Wannan ya bayyana ne daga wata kungiyar kasa da kasa da ta kunshi masu bincike shida daga kasashen Norway, Ingila da Sweden, wadanda suka wallafa wani bincike a cikin mujallar kimiyya ta 'Canjin Yanayin Yanayi'. Domin mu sami fahimtar adadin permafrost da zai ɓace tare da kowane mataki na ɗumamar yanayi, ya kamata mu sani cewa yanki ne mafi girma fiye da Indiya.
Permafrost, wannan layin kasar wanda ya daskarewa na akalla shekaru biyu, wanda ya mamaye kusan kilomita murabba'in miliyan 15 na fadin duniya, yana kara rauni sakamakon dumamar yanayi.
Ana adana yawancin carbon a cikin permafrost, wanda shine babbar matsala a yau. Yayin da duniya ke dumama, wannan kankarar tana narkewa, yana haifar da kwayoyin halittar da suka makale a ciki ya fara ruɓewa. A yin haka, ana fitar da iskar gas mai zafi kamar su carbon dioxide da methane, biyu daga cikin manyan gas da ke haifar da ƙaruwar yanayin zafi.
Don cimma wannan shawarar, Masu binciken sun yi nazarin yadda wannan takardar kankara take canzawa a duk fadin kasa da alakarta da yanayin zafin jiki. Daga nan suka bincika abin da zai iya faruwa idan yanayin zafi ya karu kuma, ta amfani da wannan bayanan, sun ƙirƙira taswirar rarraba permafrost. Don haka sun sami damar yin lissafin adadin permafrost da zai yi asara idan za a iya hana zafin duniya ɗaga sama da digiri 2.
Godiya ga wannan binciken Masana kimiyya sun iya gano cewa permafrost yana da saukin yanayin duniya fiye da yadda ake tsammani: daidaita yanayin a 2ºC sama da matakan masana'antu kafin lokacin zai iya narkar da sama da kashi 40% na wuraren da yake rufewa yanzu.. Idan wannan ya faru, kusan mutane miliyan 35 da ke zaune a waɗannan yankuna dole ne su ɗauki sabbin matakan daidaitawa, saboda hanyoyi da gine-gine na iya rushewa.