Hoto - NASA
A cewar wani sabon binciken da aka buga a mujallar 'Canjin Yanayi', rashin bayanai kan yanayin zafin Arctic ya haifar da raguwar yanayin dumamar yanayi tsakanin 1998 da 2012. Masana kimiyya daga Jami'ar Alaska Faibanks (UAF), tare da sauran masana daga China, sun gina abin da ke farkon yanayin yanayin duniya.
A yin haka sun gano hakan yawan dumamar yanayi ya ci gaba da karuwa da digiri 0,112 Celsius a shekara goma maimakon raguwa zuwa digiri 0,05 a shekaru goma a wannan lokacin, kamar yadda aka zata a baya.
Ofungiyar masana kimiyya sun sake lissafa matsakaicin yanayin duniya tsakanin 1998 da 2012 kuma abin da suka gano ya zama abin ban mamaki da gaske: yankin Arctic yayi dumu dumu fiye da sauran duniyoyin a matsakaita. "Mun kiyasta wani sabon yanayin dumamar yanayi na Arctic a 0,659 digiri Celsius a cikin shekaru goma a wannan lokacin." Karatuttukan da suka gabata sun kammala cewa ɗumamar ta kasance digiri 0,130 a shekaru goma. An riga an san cewa yanki ne mai matukar rauni, amma wannan sabon rahoton ya nuna mana cewa ainihin halin da ake ciki ya fi muni.
Yawancin ƙididdigar yanzu suna amfani da bayanan duniya waɗanda ke wakiltar dogon lokaci, amma Arctic ba shi da hanyar sadarwa mai ƙarfi don tattara bayanan zazzabi. Saboda haka, masu binciken sun dogara da bayanan da Cibiyar Arctic Buoy ta Duniya ta tattara a Jami'ar Washington (Amurka), kuma sun gyara yanayin yanayin teku daga theasar National Oceanic da Gudanar da Yanayi (NOAA). don bayanan duniya.
Yankin Arctic ya kasance, kuma yanzu fiye da kowane lokaci, yankin da dole ne masu bincike su ci gaba da nazari, saboda idan an taba yarda cewa bai kai girman tasirin tasirin yanayin zafin duniya ba, a cewar masanin kimiyyar sararin samaniya Xiangdong Zhang, na UAF Cibiyar Nazarin Arctic Arctic, Arctic »yanki ne mai mahimmanci na lissafi kuma amsar tana shafan mu duka".
Don ƙarin koyo, danna a nan.