Amurka na iya fuskantar ƙarin digiri 2 na ma'aunin Celsius ko fiye da wasu fewan shekarun da suka gabata fiye da sauran duniyoyin, suna yin hakan a cikin ƙasa ta farko inda za'a lura da sakamakon canjin yanayi a da.
An bayyana wannan ta hanyar binciken da aka buga a cikin mujallar PLOS One, wanda Raymond Bradley da Ambarish Karmalkar, daga Jami'ar Amherst suka gudanar, waɗanda suka yi gargaɗin cewa jimillar jihohi 48 za su shawo kan shingen Celsius na digiri biyu kafin su kai 2050.
Kwaikwayon na’ura mai kwakwalwa, wacce tayi la’akari da yanayin zafin da aka rubuta a cikin watan Disambar bara, yayi hasashen hakan yankunan daga New York zuwa Boston, waɗanda suka fi yawan jama'a a yankin arewa maso gabashin ƙasar, zai iya yin rajistar ƙimar digiri 3 idan matsakaicin yanayin duniya ya ƙaru 2ºC. Digiri biyu a ma'aunin Celsius shine "shingen" da shugabannin suka yi alƙawarin wucewa ta hanyar sanya hannu kan yarjejeniyar ta Paris, amma idan aka ci gaba da hakan, da alama za a shawo kansu.
Taswirar yanayin yanayin duniya da masu bincike suka yi amfani da shi a matsayin ishara ta gano zafin rana fiye da kima a wasu yankuna na duniya, musamman a yankunan sanyi kamar Arctic. A can, an yi rajistar yanayin zafi na ƙarshe na sama da 20ºC sama da yadda aka saba. Kodayake ba su kaɗai ba ne waɗanda ke da lokacin ɗumi fiye da yadda za su kasance na al'ada.
Hoton - Ambarish V. Karmalkar da Raymond S. Bradley
Gabashin Amurka da Kanada, kudancin Australiya, da sassa daban-daban na China da Mongolia suma suna fuskantar ƙarancin yanayin zafi. Masu bincike sun yi gargadin cewa »banbancin yanayin zafi tsakanin yanayin kasa da tekuna zai jagoranci yankuna da dama na arewacin duniya don fuskantar dumamar da ta fi ta duniya gaba daya".
Kuna iya karanta cikakken nazarin a nan (Turanci ne).