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| Map | Forecast range | Parameter | Normal | ||
| Ensemble mean | first month, second month, third month, three months mean | Northern Hemisphere | 60N-60S and Asia | Northern Hemisphere | 60N-60S and Asia |
| Geopotential height and anomaly at 500hPa(Z500), Temperature and anomaly at 850hPa(T850), Sea level pressure and anomaly(PSEA) [Systematic error is removed.(Bias based on hindcast from 1991 to 2020.)] | Geopotential height and anomaly at 500hPa(Z500), Sea level pressure and anomaly(PSEA), Stream function and anomaly at 200hPa(PSI200) and 850hPa(PSI850), Velocity potential and anomaly at 200hPa(CHI200), Precipitation and anomaly(RAIN), Temperature and anomaly at 2m(TS), PSI850 anomaly and wind vector anomaly at 850hPa, Sea surface temperature and anomaly(SST) | Model normals based on hindcast from 1991 to 2020 | |||
| Spread | Geopotential height and anomaly at 500hPa(Z500), Temperature and anomaly at 850hPa(T850), Sea level pressure and anomaly(PSEA) | Geopotential height and anomaly at 500hPa(Z500), Sea level pressure and anomaly(PSEA), Stream function and anomaly at 200hPa(PSI200) and 850hPa(PSI850), Velocity potential and anomaly at 200hPa(CHI200), Precipitation and anomaly(RAIN), Temperature and anomaly at 2m(TS) | |||