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System Configuration Information

These information can be changed if the corresponding operational model is modified.

GPC CPTEC

GPC CPTEC
When was the current long-range forecast system implemented? May 2020
Is it a coupled forecast system? No
Is it a Tier-2 forecast system? Yes. It is an atmospheric model withe presisted SSTs
Atmospheric model resolution T126L42
Ocean model (if applicable) NA
Source of atmospheric initial conditions ERA-5
Source of ocean initial conditions NA
If Tier-2, what is the source of SST predictions? Persisted SST anomaly from NCEP(Reynolds SST OI v2) of the previous month of lead 0
Hindcast period 1981-2010
Ensemble size for the hindcasts 10 ensemble members
How is the hindcast ensemble configured?  10 different atmospheric initial conditions(lagged approach using 10 daily initial conditions from ERA-5)
Ensemble size for the forecast 15 ensemble members
How is the forecast ensemble configured?  15 different atmospheric initial conditions(lagged approach usgin 15 daily initial conditions from ERA-5)
Length of forecasts 6 months, from lead 0 to 6
Data format Grib 1
What is the latest date predicted anomalies for the next month/season become available? Around the 15th of each calendar month
How are the forecast anomalies constructed? All individual forecast ensemble members and the corresponding climatology are provided for each forecast month, from lead 0 to 6, so that anomalies can be computed. 
URL where forecast are displayed http://clima1.cptec.inpe.br/gpc
Point of Contact Dr.Caio Coelho (caio.coelho@inpe.br)

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