On the mix-down times of dynamically active potential vorticity filaments
A simple model is used to study the evolution of potential vorticity filaments, viewed in cross-section, subject to steady shear and deformation flows representative of the large-scale atmospheric circulation. It is found that the balanced, ageostrophic circulation induced by the anomalous potential...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Geophysical Union (AGU)
2017
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| Online Access: | http://hdl.handle.net/1721.1/108606 https://orcid.org/0000-0002-6716-1576 |
| _version_ | 1811087261417078784 |
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| author | Polvani, Lorenzo M. Esler Jr, Kenneth P Plumb, R. Alan |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Polvani, Lorenzo M. Esler Jr, Kenneth P Plumb, R. Alan |
| author_sort | Polvani, Lorenzo M. |
| collection | MIT |
| description | A simple model is used to study the evolution of potential vorticity filaments, viewed in cross-section, subject to steady shear and deformation flows representative of the large-scale atmospheric circulation. It is found that the balanced, ageostrophic circulation induced by the anomalous potential vorticity can cause the evolution of a dynamically active filament to differ substantially from that of a dynamically passive filament in a similar background flow. It is suggested that estimates of the mix-down time of material contained in atmospheric filaments need to be corrected to allow for this effect. |
| first_indexed | 2024-09-23T13:42:38Z |
| format | Article |
| id | mit-1721.1/108606 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:42:38Z |
| publishDate | 2017 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/1086062024-05-15T03:19:32Z On the mix-down times of dynamically active potential vorticity filaments Polvani, Lorenzo M. Esler Jr, Kenneth P Plumb, R. Alan Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Program in Atmospheres, Oceans, and Climate Esler Jr, Kenneth P Plumb, Raymond Alan A simple model is used to study the evolution of potential vorticity filaments, viewed in cross-section, subject to steady shear and deformation flows representative of the large-scale atmospheric circulation. It is found that the balanced, ageostrophic circulation induced by the anomalous potential vorticity can cause the evolution of a dynamically active filament to differ substantially from that of a dynamically passive filament in a similar background flow. It is suggested that estimates of the mix-down time of material contained in atmospheric filaments need to be corrected to allow for this effect. 2017-05-02T18:24:14Z 2017-05-02T18:24:14Z 1999-10 1999-06 Article http://purl.org/eprint/type/JournalArticle 0094-8276 http://hdl.handle.net/1721.1/108606 Esler, J. Gavin, Lorenzo M. Polvani, and R. Alan Plumb. “On the Mix-down Times of Dynamically Active Potential Vorticity Filaments.” Geophysical Research Letters 26, no. 19 (October 1, 1999): 2953–2956. https://orcid.org/0000-0002-6716-1576 en_US http://dx.doi.org/10.1029/1999GL010875 Geophysical Research Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union (AGU) Other univ. web domain |
| spellingShingle | Polvani, Lorenzo M. Esler Jr, Kenneth P Plumb, R. Alan On the mix-down times of dynamically active potential vorticity filaments |
| title | On the mix-down times of dynamically active potential vorticity filaments |
| title_full | On the mix-down times of dynamically active potential vorticity filaments |
| title_fullStr | On the mix-down times of dynamically active potential vorticity filaments |
| title_full_unstemmed | On the mix-down times of dynamically active potential vorticity filaments |
| title_short | On the mix-down times of dynamically active potential vorticity filaments |
| title_sort | on the mix down times of dynamically active potential vorticity filaments |
| url | http://hdl.handle.net/1721.1/108606 https://orcid.org/0000-0002-6716-1576 |
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