[MITgcm-support] KPP and zref with fine resolution vertical grid

Hazel, Julia jhazel at atmos.ucla.edu
Thu Oct 20 13:33:52 EDT 2016

Hi Dimitris-
Just to clarify, do you mean the sea-ice albedos are probably not adjusted to the AMPS forcing?
I thought that the exf_albedo needed to be on the order of ~.1 for water regardless.
> On Oct 19, 2016, at 5:36 PM, Dimitris Menemenlis <dmenemenlis at gmail.com> wrote:
> No experience with AMPS but my guess is that your problem is that your model subgrid-scale physics and other parameters, e.g., albedo were adjusted for different forcing and are not consistent with AMPS.
> If you suspect KPP as primary cause, you could try running with one of the other vertical mixing schemes, e.g., pkg/ggl90. But I doubt that's your order-1 problem. I don't recommend modifying KPP code as a first go --- as you say it's messy.
> Dimitris Menemenlis
> 818-625-6498
>> On Oct 19, 2016, at 5:23 PM, Hazel, Julia <jhazel at atmos.ucla.edu> wrote:
>> I'm using AMPS / Polar WRF for my surface forcing- I chose it as the most reliable for the poles/since I'm simulating the Weddell Sea in Antarctica. I'm using SOSE for my boundary conditions including sea ice.  I do have some concerns as to how well SOSE is representing the sea ice, especially at the eastern boundary of my domain.
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