleri ya da batakl\u0131klar gibi do\u011fal metan kaynaklar\u0131yla a\u00e7\u0131klanamayaca\u011f\u0131 belirtildi.<\/p>\n

\u00d6rg\u00fct art\u0131\u015f\u0131n tropikal b\u00f6lgeler ve kuzey yar\u0131mk\u00fcrenin orta enlemlerdeki b\u00f6lgelerinden kaynakland\u0131\u011f\u0131n\u0131 bildirdi.<\/p>\n

Kuzey Kutup b\u00f6lgesindeki erimeden kaynaklanan metan gaz\u0131 uzun s\u00fcredir kayg\u0131 yarat\u0131yordu.<\/p>\n

WMO Diazotoksit oran\u0131n\u0131n da artt\u0131\u011f\u0131n\u0131, ge\u00e7en y\u0131l milyarda 325,1 birime \u00e7\u0131karak sanayi devrimi \u00f6ncesi seviyeye k\u0131yasla y\u00fczde 120 y\u00fckseldi\u011fini belirtti.<\/p>\n

Diazotoksit konsantrasyonlar\u0131 karbondioksite k\u0131yasla \u00e7ok k\u00fc\u00e7\u00fck, ancak 298 kat daha fazla s\u0131cakl\u0131k tutuyor ve ozon tabakas\u0131na zarar veriyor.<\/p>\n

Ge\u00e7ti\u011fimiz g\u00fcnlerde yay\u0131mlanan ara\u015ft\u0131rmalar sera gaz\u0131 sal\u0131m\u0131ndaki art\u0131\u015f h\u0131z\u0131n\u0131n yava\u015flad\u0131\u011f\u0131n\u0131 g\u00f6stermi\u015fti. Ancak s\u00f6zkonusu gazlar\u0131n oran\u0131 yine de art\u0131yor ve iklim \u00fczerinde y\u00fczlerce y\u0131l s\u00fcrebilecek etkileri olacak.<\/p>\n

Uzmanlar yeni verilerin k\u00fcresel \u0131s\u0131nman\u0131n s\u0131cakl\u0131k art\u0131\u015flar\u0131ndaki son 14 y\u0131ll\u0131k art\u0131\u015ftan sonra, daha b\u00fcy\u00fck bir g\u00fc\u00e7le geri d\u00f6nece\u011fine inan\u0131yor.<\/p>\n

Leeds \u00dcniversitesi’nden Profes\u00f6r Piers Foster, ‘Bu veriler sera gazlar\u0131n\u0131n iklimi her ge\u00e7en y\u0131l daha da s\u0131cakla\u015ft\u0131rd\u0131\u011f\u0131n\u0131 g\u00f6steriyor. Son on y\u0131ld\u0131r bu ek s\u0131cakl\u0131\u011f\u0131 okyanuslar artt\u0131. Bu sayede yery\u00fcz\u00fc s\u0131cakl\u0131klar\u0131 yava\u015f artt\u0131. Ama bunun b\u00f6yle s\u00fcrmesini beklemeyin. Ek s\u0131cakl\u0131k sonunda gelip bize zarar verecek. Yani gelecekte keskin bir s\u0131cakl\u0131k art\u0131\u015f\u0131 bekleyin’ dedi.
\nKaynak: BBC Turkce<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"D\u00fcnya Meteoroloji \u00d6rg\u00fct\u00fc WMO’nun verilerine g\u00f6re, atmosferdeki k\u00fcresel \u0131s\u0131nmaya yol a\u00e7an sera…\n","protected":false},"author":2,"featured_media":40571,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[4703],"tags":[],"class_list":{"0":"post-6866","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-kent-ve-doga"},"acf":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/posts\/6866","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/comments?post=6866"}],"version-history":[{"count":0,"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/posts\/6866\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/media\/40571"}],"wp:attachment":[{"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/media?parent=6866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/categories?post=6866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eonmeet.com\/pol\/wp-json\/wp\/v2\/tags?post=6866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}