[MITgcm-support] bottomDragQuadratic magnitude

[Dong Jian (ENV - Postgraduate Researcher)]

Hi, Dear MITgcm-ers

I am wondering if anyone has experience with the choice of bottomDragQuadratic coefficient? Typical values I can refer to are bottomDragQuadratic = 1.E-3, or bottomDragQuadratic=2.5E-3.

But I am testing a regional model over very rough topography, I do find larger bottomDragQuadratic (even much larger than 2.5E-3 ) gives a closer transport and more similar circulation pattern compared with reanalysis, is there a limit value on the choice of bottomDragQuadratic?

Thanks in advance!
Dong
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