Are Bred Vectors The Same As Lyapunov Vectors

Are Bred Vectors The Same As Lyapunov Vectors
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繁殖向量与李亚普诺夫向量相同吗

DOI:
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发表时间:
2002
期刊:
影响因子:
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通讯作者:
M. Cai
M. Cai
中科院分区:
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文献类型:
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作者:
E. Kalnay;M. Corazza;M. Cai

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集合预报和数据同化的使用使大气在空间和时间上的局部可预报性的重要性变得明显(例如,Toth和Kalnay,1993年,Molteni和Palmer,1993年)。用于显示业务集合产品的“意大利面条”图和其他方法经常同时显示某些地区的可预报性高,而另一些地区的可预报性低。区域可预测性的损失是底层流动不稳定的指示,其中初始条件中的小误差(或模型中的缺陷)在有限时间内增长到大幅度。已经使用李雅普诺夫向量(例如,Alligood等,1996,Ott,1993,Kalnay,2001),奇异向量(例如,Lorenz,1965,Farrell,1988,Molteni和Palmer,1993),以及最近,用繁殖载体(例如,Szunyogh等人,1997,Cai等人,2001)。
The use of ensemble forecasting and data assimilation has made apparent the importance of local predictability properties of the atmosphere in space and in time (e.g., Toth and Kalnay, 1993, Molteni and Palmer, 1993). The “spaghetti” plots and other methods used to display operational ensemble products frequently show simultaneous high predictability in some areas and low predictability in others. The regional loss of predictability is an indication of the instability of the underlying flow, where small errors in the initial conditions (or imperfections in the model) grow to large amplitudes in finite times. The stability properties of evolving flows have been studied using Lyapunov vectors (e.g., Alligood et al, 1996, Ott, 1993, Kalnay, 2001), singular vectors (e.g., Lorenz, 1965, Farrell, 1988, Molteni and Palmer, 1993), and, more recently, with bred vectors (e.g., Szunyogh et al, 1997, Cai et al, 2001).