Structure of characteristic Lyapunov vectors in spatiotemporal chaos
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 …
systems with spatiotemporal chaos. We focus on characteristic LVs and compare the results …
Initiation of ensemble data assimilation
M Zupanski, SJ Fletcher, IM Navon… - Tellus A: Dynamic …, 2006 - Taylor & Francis
The specification of the initial ensemble for ensemble data assimilation is addressed. The
presented work examines the impact of ensemble initiation in the Maximum Likelihood …
presented work examines the impact of ensemble initiation in the Maximum Likelihood …
Spatiotemporal structure of Lyapunov vectors in chaotic coupled-map lattices
The spatiotemporal dynamics of Lyapunov vectors (LVs) in spatially extended chaotic
systems is studied by means of coupled-map lattices. We determine intrinsic length scales …
systems is studied by means of coupled-map lattices. We determine intrinsic length scales …
Warped DGP model in warm intermediate inflation with a general dissipative coefficient in light of BICEP2 and Planck results
R Herrera, N Videla, M Olivares - Physical Review D, 2014 - APS
A warm inflationary universe scenario on a warped Dvali-Gabadadze-Porrati brane during
intermediate inflation is studied. We consider a general form for the dissipative coefficient Γ …
intermediate inflation is studied. We consider a general form for the dissipative coefficient Γ …
Spatio-temporal evolution of perturbations in ensembles initialized by bred, Lyapunov and singular vectors
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 …
model of the atmosphere. The initial perturbations are chosen to be aligned along different …
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 …
Lorenz96 model. Data representing the reality are obtained from a Lorenz96 model with …
The role of large-scale spatial patterns in the chaotic amplification of perturbations in a Lorenz'96 model
S Herrera, D Paz ó, J Ferná Ndez… - Tellus A: Dynamic …, 2011 - Taylor & Francis
The preparation of perturbed initial conditions to initialize an ensemble of numerical weather
forecasts is a crucial task in current ensemble prediction systems (EPSs). Perturbations are …
forecasts is a crucial task in current ensemble prediction systems (EPSs). Perturbations are …
Logarithmic bred vectors. A new ensemble method with adjustable spread and calibration time
C Primo, MA Rodríguez… - Journal of Geophysical …, 2008 - Wiley Online Library
The breeding method is a conceptually simple and computationally cheap ensemble
generation technique. Bred vectors (BV) are dynamically obtained from the nonlinear model …
generation technique. Bred vectors (BV) are dynamically obtained from the nonlinear model …
Error Growth Patterns in Systems with Spatial Chaos:<? format?> From Coupled Map Lattices to Global Weather Models
Error growth in spatiotemporal chaotic systems is investigated by analyzing the interplay
between temporal and spatial dynamics. The spatial correlation and localization of relative …
between temporal and spatial dynamics. The spatial correlation and localization of relative …
Structure of characteristic Lyapunov vectors in anharmonic Hamiltonian lattices
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 …
for two different one-dimensional Hamiltonian lattices: the Fermi-Pasta-Ulam and Φ 4 …