[MITgcm-support] advection scheme 33

[Edward W Doddridge]

Hello Yangxin,

Regarding your first point, there is a section in the manual devoted to advection schemes: https://mitgcm.readthedocs.io/en/latest/algorithm/adv-schemes.html

If you found that section insufficient, it would be good to know why. That way we can work towards improving it.

Cheers,
Ed


________________________________
Edward Doddridge
Postdoctoral researcher
Earth, Atmospheric and Planetary Sciences
Massachusetts Institute of Technology

www.doddridge.me<http://www.doddridge.me>

On 3 Sep 2019, at 14:22, Yangxin He <y67he at uwaterloo.ca<mailto:y67he at uwaterloo.ca>> wrote:

Hi there,

I am running a simple 2d oceanic model with tides sloshing up and down a slope, so internal tides are generated. Part of my data file looks like

 implicitDiffusion=.TRUE.,
 implicitViscosity=.TRUE.,
#change advection shceme
 tempAdvScheme=33,

 staggerTimeStep=.TRUE.,

The simulation is fine. Two quick questions,
1) I am certainly not an expert in coding, but I think it will be a good idea that I can at least have some idea of what I am using. Where can I find out more information about this advection scheme 33? There does not seem much in the manual.
2) In one of my previous threads here
http://mailman.mitgcm.org/pipermail/mitgcm-support/2019-July/012095.html
Jody mentioned adv33 will allow the lateral diffusion set to 0, i.e. diffKhT=0. I tried it, it did work. But why?

Thanks

Yangxin
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