SIMPLIFIED DYNAMICAL ANOMALY MODEL FOR LONG-RANGE NUMERICAL FORECASTS

Guo Yufu; Chao Jiping

doi:10.1007/BF03187614

Impact Factor: 5.8

Volume 1 Issue 1

Jan. 1984

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Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1984 > 1(1): 30-52

SIMPLIFIED DYNAMICAL ANOMALY MODEL FOR LONG-RANGE NUMERICAL FORECASTS

1.
InstituteofAtmosphericPhysics,AcaderaiaSinica,Beijing,InstituteofAtmosphericPhysics,AcaderaiaSinica,Beijing

doi: 10.1007/BF03187614

Abstract
References
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Abstract:
In this atmosphere-ocean-land coupled model, two basic ideas are developed, One is that the observational climate field is utilized and only the anomalous components are predicted. The other is that the transient Rossby wave is treated as the meteorological noise on the long-term variation that must be predicted in a climate forecasting. According to the latter, the transient Rossby wave can be filtered by omitting the partial derivative with respect to time in the atmospheric vorticity equation. But the time derivative term is still kept in the thermal equation for underlying ocean and land. With this assumption, the vorticity equation becomes time-independent, i.e. it is only a balance relationship between the anomaly geopotential height field and earth's surface heating field. This model is different from the usual GCM, so it may be called as the filtered anomaly model (FAM).A dozen examples of one month prediction are summarized in this report.
References

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Manuscript History

Manuscript received: 10 January 1984

Manuscript revised: 10 January 1984

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

SIMPLIFIED DYNAMICAL ANOMALY MODEL FOR LONG-RANGE NUMERICAL FORECASTS

1. InstituteofAtmosphericPhysics,AcaderaiaSinica,Beijing,InstituteofAtmosphericPhysics,AcaderaiaSinica,Beijing

Manuscript received: 1984-01-10
Manuscript revised: 1984-01-10

Abstract: In this atmosphere-ocean-land coupled model, two basic ideas are developed, One is that the observational climate field is utilized and only the anomalous components are predicted. The other is that the transient Rossby wave is treated as the meteorological noise on the long-term variation that must be predicted in a climate forecasting. According to the latter, the transient Rossby wave can be filtered by omitting the partial derivative with respect to time in the atmospheric vorticity equation. But the time derivative term is still kept in the thermal equation for underlying ocean and land. With this assumption, the vorticity equation becomes time-independent, i.e. it is only a balance relationship between the anomaly geopotential height field and earth's surface heating field. This model is different from the usual GCM, so it may be called as the filtered anomaly model (FAM).A dozen examples of one month prediction are summarized in this report.