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Filter accuracy for the Lorenz ’96 Model 46

Wave propagation in the Lorenz-96 model

Wave propagation in the Lorenz-96 model

... Received: 22 September 2017 – Discussion started: 9 October 2017 Revised: 2 February 2018 – Accepted: 10 April 2018 – Published: 27 April 2018 Abstract. In this paper we study the spatiotemporal proper- ties of waves in ...

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Spatio-temporal error growth in the multi-scale Lorenz’96 model

Spatio-temporal error growth in the multi-scale Lorenz’96 model

... L96 model emulat- ing atmospheric flows: waves with mean length of 5 units travel westward in a noisy background induced by chaos spending 7–9 time units to complete a latitude ...two-scale model (1) ...

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Noise effects in extended chaotic system: study on the Lorenz'96 model

Noise effects in extended chaotic system: study on the Lorenz'96 model

... quasi-periodic behavior. On the other hand, we have found a SSSR-like behavior, indicating that there is an optimal system size for the analysis of the spatial system’s response. As indicated before, the effect of noise ...

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Forecast improvement in Lorenz 96 system

Forecast improvement in Lorenz 96 system

... improved model that represents interactive ensemble of individual ...the Lorenz 96 toy model. One complex model is considered as reality, while its imperfect models are taken to be ...

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Lyapunov analysis of multiscale dynamics: the slow bundle of the two-scale Lorenz 96 model

Lyapunov analysis of multiscale dynamics: the slow bundle of the two-scale Lorenz 96 model

... Abstract. We investigate the geometrical structure of insta- bilities in the two-scale Lorenz 96 model through the prism of Lyapunov analysis. Our detailed study of the full spectrum of covariant ...

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Resonant phenomena in extended chaotic systems subject to external noise: The Lorenz'96 model case

Resonant phenomena in extended chaotic systems subject to external noise: The Lorenz'96 model case

... 1 Instituto de F´ısica de Cantabria, Universidad de Cantabria and CSIC, E-39005 Santander, Spain Abstract We investigate the effects of a time-correlated noise on an extended chaotic system. The chosen model is ...

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Chapter 1. The Lorenz Model. 1.1 Introduction

Chapter 1. The Lorenz Model. 1.1 Introduction

... Lorenz took the value to be 10 in his paper; for water the value is typically between 1 and 4, for an ideal gas the value is about 0 .7, and for oils the value is 10 − 1000 or even higher. The number b = 8/3: this ...

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Improvement in Differential GPS Accuracy using Kalman Filter

Improvement in Differential GPS Accuracy using Kalman Filter

... Selective Availability SA is a deliberate error which reduces the potential for GPS signal to be used in hostilities toward the USA and its allies. The SA's most important feature is its being independent from dierent ...

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Improvement of Navigation Accuracy using Tightly Coupled Kalman Filter

Improvement of Navigation Accuracy using Tightly Coupled Kalman Filter

... Kalman filter provides optimal method for states estimation and also creates possibility of combining several measurements to acquiesce a united estimate of system ...Kalman filter is a novel and applicable ...

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A Rainfall - Runoff Model for the Highly Regulated Lake Taupo Catchment, Using a Constrained Ensemble Kalman Filter to Improve the Accuracy and Reliability of Model Output

A Rainfall - Runoff Model for the Highly Regulated Lake Taupo Catchment, Using a Constrained Ensemble Kalman Filter to Improve the Accuracy and Reliability of Model Output

... 160 | Model calibration and sensitivity analysis to 0.4. KGE values for the fit to the time series increased from 0.88 to over 0.91 (an improvement of 4%). Identifiable parameters present a clear relationship ...

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Digital Inverse Filter Model

Digital Inverse Filter Model

... Inverse Filter Mathematical Model Kindly assure that the Contact Volume Editor is given the name and email address of the contact author for your ...

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Averaging Lorenz Curves

Averaging Lorenz Curves

... The Lorenz curve is an important tool for the measurement of income ...the Lorenz curve is the Gini ...the Lorenz curve and a 45 degree line in a graph that has the cumulative proportions of income ...

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Accuracy and Stability of the Continuous-Time 3DVAR Filter for the Navier-Stokes Equation

Accuracy and Stability of the Continuous-Time 3DVAR Filter for the Navier-Stokes Equation

... prototype model in this ...of accuracy and stability of filters for data assimilation has been a developing area over the last few years and the paper [6] contains finite dimensional the- ory and numerical ...

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Accuracy and stability of the continuous-time 3DVAR filter for the Navier–Stokes equation

Accuracy and stability of the continuous-time 3DVAR filter for the Navier–Stokes equation

... crete time, and in this paper we address similar questions in the continuous time setting; both papers include the possibility of only partial observations in Fourier space. Taken together, the current paper and [ 5 ] ...

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A Hybrid Model for Indoor Spatial Reasoning. Bernhard Lorenz, Hans Jürgen Ohlbach

A Hybrid Model for Indoor Spatial Reasoning. Bernhard Lorenz, Hans Jürgen Ohlbach

... with in a quantitative manner. Classical applications are routing and navigation, the main focus being shortest or quickest routes. These, in turn, are more easily determined by quantitative means. The necessity for ...

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Nonlinear feedback in a six-dimensional Lorenz model: impact of an additional heating term

Nonlinear feedback in a six-dimensional Lorenz model: impact of an additional heating term

... The 5DLM and 6DLM share some similarities regard- ing the system’s stability, but the 6DLM has one additional model. To further our understanding of the dynamics of chaos, it is required to address whether and ...

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Finite model order accuracy in Hammerstein model estimation

Finite model order accuracy in Hammerstein model estimation

... orthonormal basis functions. Finally, under certain as- sumptions on the input and noise processes, C 2 is given a more explicit formulation in Theorem 4.3. The expressions are valid for finite model orders and ...

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Accuracy of Energy Model Calibration with IPMI

Accuracy of Energy Model Calibration with IPMI

... VI. C ONCLUSION AND F UTURE W ORK In conclusion we have shown how IPMI although relatively inaccurate can be used in various specialised scenarios. These include showing the energy consumption due to additional load of ...

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Improve Model Accuracy with Unstructured Data

Improve Model Accuracy with Unstructured Data

... Modeler Premium’s powerful automation tools, including automated data preparation and auto modeling, make it easy to prepare data for analysis, find the best model based on hidden patterns in the data and quickly ...

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Accuracy of the Subtraction Model Used in SASSI

Accuracy of the Subtraction Model Used in SASSI

... Subtraction Model are only found to be accurate up to a o = 3, where a o = ω R / V s and R is the equivalent foundation radius, V s is shear wave velocity of soil media, and ω is circular ...soil model. For ...

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