With that possibility in mind, the IPCC examined six different sets of computer - simulated scenarios ​ — ranging from unrestricted greenhouse - gas production to business as usual to severe restraint — ​ each producing different climatic and environmental results.
Seetõttu uuris IPCC kuut eri mudelite abil koostatud stsenaariumi alates kasvuhoonegaaside piiramatus koguses õhkupaiskamisest kuni nende range piiramiseni.