[MITgcm-support] C-D scheme etc.

[David Wang]

Hello folks,

I have a couple of issues to make sure in the case you may help to clarify.
****
1). It is said in the manual, to run the model at a sufficiently 
coarse/*//*/ resolution, one will need the C-D scheme for the 
computation of the Coriolis terms. And the parameter tauCD (C-D scheme 
coupling timescale in second) needs to be set. my question is: how 
coarse is "sufficiently coarse? what about 1-by-1 degree? 1-by-0.3 
degree? Does it have any side-effect? is it sensitive to tauCD?

2). I’m wondering if there is any simple way, without writing out the 
entire three-dimensional variable fields, to monitor the evolution of 
such time series as the NINO3 index, the EUC transport at a particular 
longitude etc.

3). I checked out available_diagnostics.log and didn’t find diagnostics 
for PP81 vertical viscosity/diffusivity (KPP does have though). I know 
they can be computed externally using uvel, vvel, \theta, \alpha \nu0 
etc., but is there any alternative means to make them available?

Thanks a lot,
- D.W.**

-- 
Daiwei (David) Wang    Graduate Student
Lamont-Doherty Earth Observatory of Columbia University
103B Oceanography
61 Route 9W, Palisades, NY 10964-8000
Voice: (845) 365-8694