Kankunan Arctic yana narkewa a lokacin sanyi ma

Narke a cikin Arctic

Kodayake yana iya zama mai ban sha'awa, Kankunan Arctic na ci gaba da narkewa a lokacin sanyi, kamar yadda sabon bayanan watan Janairu ya bayyana daga National Snow and Ice Center (NSIC). Wannan watan ya ƙare tare da kankara miliyan 13,06 na murabba'in kilomita, 1,36 miliyan km2 ƙasa da lokacin tuntuba daga 1981 zuwa 2010.

Yanayin zafi a wannan yanki na duniya yana da tsananin zafi don kankara ta riƙe, don haka ana sa ran barin yankin Arctic ba tare da dusar dusar sa ba a nan gaba.

Tekun arctic ya ɗauki zafin jiki aƙalla aƙalla digiri 3 a ma'aunin Celsius sama da matsakaici. A cikin Tekun Kara da Barents wannan haɓakar ya kai 9ºC. A gefen Pacific, ma'aunin zafi da sanyio karanta game 5ºC fiye da matsakaita; a gefe guda, a cikin Siberia zafin jiki ya kai 4ºC ƙasa da yadda yake.

Wannan canjin ya samo asali ne sakamakon yanayin kewayawar iska wanda ke dauke da iska daga kudu, wanda yafi dumi, da kuma sakin zafi a cikin sararin samaniya daga yankunan ruwan budewa. Bugu da ƙari, matsin lamba na teku ya fi yadda aka saba a tsakiyar Arctic, don haka iska mai zafi daga Eurasia za a iya canjawa zuwa wannan yankin Arctic.

Arctic narkewa

Hoton - NSIDC.org

Idan ba komai ya canza matsakaicin zafin jiki ana tsammanin tashi da digiri 4-5 ta tsakiyar karni, wanda zai wakilci sau biyu abin da ake tsammani ya karu a arewacin duniya baki daya. Game da kankara kuwa, kusan tana iya bacewa gaba daya, tare da ragowar kasa da murabba'in kilomita miliyan 1, duk lokacin bazara daga shekara ta 2030, wanda tabbas kuma cikin rashin sa'a yana nufin bacewar belar.

Don ƙarin bayani, muna ba da shawarar yin Latsa nan.


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