I-United States inokufumana ukonyuka kwe-2 degrees Celsius okanye ngaphezulu kweminyaka embalwa ngaphambili kunayo yonke iplanethi, iyenza kwilizwe lokuqala apho iziphumo zotshintsho lwemozulu ziya kuqatshelwa ngaphambili.
Oku kutyhilwe luphando olupapashwe kwiphephancwadi i-PLOS One, olwenziwe nguRaymond Bradley kunye no-Ambarish Karmalkar, wase-University of Amherst, olumkisa ngelithi Amazwe angama-48 ewonke aya kuwoyisa umqobo wesibini we-Celsius ngaphambi kokufika ku-2050.
Ukulinganisa kweekhompyuter, okuthathele ingqalelo ubushushu obaburekhodwa ngenyanga kaDisemba kunyaka ophelileyo, kuqikelela oko iindawo ezisuka eNew York ziye eBoston, Yeyona ndawo inabantu abaninzi kumantla mpuma eli lizwe, Ungabhalisa amaxabiso ama-3 degrees ukuba ubushushu obuphakathi behlabathi bonyuke ngo-2ºC. Iidigri ezimbini zikaCelsius "ngumqobo" iinkokeli ezazithembisa ukuwudlulisa ngokusayina isiVumelwano saseParis, kodwa ukuba oku kuyaqhubeka, kungenzeka boyiswe.
Imephu yeqondo lobushushu lehlabathi abaye basebenzisa abaphandi njengereferensi bafumanisa ubushushu obugqithisileyo kwezinye iindawo zomhlaba, ngakumbi kwiindawo ezibandayo ezinje ngeArctic. Apho, ubushushu bokwindla bokugqibela obungaphezulu kwama-20ºC ngaphezulu kwesiqhelo babhaliswa. Nangona yayingengabo bodwa ababenexesha elifudumeleyo kunesiqhelo.
Umfanekiso-Ambarish V. Karmalkar kunye noRaymond S. Bradley
Impuma ye-United States neCanada, emazantsi e-Australia, kunye neendawo ezahlukeneyo zase China naseMongolia nazo zifumana ukonyuka okukhulu kumaqondo obushushu. Abaphandi balumkisa ukuba »Umahluko kumaqondo obushushu phakathi kobunzima bomhlaba kunye neelwandle uya kukhokelela kwimimandla emininzi ye-hemisphere esemantla ukuze ufumane amaqondo obushushu amakhulu kunaleyo iplanethi iphela».
Ungasifunda sonke isifundo apha (Kungenxa yesiNgesi).