Login Sign up Sitemap Contact us
top

System Configuration Information

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

GPC Tokyo

GPC Tokyo
When was the current long-range forecast system implemented? System name: JMA/MRI-CPS3 
Implemented: February 2022
Is it a coupled forecast system? Yes
Is it a Tier-2 forecast system? No
Atmospheric model resolution TL319 (approx. 55km), 100 vertical layers
Ocean model (if applicable) 0.25ºx0.25º on a tripolar grid, 60 vertical layers
Source of atmospheric initial conditions Operational forecast: JMA’s Global Analysis (Hybrid LETKF/4DVAR system)
Hindcasts: JRA-3Q
Source of ocean initial conditions JMA’s MOVE/MRI.COM-G3 (Ocean 4DVAR system)
If Tier-2, what is the source of SST predictions? N/A
Hindcast period Dec1990-Dec2020
Ensemble size for the hindcasts 10 (5 members with 15-day Lagged Average Forecast)
How is the hindcast ensemble configured? Atmosphere: BGM and SPPT, Ocean: Ensemble perturbations approximating analysis error covariances using minimization histories
Ensemble size for the forecast 5 per day
How is the forecast ensemble configured? Atmosphere: BGM and SPPT, Ocean: Ensemble perturbations approximating analysis error covariance using minimization histories
Length of forecasts Up to 7 months
Data format GRIB 2
What is the latest date predicted anomalies for the next month/season become available? 5 member ensemble is available everyday
How are the forecast anomalies constructed? Calculate anomalies against daily normal baseline data sampled from 30-year hindcast data with linear interpolation of nearest (before/after) 2 days
URL where forecast are displayed http://ds.data.jma.go.jp/tcc/tcc/products/model/index.html
Point of Contact Mr. Takuya Komori (komori@met.kishou.go.jp)
KMA logo