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Methodology
CMATv1 CESM3dev Repository
Created: Tue Jan 20 10:08:30 2026
CMAT Version 1: NetCDF output

CMAT 1.0 CESM3dev CESM3dev_276pi: vs CESM2_1:
(Overall: 0.75-A; Energy: 0.77-A; Water: 0.65-A; Dynamics: 0.83-B)



Summary Comments
NotesFlags vs ObsImprovements (vs CESM2_1)Degradations (vs CESM2_1)
CESM3dev 0-700m Ocean Drifting Cold
NHM-SHM FSNT too small.
see also SWCF, ALBDS
OM-LM LHFLX too small.

 FSNT PCor-ENSO improves.
see also SWCF, ALBDS

FLNT PCor-ENSO degrades.
see also LWCF, TREFHT, TMQ
SWCF PCor-ENSO degrades.
see also ALBDS
LWCF PCor-ENSO degrades.
PR PCor-AM degrades.
PR PCor-ENSO degrades.
LHFLX PCor-ENSO degrades.
EP PCor-ENSO degrades.
Z500 PCor-ENSO degrades.
RELHUM992 PCor-ENSO degrades.
OMEGA500 PCor-ENSO degrades.
U10 PCor-ENSO degrades.
PSL PCor-ENSO degrades.

Select Timeseries
Global: TREFHT, RT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
NH:TREFHT, RT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
SH: TREFHT, RT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
Ocean: TREFHT, RT, FSNT, FLNT, SWCF, LWCF, P, CLDTOT, CLDLOW, CLDHGH, TMQ
Land: TREFHT, RT, FSNT, FLNT, SWCF, LWCF, P, CLDTOT, CLDLOW, CLDHGH, TMQ
Arctic(60N/90N): TREFHT, RT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
NH Mid(30N/60N): TREFHT, RT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
Tropics(30/30): TREFHT, RT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
Ocean(30/30): TREFHT, RT, FSNT, FLNT, SWCF, LWCF, P, CLDTOT, CLDLOW, CLDHGH, TMQ
Land(30/30): TREFHT, RT, FSNT, FLNT, SWCF, LWCF, P, CLDTOT, CLDLOW, CLDHGH, TMQ
SH Mid(30S/60S): TREFHT, RT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
SH Ant.(60S/90S): TREFHT, RT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
Global (by LME member1): TREFHT, FSNT, FLNT, SWCF, LWCF, OHC 0-300m, OHC 0-700m, OHC 0-2000, P, CLDTOT, CLDLOW, CLDHGH, TMQ
Ocean Drift: Summary By Basin Nino3.4: TS Forcing Est.FSNTOAC 30/30 Ocean


Lat/Lon Maps
FSNT 0.81 Annual 0.99JJA-DJF 0.99ENSO Tele 0.43DJF 0.99MAM 0.99JJA 0.99SON 0.99
FLNT 0.89 Annual 0.98JJA-DJF 0.97ENSO Tele 0.72DJF 0.97MAM 0.96JJA 0.98SON 0.97
SWCF 0.77 Annual 0.89JJA-DJF 0.95ENSO Tele 0.46DJF 0.94MAM 0.88JJA 0.91SON 0.89
LWCF 0.85 Annual 0.91JJA-DJF 0.93ENSO Tele 0.71DJF 0.91MAM 0.84JJA 0.92SON 0.89
FS 0.55 Annual 0.63JJA-DJF 0.96ENSO Tele 0.06DJF 0.90MAM 0.77JJA 0.89SON 0.77
RTFS 0.78 Annual 0.93JJA-DJF 0.93ENSO Tele 0.47DJF 0.93MAM 0.90JJA 0.92SON 0.91
Key Water VariablesScored/GradedUnscored
PR 0.74Annual 0.85JJA-DJF 0.84ENSO Tele 0.53DJF 0.85MAM 0.84JJA 0.84SON 0.80
TMQ 0.93Annual 0.99JJA-DJF 0.98ENSO Tele 0.82DJF 0.99MAM 0.98JJA 0.99SON 0.99
LHFLX 0.81Annual 0.96JJA-DJF 0.91ENSO Tele 0.54DJF 0.96MAM 0.96JJA 0.95SON 0.95
EP 0.55Annual 0.57JJA-DJF 0.51ENSO Tele 0.56DJF 0.62MAM 0.55JJA 0.52SON 0.52
RELHUM992 0.60Annual 0.81JJA-DJF 0.65ENSO Tele 0.33DJF 0.78MAM 0.79JJA 0.75SON 0.82
Key Dynamics VariablesScored/GradedUnscored
PSL 0.86Annual 0.99JJA-DJF 0.96ENSO Tele 0.61DJF 0.99MAM 0.99JJA 0.98SON 0.99
U10 0.85Annual 0.96JJA-DJF 0.93ENSO Tele 0.66DJF 0.95MAM 0.96JJA 0.96SON 0.96
Z500 0.81Annual 0.94JJA-DJF 0.91ENSO Tele 0.56DJF 0.96MAM 0.93JJA 0.88SON 0.93
OMEGA500 0.64Annual 0.67JJA-DJF 0.73ENSO Tele 0.51DJF 0.67MAM 0.65JJA 0.72SON 0.66
RELHUM500 0.88Annual 0.95JJA-DJF 0.94ENSO Tele 0.74DJF 0.95MAM 0.95JJA 0.94SON 0.94
Other Variables (unscored)
SOLINAnnual 1.00JJA-DJF 1.00DNADJF 1.00MAM 1.00JJA 1.00SON 1.00
ALBEDOAnnual 0.91JJA-DJF 0.45ENSO Tele 0.42DJF 0.70MAM 0.92JJA 0.87SON 0.92
ALBDSAnnual 0.98JJA-DJF 0.91ENSO Tele 0.05DJF 0.96MAM 0.97JJA 0.96SON 0.97
RTAnnual 0.99JJA-DJF 0.99ENSO Tele 0.46DJF 0.99MAM 0.99JJA 0.99SON 0.99
FSDSAnnual 0.98JJA-DJF 0.99ENSO Tele 0.47DJF 0.98MAM 0.98JJA 0.98SON 0.97
FLDSAnnual 0.99JJA-DJF 0.98ENSO Tele 0.64DJF 0.99MAM 0.99JJA 0.98SON 0.99
FSNSAnnual 0.98JJA-DJF 0.99ENSO Tele 0.46DJF 0.98MAM 0.99JJA 0.98SON 0.98
FLNSAnnual 0.92JJA-DJF 0.89ENSO Tele 0.51DJF 0.90MAM 0.92JJA 0.91SON 0.91
SHFLXAnnual 0.90JJA-DJF 0.89ENSO Tele 0.31DJF 0.89MAM 0.89JJA 0.88SON 0.90
TREFHTAnnual 1.00JJA-DJF 0.99ENSO Tele 0.50DJF 0.99MAM 0.99JJA 0.99SON 0.99
TREFHTAAnnual -0.01JJA-DJF -0.62ENSO Tele 0.50DJF -0.63MAM -0.05JJA -0.59SON -0.46
NETCFAnnual 0.84JJA-DJF 0.96ENSO Tele 0.35DJF 0.94MAM 0.81JJA 0.90SON 0.88


Hovmollers
FSNTOCEANLANDLAND+OCEAN
FLNTOCEANLANDLAND+OCEAN
SWCFOCEANLANDLAND+OCEAN
LWCFOCEANLANDLAND+OCEAN
FSOCEANLANDLAND+OCEAN
PROCEANLANDLAND+OCEAN
TMQOCEANLANDLAND+OCEAN
SOLINOCEANLANDLAND+OCEAN
ALBEDOOCEANLANDLAND+OCEAN
ALBDSOCEANLANDLAND+OCEAN
RTOCEANLANDLAND+OCEAN
FSDSOCEANLANDLAND+OCEAN
FLDSOCEANLANDLAND+OCEAN
FSNSOCEANLANDLAND+OCEAN
FLNSOCEANLANDLAND+OCEAN
LHFLXOCEANLANDLAND+OCEAN
SHFLXOCEANLANDLAND+OCEAN
TREFHTOCEANLANDLAND+OCEAN
TREFHTAOCEANLANDLAND+OCEAN
EPOCEANLANDLAND+OCEAN
RTFSOCEANLANDLAND+OCEAN
Z500OCEANLANDLAND+OCEAN
RELHUM992OCEANLANDLAND+OCEAN
NETCFOCEANLANDLAND+OCEAN
OMEGA500OCEANLANDLAND+OCEAN
U10OCEANLANDLAND+OCEAN
PSLOCEANLANDLAND+OCEAN
RELHUM500OCEANLANDLAND+OCEAN