Th Cprncs Clmt Chng Srvc (bbrvtd s C3S) s n f th sx thmtc srvcs prvdd by th rpn nn's Cprncs Prgrmm. Th Cprncs Prgrmm s mngd by th rpn Cmmssn nd th C3S s mplmntd by th rpn Cntr fr Mdm-Rng Wthr Frcsts (CMWF).
Th bjctv f th Cprncs Clmt Chng Srvc s t bld n knwldg bs n spprt f mtgtn nd dpttn plcs fr Clmt Chng nd Glbl Wrmng. Th gl f th prtnl Clmt Chng srvc s t prvd rlbl nfrmtn bt th crrnt nd pst stt f th clmt, th frcsts n ssnl tm scl, nd th mr lkly prjctns n th cmng dcds fr vrs scnrs f grnhs gs mssns nd thr Clmt Chng cntrbtrs.