Reference pressure changes and available potential energy in isobaric coordinates

Robertson, Franklin R.

doi:10.1111/j.1600-0870.1985.tb00267.x

Cited by 3 publications

(2 citation statements)

References 13 publications

(11 reference statements)

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“…Resulting contributions of -6& have no significance with respect to baroclinic conversion and must be eliminated. Other problems concerning the reference state for open regions are discussed by Johnson (1970) and Robertson (1985).…”

Section: The Baroclinic Energy Conversion Ratementioning

confidence: 99%

On the numerical evaluation of the energy conversion integral

Ponater

Frenzen

1987

Tellus A: Dynamic Meteorology and Oceanography

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Numerical results of the "ao-" and the "o,'V~-formulation" of the atmospheric energy conversion integral, as derived from ECMWF-data, are presented and discussed. I t is shown that even global integrals of either formulation are considerably different. If the integration area is restricted to hemispheres, the differences --though growing somewhat largerare of similar magnitude. The results suggest that numerical evaluations of the baroclinic energy conversion process are still assochted with a considerable degree of uncertainty.

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Section: The Baroclinic Energy Conversion Ratementioning

confidence: 99%

On the numerical evaluation of the energy conversion integral

Ponater

Frenzen

1987

Tellus A: Dynamic Meteorology and Oceanography

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“…Second, despite its use by Lin and Smith (1982) and Robertson and Smith (1983), DP has not yet been given a completely satisfactory physical description. A remedy to both problems has been recently proposed by Robertson (1985). In this he replaces CA in (2) by -GK + BW from (3) and further shows that…”

Section: Introductionmentioning

confidence: 99%

The kinetic and available potential energy budget of a winter extratropical cyclone system

Smith¹,

Dare²

1986

Tellus A

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The energy budget of an extratropical cyclone system which traversed North America and intensified through the period 9-1 1 January 1975 is presented. The objectives of the study are (1) to document the complete energy budget of a significant winter cyclone event. and (2) to comment on the significance of latent heat release (LHR) in the cyclone's evolution. Results reveal an overall increase in both kinetic ( K ) and available potential energy ( A ) . K increases are accounted for by boundary flux convergence of K , while A increases are due to generation by LHR and K to A conversion. In addition, the general A increase is accompanied by a 24 h oscillation that is explained largely by the flux quantity in the A budget equation and is correlated with a similar fluctuation in the K to A conversion.LHR does not appear to be critical in the development of this cyclone system. Rather. LHR acts to increase the intensity of the event. It is hypothesized that the direct influence that LHR had on the deepening cyclone's reduced mass was augmented by an indirect influence, in which pre-existing dry dynamical forcing was enhanced by diabatic heating. thus leading to accelerated cyclone development at a later time.

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On the numerical evaluation of the energy conversion integral

Ponater¹,

Frenzen²

1987

Tellus A

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Numerical results of the “αω‐” and the “vω Vφ‐formulation” of the atmospheric energy conversion integral, as derived from ECMWF‐data, are presented and discussed. It is shown that even global integrals of either formulation are considerably different. If the integration area is restricted to hemispheres, the differences — though growing somewhat larger — are of similar magnitude. The results suggest that numerical evaluations of the baroclinic energy conversion process are still associated with a considerable degree of uncertainty.

show abstract

Reference pressure changes and available potential energy in isobaric coordinates

Cited by 3 publications

References 13 publications

On the numerical evaluation of the energy conversion integral

On the numerical evaluation of the energy conversion integral

The kinetic and available potential energy budget of a winter extratropical cyclone system

On the numerical evaluation of the energy conversion integral

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