Global transport calculations with an equivalent barotropic system
Transport properties of the two-dimensional equations governing equivalent barotropic motion are investigated on the sphere. This system has ingredients such as forcing, equivalent depth, and thermal dissipation explicitly represented, and takes into account compression effects associated with verti...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19900038041 2023-05-15T18:02:15+02:00 Global transport calculations with an equivalent barotropic system Salby, Murry L. O'Sullivan, Donal Garcia, Rolando R. Tribbia, Joseph Unclassified, Unlimited, Publicly available Jan 15, 1990 http://ntrs.nasa.gov/search.jsp?R=19900038041 unknown http://ntrs.nasa.gov/search.jsp?R=19900038041 Accession ID: 90A25096 Copyright Other Sources 47 Journal of the Atmospheric Sciences; 47; 188-214 1990 ftnasantrs 2012-02-15T18:26:42Z Transport properties of the two-dimensional equations governing equivalent barotropic motion are investigated on the sphere. This system has ingredients such as forcing, equivalent depth, and thermal dissipation explicitly represented, and takes into account compression effects associated with vertical motion along isentropic surfaces. Horizontal transport properties of this system are investigated under adiabatic and diabatic conditions for different forms of dissipation, and over a range of resolutions. It is shown that forcing represetative of time-mean and amplified conditions at 10 mb leads to the behavior typical of observations at this level. The displacement of the polar night vortex and its distortion into a comma shape are evident, as is irreversible mixing under sufficiently strong forcing amplitude. It is shown that thermal dissipation influences the behavior significantly by inhibiting the amplification of unstable eddies and thereby the horizontal stirring of air. Other/Unknown Material polar night NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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47 |
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47 Salby, Murry L. O'Sullivan, Donal Garcia, Rolando R. Tribbia, Joseph Global transport calculations with an equivalent barotropic system |
topic_facet |
47 |
description |
Transport properties of the two-dimensional equations governing equivalent barotropic motion are investigated on the sphere. This system has ingredients such as forcing, equivalent depth, and thermal dissipation explicitly represented, and takes into account compression effects associated with vertical motion along isentropic surfaces. Horizontal transport properties of this system are investigated under adiabatic and diabatic conditions for different forms of dissipation, and over a range of resolutions. It is shown that forcing represetative of time-mean and amplified conditions at 10 mb leads to the behavior typical of observations at this level. The displacement of the polar night vortex and its distortion into a comma shape are evident, as is irreversible mixing under sufficiently strong forcing amplitude. It is shown that thermal dissipation influences the behavior significantly by inhibiting the amplification of unstable eddies and thereby the horizontal stirring of air. |
format |
Other/Unknown Material |
author |
Salby, Murry L. O'Sullivan, Donal Garcia, Rolando R. Tribbia, Joseph |
author_facet |
Salby, Murry L. O'Sullivan, Donal Garcia, Rolando R. Tribbia, Joseph |
author_sort |
Salby, Murry L. |
title |
Global transport calculations with an equivalent barotropic system |
title_short |
Global transport calculations with an equivalent barotropic system |
title_full |
Global transport calculations with an equivalent barotropic system |
title_fullStr |
Global transport calculations with an equivalent barotropic system |
title_full_unstemmed |
Global transport calculations with an equivalent barotropic system |
title_sort |
global transport calculations with an equivalent barotropic system |
publishDate |
1990 |
url |
http://ntrs.nasa.gov/search.jsp?R=19900038041 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
polar night |
genre_facet |
polar night |
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Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19900038041 Accession ID: 90A25096 |
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Copyright |
_version_ |
1766172037022220288 |