Structure of characteristic Lyapunov vectors in spatiotemporal chaos

D Pazó, IG Szendro, JM López, MA Rodríguez - Physical Review E—Statistical …, 2008 - APS
We study Lyapunov vectors (LVs) corresponding to the largest Lyapunov exponents in
systems with spatiotemporal chaos. We focus on characteristic LVs and compare the results …

Spatio-temporal evolution of perturbations in ensembles initialized by bred, Lyapunov and singular vectors

D Pazó, MA Rodríguez, JM López - Tellus A: Dynamic Meteorology …, 2010 - Taylor & Francis
We study the evolution of finite perturbations in the Lorenz '96 model, a meteorological toy
model of the atmosphere. The initial perturbations are chosen to be aligned along different …

Logarithmic bred vectors in spatiotemporal chaos: Structure and growth

S Hallerberg, D Pazo, JM Lopez, MA Rodriguez - Physical Review E …, 2010 - APS
Bred vectors are a type of finite perturbation used in prediction studies of atmospheric
models that exhibit spatially extended chaos. We study the structure, spatial correlations …

On the problem of data assimilation by means of synchronization

IG Szendro, MA Rodríguez… - Journal of Geophysical …, 2009 - Wiley Online Library
The potential use of synchronization as a method for data assimilation is investigated in a
Lorenz96 model. Data representing the reality are obtained from a Lorenz96 model with …

Error Growth Patterns in Systems with Spatial Chaos:<? format?> From Coupled Map Lattices to Global Weather Models

C Primo, IG Szendro, MA Rodríguez, JM Gutiérrez - Physical review letters, 2007 - APS
Error growth in spatiotemporal chaotic systems is investigated by analyzing the interplay
between temporal and spatial dynamics. The spatial correlation and localization of relative …

Structure of characteristic Lyapunov vectors in anharmonic Hamiltonian lattices

M Romero-Bastida, D Pazó, JM López… - Physical Review E …, 2010 - APS
In this work we perform a detailed study of the scaling properties of Lyapunov vectors (LVs)
for two different one-dimensional Hamiltonian lattices: the Fermi-Pasta-Ulam and Φ 4 …

Tailored ensemble prediction systems: Application of seamless scale bred vectors

A Hermoso, V Homar, SJ Greybush… - Journal of the …, 2020 - jstage.jst.go.jp
Uncertainty in numerical weather forecasts arising from an imperfect knowledge of the initial
condition of the atmospheric system and the discrete modeling of physical processes is …

Dynamic scaling of bred vectors in spatially extended chaotic systems

C Primo, IG Szendro, MA Rodríguez… - Europhysics …, 2006 - iopscience.iop.org
We unfold a profound relationship between the dynamics of finite-size perturbations in
spatially extended chaotic systems and the universality class of Kardar-Parisi-Zhang (KPZ) …

On finite-size Lyapunov exponents in multiscale systems

L Mitchell, GA Gottwald - Chaos: An Interdisciplinary Journal of …, 2012 - pubs.aip.org
We study the effect of regime switches on finite size Lyapunov exponents (FSLEs) in
determining the error growth rates and predictability of multiscale systems. We consider a …

[HTML][HTML] Maximizing the statistical diversity of an ensemble of bred vectors by using the geometric norm

D Pazó, MA Rodríguez… - Journal of the Atmospheric …, 2011 - journals.ametsoc.org
It is shown that the choice of the norm has a great impact on the construction of ensembles
of bred vectors. The geometric norm maximizes (in comparison with other norms such as the …