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Article
A new way to predict forecast skill
Forecast skill (Anomaly Correlated Coefficient, ACC) is a quantity to show the forecast quality of the products of numerical weather forecasting models. Predicting forecast skill, which is the foundation of en...
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Article
The change of North China climate in transient simulations using the IPCC SRES A2 and B2 scenarios with a coupled atmosphere-ocean general circulation model
This paper applies the newest emission scenarios of the sulfur and greenhouse gases, namely IPCC SRES A2 and B2 scenarios, to investigate the change of the North China climate with an atmosphere-ocean coupled ...
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Article
EA WM-Related Air-Sea-Land Interaction and the Asian Summer Monsoon Circulation
Based on the data analysis, this study further explores the characteristics of East Asian winter monsoon (hereafter, EA WM, for brevity) as well as the related air-sea-land system, and illustrates how and to w...
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Article
On the Formation and Maintenance of the Persistent Anomalies of Summertime Circulation over the Ural Mountains
The formation and maintenance of the persistent anomalies (PA hereafter) of summertime circulation over the Ural Mountains are studied, and a two-way interaction of transient eddies and time-mean flow that may...
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Article
An approach to extract effective information of monthly dynamical prediction—The use of ensemble method
The approach of getting useful information of monthly dynamical prediction from ensemble forecasts is studied. The extended range ensemble forecasts (8 members, the initial perturbations of the lagged average ...
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Article
The maintenance of the blocking over the ural mountains during the second Meiyu period in the summer of 1998
The 1998 summer—time floods at the Yangtze River basin of China, the severest in last 50 years or so, directly resulted from the abnormal extension of Meiyu (rainy season), which was related to a weak East Asi...
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Article
The Ocean-Atmosphere coupled regimes and east asian winter monsoon (EAWM) activity
In this paper, ocean-atmosphere coupled regimes are identified on the basis of SVD analysis, cluster analysis and composite analysis. The coupled regimes in cold seasons are identified as the clusters of the o...
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Article
Model study on the interannual variability of Asian winter monsoon and its influence
The interannual variation of Asian winter (NE) monsoon and its influence is studied using the long-term integration of Max-Plank Institute ECHAM3(T42 L19) model.
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Article
Internal dynamics of the generation of atmospheric teleconnection patterns
A preferred growing perturbation concept has been introduced into the dynamical study on the generation of atmospheric teleconnection patterns. It is shown that all the important teleconnection patterns observ...
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Article
A global spectral model and test of its performance
A brief introduction is given of a global spectral model, its dynamical framework and diabatic physical processes involved. A number of real forecasts are shown to illustrate the forecasting capability of the ...
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Article
Efficient anomalous forcings for linear problems
For linear forcing problems, a method is developed to provide a set of forcing modes which form a complete orthonormal basis for the finite-time response to steady forcing in the energy inner product space. Th...
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Article
A further study on an extended nonlinear ocean-atmosphere coupled hydrodynamic characteristic system and the abrupt feature of ENSO events
An extended ocean-atmosphere coupled characteristic system including thermodynamic physical processes in ocean mixed layer is formulated in order to describe SST explicitly and remove possible limitation of oc...
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Article
A numerical research on the influences of the diurnal variation of solar radiation on the medium-range weather processes
In this paper, we use a spectral model for the medium-range numerical weather forecast to discuss the impact of the diurnal variation of solar radiation on the medium-range weather processes. Under the tests o...
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Article
The role of topography and diabatic heating in the formation of dipole blocking in the atmosphere
In this paper, the nonlinear stationary waves forced by topography and diabatic heating are investigated. It is pointed out that (1) the nonlinear interaction of different stationary waves forced only by topog...
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Article
Algebraic rossby solitary wave and blocking in the atmosphere
In this paper, the atmosphere is divided into two regions which are governed by different equations. Furthermore, multiple-scale method is used to obtain the Benjamin-Ono equation satisfied by the nonlinear Ro...
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Article
Design and test of an improved scheme for global spectral model with reduced truncation error
An improved scheme of spectral model has been investigated in this paper. Through the introduction of a reference atmosphere, prognostic variables become smoother on the tilted sigma-surface over mountains or ...
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Article
Numerical experiments on the seasonal transition of general circulation over asia—part ii
In part II of this paper, the effects of diabatic heating and the Tibetan Plateau on the seasonal transition of the general circulation over Asia is investigated. It is shown that the effect of diffefential he...
