[MITgcm-support] TEOS-10

[Ryan Abernathey]

Ok, thanks for the update. As appealing as it sounds to spend the next year
with my head buried in the TEOS-10 manual, no, I don't think I will be
taking on this project myself! ;)

-Ryan

On Wed, Mar 18, 2015 at 7:51 AM, David Ferreira <dfer at mit.edu> wrote:

>
> Could be worth talking to Fabien Roquet. I think he has done some of this
> work for NEMO. It won;t help with the choices of implementation in the
> MITgcm, but the physics must have been sorted out.
> Not sure if Fabien is on this list.
>
>
>
> On 3/18/15 10:26 AM, Martin Losch wrote:
>
>> Hi Ryan,
>>
>> TEOS-10 is not complete unfortunately, the computation of density and
>> expansion/contraction coefficients works, but with this eos you need to
>> re-interpret “theta” as “conservative temperature” (in degC) and “salt” as
>> “absolute salinity” (in g/kg). The works fine, if you don’t have any bulk
>> formulae that require surface (“in-situ” or, because at the surface,
>> “potential”) temperature. This needs to be calculated from conservative
>> temperature. I checked in parts of the gsw_toolbox, that does that (file
>> gsw_teos10.F) but that is not used anywhere so far. You’d have to start
>> implementing the computation of surface temperature from conservative
>> temperature yourself.
>>
>> Jean-Michel and I haven’t decided yet, what we think is the correct way
>> of doing this, also because the documentation of TEOS-10 is a little foggy
>> about details (after providing a myriad of constants with double precision:
>> 16 digits). So far it appears to us, that if we add a bucket of freshwater
>> at 10degC to seawater at in-situ 10degC and 0g/kg, we don’t get what we
>> expect (i.e., sea water at 10degC).
>>
>> Bottom line: you are very welcome to contribute to this (o:
>>
>> Martin
>>
>>  On 17 Mar 2015, at 20:41, Ryan Abernathey <ryan.abernathey at gmail.com>
>>> wrote:
>>>
>>> Hi,
>>>
>>> What is the status of TEOS-10 in MITgcm? I see that it is an option for
>>> the equation of state. Does it work properly? My simulation needs exf...do
>>> I need to modify my configuration in any way coming from JMD95?
>>>
>>> Thanks,
>>> Ryan
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>>
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>
>
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