[MITgcm-support] How to convert THETA 's unit degK into degC?

[Matthew Mazloff]

Hi,

The MITgcm uses potential temperature in K for the atmosphere and in  
deg C (referenced to 0 db) for the ocean;  negative values are to be  
expected in the ocean.

I've attached two matlab routines that will allow you to transfer to  
and from pot. temp. for sea water


-matt

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> On Aug 9, 2006, at 9:33 PM, Yuan Lian wrote:

> Could you please show me where you saw negative potential temperature?
> Potential temperature is defined as theta=(Pref/P)^kappa*T where T is
> temperature in K. Thus potential temperature has to be positive.
>
> Yuan
>
> Brainf wrote:
>
>> I know thermodynamic Temperature use K, and It is simplification.
>> But In MITGCM the THETA(Potential Temperature) has minus value in  
>> degK.
>> thermodynamic Temperature hasn't minus value, so I think degK  
>> isn't  thermodynamic Temperature.
>>
>>
>> ======= At 2006-08-09, 23:42:25 you wrote: =======
>>
>>
>>
>>> ?K=273+?C. Most literature about atmospheric and oceanic dynamics  
>>> (or
>>> even general, fluid dynamics) uses K for simplification.
>>>
>>> Yuan
>>>
>>> Brainf wrote:
>>>
>>>
>>>
>>>> Hi all,
>>>>
>>>> I usualy use unit degC in Potential Temperature.
>>>> But now i found MITGCM use  unit degK in  THETA(Potential  
>>>> Temperature).
>>>> What different in degK and degC ? How to convert them?
>>>>
>>>> Best regards.
>>>>
>>>> Brainf
>>>> brainf at 163.com
>>>> 2006-08-09
>>>>
>>>>
>>>> _______________________________________________
>>>> MITgcm-support mailing list
>>>> MITgcm-support at mitgcm.org
>>>> http://mitgcm.org/mailman/listinfo/mitgcm-support
>>>>
>>>>
>>>>
>>>>
>>>>
>>> _______________________________________________
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>>>
>>>
>>
>> = = = = = = = = = = = = = = = = = = = =
>> 			
>>
>> Best regards.				
>> Brainf
>> brainf at 163.com
>> 2006-08-10
>>
>>
>>
>> _______________________________________________
>> MITgcm-support mailing list
>> MITgcm-support at mitgcm.org
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>>
>>
>>
>
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