Model selection: Using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations
The use of information measures for model selection in geophysical models with subgrid parameterizations is examined. Although the resolved dynamical equations of atmospheric or oceanic global numerical models are well established, the development and evaluation of parameterizations that represent s...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00224928_v74_n10_p3253_Pulido |
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todo:paper_00224928_v74_n10_p3253_Pulido2023-10-03T14:33:19Z Model selection: Using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations Pulido, M. Rosso, O.A. Data assimilation Lyapunov vectors Optimization Subgrid-scale processes Errors Information theory Mean square error Optimization Parameterization Stochastic models Stochastic systems Systematic errors Turbulent flow Data assimilation Information measures Jensen-Shannon divergence Lyapunov vectors Root mean square errors Statistical complexity Sub-grid scale process Subgrid-scale effects Climate models atmospheric modeling data assimilation numerical model optimization parameterization vector The use of information measures for model selection in geophysical models with subgrid parameterizations is examined. Although the resolved dynamical equations of atmospheric or oceanic global numerical models are well established, the development and evaluation of parameterizations that represent subgrid-scale effects pose a big challenge. For climate studies, the parameters or parameterizations are usually selected according to a root-mean-square error criterion that measures the differences between the model-state evolution and observations along the trajectory. However, inaccurate initial conditions and systematic model errors contaminate root-mean-square error measures. In this work, information theory quantifiers, in particular Shannon entropy, statistical complexity, and Jensen-Shannon divergence, are evaluated as measures of the model dynamics. An ordinal analysis is conducted using the Bandt-Pompe symbolic data reduction in the signals. The proposed ordinal information measures are examined in the two-scale Lorenz-96 system. By comparing the two-scale Lorenz-96 system signals with a one-scale Lorenz-96 system with deterministic and stochastic parameterizations, the study shows that information measures are able to select the correct model and to distinguish the parameterizations, including the degree of stochasticity that results in the closest model dynamics to the two-scale Lorenz-96 system. © 2017AmericanMeteorological Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00224928_v74_n10_p3253_Pulido |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Data assimilation Lyapunov vectors Optimization Subgrid-scale processes Errors Information theory Mean square error Optimization Parameterization Stochastic models Stochastic systems Systematic errors Turbulent flow Data assimilation Information measures Jensen-Shannon divergence Lyapunov vectors Root mean square errors Statistical complexity Sub-grid scale process Subgrid-scale effects Climate models atmospheric modeling data assimilation numerical model optimization parameterization vector |
| spellingShingle |
Data assimilation Lyapunov vectors Optimization Subgrid-scale processes Errors Information theory Mean square error Optimization Parameterization Stochastic models Stochastic systems Systematic errors Turbulent flow Data assimilation Information measures Jensen-Shannon divergence Lyapunov vectors Root mean square errors Statistical complexity Sub-grid scale process Subgrid-scale effects Climate models atmospheric modeling data assimilation numerical model optimization parameterization vector Pulido, M. Rosso, O.A. Model selection: Using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations |
| topic_facet |
Data assimilation Lyapunov vectors Optimization Subgrid-scale processes Errors Information theory Mean square error Optimization Parameterization Stochastic models Stochastic systems Systematic errors Turbulent flow Data assimilation Information measures Jensen-Shannon divergence Lyapunov vectors Root mean square errors Statistical complexity Sub-grid scale process Subgrid-scale effects Climate models atmospheric modeling data assimilation numerical model optimization parameterization vector |
| description |
The use of information measures for model selection in geophysical models with subgrid parameterizations is examined. Although the resolved dynamical equations of atmospheric or oceanic global numerical models are well established, the development and evaluation of parameterizations that represent subgrid-scale effects pose a big challenge. For climate studies, the parameters or parameterizations are usually selected according to a root-mean-square error criterion that measures the differences between the model-state evolution and observations along the trajectory. However, inaccurate initial conditions and systematic model errors contaminate root-mean-square error measures. In this work, information theory quantifiers, in particular Shannon entropy, statistical complexity, and Jensen-Shannon divergence, are evaluated as measures of the model dynamics. An ordinal analysis is conducted using the Bandt-Pompe symbolic data reduction in the signals. The proposed ordinal information measures are examined in the two-scale Lorenz-96 system. By comparing the two-scale Lorenz-96 system signals with a one-scale Lorenz-96 system with deterministic and stochastic parameterizations, the study shows that information measures are able to select the correct model and to distinguish the parameterizations, including the degree of stochasticity that results in the closest model dynamics to the two-scale Lorenz-96 system. © 2017AmericanMeteorological Society. |
| format |
JOUR |
| author |
Pulido, M. Rosso, O.A. |
| author_facet |
Pulido, M. Rosso, O.A. |
| author_sort |
Pulido, M. |
| title |
Model selection: Using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations |
| title_short |
Model selection: Using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations |
| title_full |
Model selection: Using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations |
| title_fullStr |
Model selection: Using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations |
| title_full_unstemmed |
Model selection: Using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations |
| title_sort |
model selection: using information measures from ordinal symbolic analysis to select model subgrid-scale parameterizations |
| url |
http://hdl.handle.net/20.500.12110/paper_00224928_v74_n10_p3253_Pulido |
| work_keys_str_mv |
AT pulidom modelselectionusinginformationmeasuresfromordinalsymbolicanalysistoselectmodelsubgridscaleparameterizations AT rossooa modelselectionusinginformationmeasuresfromordinalsymbolicanalysistoselectmodelsubgridscaleparameterizations |
| _version_ |
1782031119979380736 |