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108606 |
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|a dc
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|a Polvani, Lorenzo M.
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|a Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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|a Massachusetts Institute of Technology. Program in Atmospheres, Oceans, and Climate
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|a Esler Jr, Kenneth P
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|a Plumb, Raymond Alan
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|a Esler Jr, Kenneth P
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|a Plumb, Raymond Alan
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|a On the mix-down times of dynamically active potential vorticity filaments
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|b American Geophysical Union (AGU),
|c 2017-05-02T18:24:14Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/108606
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|a 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.
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|a en_US
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|a Article
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|t Geophysical Research Letters
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