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Methodology
CMATv1 CESM3dev Repository
Created: Tue Jan 20 10:46:14 2026
CMAT Version 1: NetCDF output

CMAT 1.0 CESM3dev CESM3dev_278pi: vs CESM2_1:
(Overall: 0.76-A; Energy: 0.74-B; Water: 0.65-A; Dynamics: 0.88-A)



Summary Comments
NotesFlags vs ObsImprovements (vs CESM2_1)Degradations (vs CESM2_1)
CESM3dev 0-2000m Ocean Drifting Cold
0-700m Ocean Drifting Cold
NHM-SHM FSNT too small.
see also SWCF, ALBDS
OM-LM FSNT too large.
see also SWCF, ALBDS
NHM-SHM FLNT too small.
see also LWCF, TREFHT, TMQ
OM-LM SWCF too large.
see also ALBDS

 FSNT PCor-ENSO improves.
see also SWCF, ALBDS
RELHUM992 PCor-AC improves.

FLNT PCor-ENSO degrades.
see also LWCF, TREFHT, TMQ
SWCF PCor-ENSO degrades.
see also ALBDS
LWCF PCor-ENSO degrades.
PR PCor-ENSO degrades.
TMQ PCor-ENSO degrades.
LHFLX PCor-ENSO degrades.
EP PCor-ENSO degrades.
RTFS 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 0.79 Annual 0.99JJA-DJF 1.00ENSO Tele 0.39DJF 0.99MAM 0.99JJA 0.99SON 0.99
FLNT 0.82 Annual 0.98JJA-DJF 0.96ENSO Tele 0.53DJF 0.97MAM 0.96JJA 0.98SON 0.96
SWCF 0.75 Annual 0.87JJA-DJF 0.96ENSO Tele 0.41DJF 0.94MAM 0.87JJA 0.89SON 0.88
LWCF 0.78 Annual 0.90JJA-DJF 0.91ENSO Tele 0.52DJF 0.90MAM 0.81JJA 0.91SON 0.86
FS 0.55 Annual 0.64JJA-DJF 0.96ENSO Tele 0.06DJF 0.89MAM 0.77JJA 0.89SON 0.77
RTFS 0.75 Annual 0.93JJA-DJF 0.92ENSO Tele 0.41DJF 0.92MAM 0.90JJA 0.92SON 0.91
Key Water VariablesScored/GradedUnscored
PR 0.74Annual 0.87JJA-DJF 0.84ENSO Tele 0.51DJF 0.84MAM 0.85JJA 0.86SON 0.82
TMQ 0.90Annual 0.99JJA-DJF 0.97ENSO Tele 0.75DJF 0.98MAM 0.99JJA 0.98SON 0.98
LHFLX 0.81Annual 0.97JJA-DJF 0.91ENSO Tele 0.55DJF 0.95MAM 0.96JJA 0.96SON 0.96
EP 0.54Annual 0.58JJA-DJF 0.51ENSO Tele 0.52DJF 0.60MAM 0.58JJA 0.52SON 0.49
RELHUM992 0.62Annual 0.85JJA-DJF 0.72ENSO Tele 0.27DJF 0.83MAM 0.84JJA 0.81SON 0.86
Key Dynamics VariablesScored/GradedUnscored
PSL 0.89Annual 0.99JJA-DJF 0.95ENSO Tele 0.73DJF 0.98MAM 0.98JJA 0.98SON 0.99
U10 0.84Annual 0.96JJA-DJF 0.92ENSO Tele 0.63DJF 0.94MAM 0.96JJA 0.96SON 0.96
Z500 0.87Annual 0.95JJA-DJF 0.92ENSO Tele 0.73DJF 0.96MAM 0.94JJA 0.92SON 0.91
OMEGA500 0.61Annual 0.66JJA-DJF 0.73ENSO Tele 0.45DJF 0.67MAM 0.66JJA 0.71SON 0.64
RELHUM500 0.83Annual 0.95JJA-DJF 0.93ENSO Tele 0.62DJF 0.95MAM 0.94JJA 0.94SON 0.93
Other Variables (unscored)
SOLINAnnual 1.00JJA-DJF 1.00DNADJF 1.00MAM 1.00JJA 1.00SON 1.00
ALBEDOAnnual 0.93JJA-DJF 0.45ENSO Tele 0.40DJF 0.71MAM 0.93JJA 0.88SON 0.93
ALBDSAnnual 0.97JJA-DJF 0.90ENSO Tele 0.19DJF 0.96MAM 0.97JJA 0.95SON 0.96
RTAnnual 0.99JJA-DJF 1.00ENSO Tele 0.33DJF 0.99MAM 0.99JJA 0.99SON 0.99
FSDSAnnual 0.97JJA-DJF 0.99ENSO Tele 0.42DJF 0.99MAM 0.98JJA 0.98SON 0.98
FLDSAnnual 0.99JJA-DJF 0.97ENSO Tele 0.65DJF 0.99MAM 0.99JJA 0.98SON 0.99
FSNSAnnual 0.98JJA-DJF 0.99ENSO Tele 0.42DJF 0.99MAM 0.98JJA 0.98SON 0.98
FLNSAnnual 0.92JJA-DJF 0.88ENSO Tele 0.43DJF 0.91MAM 0.92JJA 0.90SON 0.92
SHFLXAnnual 0.88JJA-DJF 0.88ENSO Tele 0.26DJF 0.88MAM 0.87JJA 0.87SON 0.89
TREFHTAnnual 1.00JJA-DJF 0.99ENSO Tele 0.58DJF 0.99MAM 0.99JJA 0.99SON 0.99
TREFHTAAnnual 0.00JJA-DJF -0.63ENSO Tele 0.58DJF -0.64MAM -0.04JJA -0.60SON -0.47
NETCFAnnual 0.82JJA-DJF 0.96ENSO Tele 0.28DJF 0.94MAM 0.81JJA 0.89SON 0.87


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