A simultaneous optimization of sea ice model parameters by genetic algorithm
Improvement/optimization of a sea ice model is of great significance for understanding the sea ice physics and for understanding the Arctic climate system and its linkage to the global climate. For better representation of modeled sea ice properties, we develop a parameter optimization system for a...
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ftawi:oai:epic.awi.de:42416 2024-09-15T18:34:07+00:00 A simultaneous optimization of sea ice model parameters by genetic algorithm Sumata, Hiroshi Kauker, Frank Gerdes, Rüdiger Karcher, Michael Köberle, Cornelia 2016-04-27 https://epic.awi.de/id/eprint/42416/ https://hdl.handle.net/10013/epic.49098 unknown Sumata, H. orcid:0000-0002-2832-2875 , Kauker, F. orcid:0000-0002-7976-3005 , Gerdes, R. , Karcher, M. orcid:0000-0002-9587-811X and Köberle, C. (2016) A simultaneous optimization of sea ice model parameters by genetic algorithm , REKLIM workshop, Merseburg, Germany, 27 April 2016 - 29 April 2016 . hdl:10013/epic.49098 EPIC3REKLIM workshop, Merseburg, Germany, 2016-04-27-2016-04-29 Conference notRev 2016 ftawi 2024-06-24T04:15:36Z Improvement/optimization of a sea ice model is of great significance for understanding the sea ice physics and for understanding the Arctic climate system and its linkage to the global climate. For better representation of modeled sea ice properties, we develop a parameter optimization system for a couped ocean-sea ice model. Since the sensitivities of dynamic and thermodynamic parameters of sea ice models are interrelated, the system handles both sets of parameters simultaneously. The system also handles a long assimilation window of 33 years. Such a long time window has never been tested by other algorithms (e.g., adjoint method, EnKF). Since the cost function defined by the model - data misfit may have an ill-shaped structure (multiple local minima), we apply an algorithm, which can find the global minimum of an ill-shaped function. A micro-Genetic Algorithm is one of the possible solutions to optimize sea ice model parameters. Conference Object Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Improvement/optimization of a sea ice model is of great significance for understanding the sea ice physics and for understanding the Arctic climate system and its linkage to the global climate. For better representation of modeled sea ice properties, we develop a parameter optimization system for a couped ocean-sea ice model. Since the sensitivities of dynamic and thermodynamic parameters of sea ice models are interrelated, the system handles both sets of parameters simultaneously. The system also handles a long assimilation window of 33 years. Such a long time window has never been tested by other algorithms (e.g., adjoint method, EnKF). Since the cost function defined by the model - data misfit may have an ill-shaped structure (multiple local minima), we apply an algorithm, which can find the global minimum of an ill-shaped function. A micro-Genetic Algorithm is one of the possible solutions to optimize sea ice model parameters. |
format |
Conference Object |
author |
Sumata, Hiroshi Kauker, Frank Gerdes, Rüdiger Karcher, Michael Köberle, Cornelia |
spellingShingle |
Sumata, Hiroshi Kauker, Frank Gerdes, Rüdiger Karcher, Michael Köberle, Cornelia A simultaneous optimization of sea ice model parameters by genetic algorithm |
author_facet |
Sumata, Hiroshi Kauker, Frank Gerdes, Rüdiger Karcher, Michael Köberle, Cornelia |
author_sort |
Sumata, Hiroshi |
title |
A simultaneous optimization of sea ice model parameters by genetic algorithm |
title_short |
A simultaneous optimization of sea ice model parameters by genetic algorithm |
title_full |
A simultaneous optimization of sea ice model parameters by genetic algorithm |
title_fullStr |
A simultaneous optimization of sea ice model parameters by genetic algorithm |
title_full_unstemmed |
A simultaneous optimization of sea ice model parameters by genetic algorithm |
title_sort |
simultaneous optimization of sea ice model parameters by genetic algorithm |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/42416/ https://hdl.handle.net/10013/epic.49098 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
EPIC3REKLIM workshop, Merseburg, Germany, 2016-04-27-2016-04-29 |
op_relation |
Sumata, H. orcid:0000-0002-2832-2875 , Kauker, F. orcid:0000-0002-7976-3005 , Gerdes, R. , Karcher, M. orcid:0000-0002-9587-811X and Köberle, C. (2016) A simultaneous optimization of sea ice model parameters by genetic algorithm , REKLIM workshop, Merseburg, Germany, 27 April 2016 - 29 April 2016 . hdl:10013/epic.49098 |
_version_ |
1810475857720901632 |