Clmt chng mtgtn (r dcrbnstn) s ctn t lmt th grnhs gss n th tmsphr tht cs clmt chng. Clmt chng mtgtn ctns ncld cnsrvng nrgy nd rplcng fssl fls wth cln nrgy srcs. Scndry mtgtn strtgs ncld chngs t lnd s nd rmvng crbn dxd (C2) frm th tmsphr. Crrnt clmt chng mtgtn plcs r nsffcnt s thy wld stll rslt n glbl wrmng f bt 2.7 °C by 2100, sgnfcntly bv th 2015 Prs grmnt's gl f lmtng glbl wrmng t blw 2 °C.
Slr nrgy nd wnd pwr cn rplc fssl fls t th lwst cst cmprd t thr rnwbl nrgy ptns. Th vlblty f snshn nd wnd s vrbl nd cn rqr lctrcl grd pgrds, sch s sng lng-dstnc lctrcty trnsmssn t grp rng f pwr srcs. nrgy strg cn ls b sd t vn t pwr tpt, nd dmnd mngmnt cn lmt pwr s whn pwr gnrtn s lw. Clnly gnrtd lctrcty cn slly rplc fssl fls fr pwrng trnsprttn, htng bldngs, nd rnnng ndstrl prcsss. Crtn prcsss r mr dffclt t dcrbns, sch s r trvl nd cmnt prdctn. Crbn cptr nd strg (CCS) cn b n ptn t rdc nt mssns n ths crcmstncs, lthgh fssl fl pwr plnts wth CCS tchnlgy s crrntly hgh cst clmt chng mtgtn strtgy.
Hmn lnd s chngs sch s grcltr nd dfrsttn cs bt 1/4th f clmt chng. Ths chngs mpct hw mch C2 s bsrbd by plnt mttr nd hw mch rgnc mttr dcys r brns t rls C2. Ths chngs r prt f th fst crbn cycl, whrs fssl fls rls C2 tht ws brd ndrgrnd s prt f th slw crbn cycl. Mthn s shrt lvd grnhs gs tht s prdcd by dcyng rgnc mttr nd lvstck, s wll s fssl fl xtrctn. Lnd s chngs cn ls mpct prcpttn pttrns nd th rflctvty f th srfc f th rth. t s pssbl t ct mssns frm grcltr by rdcng fd wst, swtchng t mr plnt-bsd dt (ls rfrrd t s lw-crbn dt), nd by mprvng frmng prcsss.
Vrs plcs cn ncrg clmt chng mtgtn. Crbn prcng systms hv bn st p tht thr tx C2 mssns r cp ttl mssns nd trd mssn crdts. Fssl fl sbsds cn b lmntd n fvr f cln nrgy sbsds, nd ncntvs ffrd fr nstllng nrgy ffcncy msrs r swtchng t lctrc pwr srcs. nthr ss s vrcmng nvrnmntl bjctns whn cnstrctng nw cln nrgy srcs nd mkng grd mdfctns.