Coarse-grid ocean models parameterise the effects of mesoscale eddies by means of a mixing operator which diffuses tracers along surfaces of constant potential density, called isopycnals. We establish the consistency conditions, the spatio-temporal accuracy error and the computational stability conditions for the small-slope isopycnal mixing operator. (C) 1999 Elsevier Science Ltd. All rights reserved.
Mathieu, P., & Deleersnijder, E. (1999). Accuracy and stability of the discretised isopycnal-mixing equation. Applied Mathematics Letters, 12(4), 81-88. https://doi.org/10.1016/S0893-9659(99)00039-7 (Original work published 1999)