— e “­e’ve started a process l i t we can’t stop u so we miht as well eep emittin” s f e i s n …he maximum aerae lobal temperature is in part o p s e determined b­ atmospheric co2 ›and other reenhouse r asœ concentrations‚ ‹f other conditions includin the concentration of other atmospheric ases remain con„ stant risin co2 concentrations will lead to risin temperatures‚ — ¡” per cent of the co2 that reaches the atmosphere will persist there for ¬00 ­ears with up to 2” per cent remain„ in in the atmosphere for up to 10 000 ­ears — which is to sa­ warmin is permanent on timescales releant to humans‚ — ‹n order to halt warmin at an­ point humans would need to reduce net co2 emissions to ›er­ close toœ zero‚! ›see figure œ — Efforts to stabilize temperatures b­ reducin net human emissions to zero should be successful proided there are no mašor actie feedbacƒ loopsª these feedbacƒ loops become more liƒel­ at hiher temperatures‚@ 1 Šile­ 201— 2 £owe ¦ ¢ernie 201— ‘‘