The Mechanical Energy Budget of a Regional Ocean Model.
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| Title: | The Mechanical Energy Budget of a Regional Ocean Model. |
|---|---|
| Authors: | MacCready, Parker, Giddings, Sarah N. |
| Source: | Journal of Physical Oceanography. Sep2016, Vol. 46 Issue 9, p2719-2733. 15p. |
| Subjects: | Mathematical models of oceanography, Kinetic energy, Ocean energy resources, Potential energy, Ocean circulation |
| Abstract: | A method is presented for calculating a complete, numerically closed, mechanical energy budget in a realistic simulation of circulation in a coastal-estuarine domain. The budget is formulated in terms of the 'local' available potential energy (APE; Holliday and McIntyre 1981). The APE may be split up into two parts based on whether a water parcel has been displaced up or down relative to its rest depth. This decomposition clearly shows the different APE signatures of coastal upwelling (particles displaced up by wind) and the estuary (particles displaced down by mixing). Because the definition of APE is local in almost the same sense that kinetic energy is, this study may form meaningful integrals of reservoir and budget terms even over regions that have open boundaries. However, the choice of volume to use for calculation of the rest state is not unique and may influence the results. Complete volume-integrated energy budgets over shelf and estuary volumes in a realistic model of the northeast Pacific and Salish Sea give a new way to quantify the state of these systems and the physical forces that influence that state. On the continental shelf, upwelling may be quantified using APE, which is found to have order-one seasonal variation with an increase due to winds and decrease due to mixing. In the Salish Sea estuarine system, the APE has much less seasonal variation, and the magnitude of the most important forcing terms would take over 7 months to fully drain this energy. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Physical Oceanography is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 126578036 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The Mechanical Energy Budget of a Regional Ocean Model. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22MacCready%2C+Parker%22">MacCready, Parker</searchLink><br /><searchLink fieldCode="AR" term="%22Giddings%2C+Sarah+N%2E%22">Giddings, Sarah N.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Physical+Oceanography%22">Journal of Physical Oceanography</searchLink>. Sep2016, Vol. 46 Issue 9, p2719-2733. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mathematical+models+of+oceanography%22">Mathematical models of oceanography</searchLink><br /><searchLink fieldCode="DE" term="%22Kinetic+energy%22">Kinetic energy</searchLink><br /><searchLink fieldCode="DE" term="%22Ocean+energy+resources%22">Ocean energy resources</searchLink><br /><searchLink fieldCode="DE" term="%22Potential+energy%22">Potential energy</searchLink><br /><searchLink fieldCode="DE" term="%22Ocean+circulation%22">Ocean circulation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A method is presented for calculating a complete, numerically closed, mechanical energy budget in a realistic simulation of circulation in a coastal-estuarine domain. The budget is formulated in terms of the 'local' available potential energy (APE; Holliday and McIntyre 1981). The APE may be split up into two parts based on whether a water parcel has been displaced up or down relative to its rest depth. This decomposition clearly shows the different APE signatures of coastal upwelling (particles displaced up by wind) and the estuary (particles displaced down by mixing). Because the definition of APE is local in almost the same sense that kinetic energy is, this study may form meaningful integrals of reservoir and budget terms even over regions that have open boundaries. However, the choice of volume to use for calculation of the rest state is not unique and may influence the results. Complete volume-integrated energy budgets over shelf and estuary volumes in a realistic model of the northeast Pacific and Salish Sea give a new way to quantify the state of these systems and the physical forces that influence that state. On the continental shelf, upwelling may be quantified using APE, which is found to have order-one seasonal variation with an increase due to winds and decrease due to mixing. In the Salish Sea estuarine system, the APE has much less seasonal variation, and the magnitude of the most important forcing terms would take over 7 months to fully drain this energy. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Physical Oceanography is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1175/JPO-D-16-0086.1 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 2719 Subjects: – SubjectFull: Mathematical models of oceanography Type: general – SubjectFull: Kinetic energy Type: general – SubjectFull: Ocean energy resources Type: general – SubjectFull: Potential energy Type: general – SubjectFull: Ocean circulation Type: general Titles: – TitleFull: The Mechanical Energy Budget of a Regional Ocean Model. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: MacCready, Parker – PersonEntity: Name: NameFull: Giddings, Sarah N. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 00223670 Numbering: – Type: volume Value: 46 – Type: issue Value: 9 Titles: – TitleFull: Journal of Physical Oceanography Type: main |
| ResultId | 1 |
