| A three-dimensional ocean general circulation model for mesoscale eddies——Ⅱ Diagnostic analysis |
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| 作者姓名： | Wang Ji Moto Ikeda |
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| 作者单位： | Graduate School |
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| 摘 要： | A three-dimensional density field associated with mesoscaie unstable waves generated by the 3-D, primitive-equation model (Wang and Ikeda, 1996) is provided to the quasi-geostrophic pressure tendency and ω-equations, and to the (ageostrophic) Q-vector equation. Diagnostic analyses, analogous to the approaches in meteorology: ω-equation and Q-vector method, are for the first time developed to examine the mesoscaie dynamical processes and mechanisms of the unstable waves propagating in the mid-latitude ocean. The weaknesses and strengths of these two diagnostic approaches are evaluated and compared to the model results. The Q-vector method is then recommended to diagnose the vertical motion associated with the mesoscaie dynamics from a hydrographic CTD (conductivity-temperature-depth) array, while the quasi-geostrophic equations produce some small-scale features (errors) in the diagnosed fields.
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| 收稿时间： | 1996/3/15 0:00:00 |
| 修稿时间： | 1996/7/28 0:00:00 |
A three-dimensional ocean general circulation model for mesoscale eddies——Ⅱ Diagnostic analysis |
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| Wang Ji,Moto Ikeda.A three-dimensional ocean general circulation model for mesoscale eddies——Ⅱ Diagnostic analysis[J].Acta Oceanologica Sinica,1997,16(1):29-43. |
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| Authors: | Wang Jia and Moto Ikeda |
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| Institution: | 1.Rosenstiel School of Marine, Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA2.Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan 060 |
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| Abstract: | A three-dimensional density field associated with mesoscaie unstable waves generated by the 3-D,primitive-equation model (Wang and Ikeda,1996) is provided to the quasi-geostrophic pressure tendency and ω-equations,and to the (ageostrophic) Q-vector equation.Diagnostic analyses,analogous to the approaches in meteorology:ω-equation and Q-vector method,are for the first time developed to examine the mesoscaie dynamical processes and mechanisms of the unstable waves propagating in the mid-latitude ocean.The weaknesses and strengths of these two diagnostic approaches are evaluated and compared to the model results.The Q-vector method is then recommended to diagnose the vertical motion associated with the mesoscaie dynamics from a hydrographic CTD (conductivity-temperature-depth) array,while the quasi-geostrophic equations produce some small-scale features (errors) in the diagnosed fields. |
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