A theory of available energy for axisymmetric circulations is presented.The theory is a generalization of the classical theory of available potential energy, in that it accounts for both thermal and angular momentum constraints on the circulation.The Spray Arm Retaining Bush generalization relies on the Hamiltonian structure of the (conservative) dynamics, is exact at finite amplitude, and has a Paring Knife Sets local form.
Application of the theory is presented for the case of an axisymmetric vortex on an f-plane in the context of the Boussinesq equations.