The finite amplitude evolution of mixed Kelvin-Rossby wave instability and equatorial superrotation in a shallow water model and an idealized GCM

Zurita-Gotor, Pablo; Held, Isaac M.

doi:10.1175/JAS-D-17-0386.1

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The finite amplitude evolution of mixed Kelvin-Rossby wave instability and equatorial superrotation in a shallow water model and an idealized GCM

2018
By Zurita-Gotor, Pablo ; Held, Isaac M.
Source: Journal of the Atmospheric Sciences, 75(7)

[PDF-2.17 MB]

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Journal Title:

Journal of the Atmospheric Sciences
Personal Author:

Zurita-Gotor, Pablo ; Held, Isaac M.

Zurita-Gotor, Pablo ; Held, Isaac M. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory)

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory) Less -
Description:

An instability involving the resonant interaction of a Rossby wave and a Kelvin wave has been proposed to drive equatorial superrotation in planetary atmospheres with a substantially smaller radius or a smaller rotation rate than Earth, that is, with a large thermal Rossby number. To pursue this idea, this paper investigates the equilibration mechanism of Kelvin–Rossby instability by simulating the unforced initial-value problem in a shallow-water model and in a multilevel primitive equation model.
Keywords:

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Instability Kelvin Waves Planetary Atmospheres Shallow-water Equations Wave Breaking Atmospheric Waves
Source:

Journal of the Atmospheric Sciences, 75(7)
DOI:

https://doi.org/10.1175/JAS-D-17-0386.1
Document Type:

Journal Article
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Submitted
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urn:sha256:44862fb30ea98bc043b22208d592d04f45e25fcec5fcf59d302115d821231ac4
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https://repository.library.noaa.gov/view/noaa/32894/noaa_32894_DS1.pdf
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The finite amplitude evolution of mixed Kelvin-Rossby wave instability and equatorial superrotation in a shallow water model and an idealized GCM

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