Towards eddy permitting estimates of the global-ocean and sea-ice circulations
Satellite and in-situ observations are now routinely combined with numerical models in order to estimate the time-evolving oceanic circulation and to address a wide variety of operational and research problems. For climate dynamics analysis, what is required is a synthesis of all avail-able observat...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.531.6273 2023-05-15T18:17:32+02:00 Towards eddy permitting estimates of the global-ocean and sea-ice circulations T. Lee M. Steele O. Wang J. Zhang The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.6273 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.6273 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://ams.confex.com/ams/pdfpapers/88068.pdf text ftciteseerx 2016-01-08T10:38:17Z Satellite and in-situ observations are now routinely combined with numerical models in order to estimate the time-evolving oceanic circulation and to address a wide variety of operational and research problems. For climate dynamics analysis, what is required is a synthesis of all avail-able observations over the last several decades with the best possible numerical model. Rigorous low-resolution estimates of ocean circulation are already possible using the existing data base and modeling capability. But these low-resolution estimates lack the ability to resolve many small-scale oceanic processes, for example, ow over narrow sills, western boundary currents, regions of deep convection, and eddies, that are important both for climate studies and for operational applications. I will discuss four recent advances that bring rigorous eddy-permitting estimates of the global ocean and sea-ice circulations within reach: 1) the conguration of an ecient eddy-permitting global-ocean and sea-ice model that achieves a throughput approaching ten years of model integration per day of computation, 2) the demonstration that boundary conditions estimated at coarse resolution have some skill when applied to an eddy-permitting model, 3) the development of an inexpensive yet eective methodology for calibrating model parameters and for blending estimates from dierent so-lutions and data products, and 4) a hierarchical Kalman lter that can estimate model uncertainties Text Sea ice Unknown |
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Satellite and in-situ observations are now routinely combined with numerical models in order to estimate the time-evolving oceanic circulation and to address a wide variety of operational and research problems. For climate dynamics analysis, what is required is a synthesis of all avail-able observations over the last several decades with the best possible numerical model. Rigorous low-resolution estimates of ocean circulation are already possible using the existing data base and modeling capability. But these low-resolution estimates lack the ability to resolve many small-scale oceanic processes, for example, ow over narrow sills, western boundary currents, regions of deep convection, and eddies, that are important both for climate studies and for operational applications. I will discuss four recent advances that bring rigorous eddy-permitting estimates of the global ocean and sea-ice circulations within reach: 1) the conguration of an ecient eddy-permitting global-ocean and sea-ice model that achieves a throughput approaching ten years of model integration per day of computation, 2) the demonstration that boundary conditions estimated at coarse resolution have some skill when applied to an eddy-permitting model, 3) the development of an inexpensive yet eective methodology for calibrating model parameters and for blending estimates from dierent so-lutions and data products, and 4) a hierarchical Kalman lter that can estimate model uncertainties |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
T. Lee M. Steele O. Wang J. Zhang |
spellingShingle |
T. Lee M. Steele O. Wang J. Zhang Towards eddy permitting estimates of the global-ocean and sea-ice circulations |
author_facet |
T. Lee M. Steele O. Wang J. Zhang |
author_sort |
T. Lee |
title |
Towards eddy permitting estimates of the global-ocean and sea-ice circulations |
title_short |
Towards eddy permitting estimates of the global-ocean and sea-ice circulations |
title_full |
Towards eddy permitting estimates of the global-ocean and sea-ice circulations |
title_fullStr |
Towards eddy permitting estimates of the global-ocean and sea-ice circulations |
title_full_unstemmed |
Towards eddy permitting estimates of the global-ocean and sea-ice circulations |
title_sort |
towards eddy permitting estimates of the global-ocean and sea-ice circulations |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.6273 |
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Sea ice |
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Sea ice |
op_source |
https://ams.confex.com/ams/pdfpapers/88068.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.531.6273 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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