C-CD TEST: gx3

[JFLemieux73]

No description provided.

[TillRasmussen]

Plots of ice thickness. March and september 2008. Run starts 1/1/2005

[eclare108213]

Thanks @TillRasmussen ! Please, would you also post difference plots, C-B and CD-B? I would expect the largest differences to be in areas of convergence (or at least multi-year ice), since the errors will "pile up" there along with the sea ice volume. So it's probably difficult to say whether these are strictly due to the shifted location of grid quantities, interactions at land boundaries, etc, but this is a good 'reality check' for guiding more idealized testing.

[TillRasmussen]

Here they are. An interesting thing is that it seems as if B and C are more similar in Antarctic


Again for March first, then september

[JFLemieux73]

FYI. Martin Losch has a paper where they compared B and C grid solutions. Look at figure 4b for example. As opposed to our results it looks like the ice is thicker in their B grid solution compared to the C solution.

https://www.sciencedirect.com/science/article/pii/S1463500309002418?casa_token=2XpDdkbCg8UAAAAA:4CSOP_CmxfzPras7T0I1TC0Isvw-9iM1Gh9oBt_m5OKp_xSKyXL_htds3RDwruXr8aE207_D-Jb3

[dabail10]

This is a great resource. I believe that he did the staggering such that the velocities are at the W and S faces. Not sure what his grid looks like, but I wonder if this could explain why the B grid is thicker in his case?

[apcraig]

I think we should close this. Anyone disagree?

[apcraig]

Closing, active discussions of C-grid testing in #792. Feel free to reopen is needed.