Atmospheric available energy

Peter R. Bannon

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


The total potential energy of the atmosphere is the sum of its internal and gravitational energies. The portion of this total energy available to be converted into kinetic energy is determined relative to an isothermal, hydrostatic, equilibrium atmosphere that is convectively and dynamically ''dead.'' The temperature of this equilibrium state is determined by minimization of a generalized Gibbs function defined between the atmosphere and its equilibrium. Thus, this function represents the maximum amount of total energy that can be converted into kinetic energy and, hence, the available energy of the atmosphere. This general approach includes the effects of terrain, moisture, and hydrometeors. Applications are presented for both individual soundings and idealized baroclinic zones. An algorithm partitions the available energy into available baroclinic and available convective energies. Estimates of the available energetics of the general circulation suggest that atmospheric motions are primarily driven by moist and dry fluxes of exergy from the earth's surface with an efficiency of about two-thirds.

Original languageEnglish (US)
Pages (from-to)3733-3744
Number of pages12
JournalJournal of the Atmospheric Sciences
Issue number12
StatePublished - Dec 2012

All Science Journal Classification (ASJC) codes

  • Atmospheric Science


Dive into the research topics of 'Atmospheric available energy'. Together they form a unique fingerprint.

Cite this