Basic Propetries
Issue frequency
Monthly
Spatial coverage
Global
Resolution
Temporal resolution : Monthly mean
Spatial resolution: 2.5° x 2.5°
Ensemble size
20 members
Lead time
3 weeks
Output type
Images and GRIB-2
Variables
Surface (2m) Temperature anomaly (K)
200 and 500 hPa height anomaly (gpm)
Mean sea level Pressure anomaly (hPa)
850 hPa Temperature anomaly (K)
Total Precipitation anomaly (mm/day)
Sea Surface Temperature anomaly (K)
Hindcast information (SMIP2/HFP)
SMIP2/HFP Experiment
Experiment design
28-year integration (1979-2007)
4-month integration for each case
Ensemble member
20 ensemble members
Initial member
20 members: 3rd~7th day of each month (00, 06,12,18UTC)
Integration time
160 days
Initial condition
Atmosphere
NCEP/NCAR reanalysis (U,V,T,q,Ps)
Land surface
Climatology
Boundary condition
SST and sea ice
Predicted SST using dynamical and statistical prediction model
Etc.
Same as SMIP2
Verification Information
All data are verified using the Standard Verification System (SVS) for Long Rang Forecasts (LRF) defined in the WMO Manual on the Global Data-Processing System (attachment II.8).
Verification Results can be seen in WMO Lead Centre for the Long Range Forecast Verification System website (http://www.bom.gov.au/wmo/lrfvs)
Verifying Datasets
Variables
Climatology
Resolution
Period
500hPa, MSLP
850hPa Temperature
2m Temperature
NCEP-DOE2
2.5°×2.5°
1979~2007
Precipitation
CAMS-OPI
2.5°×2.5°
1979~2007
SST
ERSST
OISST
2.5°×2.5°
ERSST (1979-1981)
OISST (1982-2007)
Verification Level : Level 1 and Level 2
Level1
Variables
Domain
Diagnostic Forecast
Seasons
500hPa
Global
N.H (20°N~90°N)
Tropics (20°N~20°S)
S.H (20°S×90°S)
Bulk MSSS
12 rolling 3-month
MSLP
850hPa Temperature
2m Temperature
Precipitation anomaly
SST
60°N×60°S
Level2
Variables
Domain
Diagnostic Forecast
Seasons
500hPa
2.5°×2.5°
(Global)
MSSS
Anomaly Correlation
Amplitude error
Bias error
12 rolling 3-month
MSLP
850hPa Temperature
2m Temperature
Precipitation anomaly
SST
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