Are Bred Vectors The Same As Lyapunov Vectors
Are Bred Vectors The Same As Lyapunov Vectors
复制标题
繁殖向量与李亚普诺夫向量相同吗
DOI:
--
复制
发表时间:
2002
期刊:
影响因子:
--
通讯作者:
M. Cai
中科院分区:
文献类型:
--
作者:
E. Kalnay;M. Corazza;M. Cai
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).