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Various corrections: o implicitDiffusion was missing from PARAMS.h (obviously forgot to commit) o maskUp in calc_common_fact() is now correct o find_rho() now has the proper "referencing" for "LINEAR" eos-mode [also affected a call from dynamics()]
Implemented implicit vertical diffusion (tracers only). Involved introducing a "total" diffusivity array (local 3D) calculated by calc_diffusivity(). Made some small changes to time-stepping algorithm. Switched on by setting implicitZdiffusion. (note: *Not* fully tested with topography. But when switched off this does produce identical results)
Swapped the time-stepping algorithm around (just a little bit). We now officially use the predictor-corrector terminology. We make the prediction step at the end of the dynamics() section and store the result in the gUNm1, gVNm1, gTNm1 arrays. The "tricky" part is that at the beginning of the dynamics section, where the "correction" is made, theses arrays must be initialised at the beginning of any run. A new routine init_predictor() does this. This is "all" in preparation for implicit diffusion. Let's hope it's enough...
Changes to: o read in coefficients for POLY3 EOS. o find_rho() polynomial evaluation has been factorized. o additional density field needed in calc_iso_slopes() with non-linear EOS. This EOS must use the appropriate version of KNUDSEN to generate the coefficients file (POLY3.COEFFS). C7 and C8 were back to front in all previous versions of the model (compare01).
Added flags for turning off momentum equation and/or temperature equation
Added extra IO features - runtime on/off flags - more reporting of configuration
Added changes to support implicit free-surface. - included gBaro a "barotropic" gravity that can be set differently to the g.rhoprime gravity. - discovered and fixed coding error in dynamics loop. Per tile temporaries that needed correct initial values were not being reset for each tile.
GM/Redi parameterization. calc_isoslopes() calculates components of Redi tensor. calc_gt() then uses these components in a modified vertical tracer flux. AJA
Changed the descretization of hydrostatic pressure (now barZ(dz)*barZ(rho) ) to conserve potential energy. This was the original discretization but when I (AJA) made the outer K loop I changed the discretization. Sorry.
Moved the "K loop" from timestep() upto dynamics(). dynamics() now contains all K loops (two infact).
Moved the K loops from convect(), find_rho() and calc_ph() up to this level (dynamics).
Further $Id to $Header conversions
Initial revision
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