[MITgcm-support] external forcing

Fri Nov 3 01:05:15 EST 2006

dear MITgcm,

in verification of internal wave, ridges driven by large amplitude barotropic tidal currents imposed through open boundary conditions right?? its mean one of external force which is utilized is sea surface (elevation) at open boundary?? where MITgcm describe it?? i have seen external_forcing.F, but there was no elevation mentioned there....

thank you,
regards,
rima

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Subject: MITgcm-support Digest, Vol 41, Issue 3

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Today's Topics:

   1. units of [U,V,W]THMASS (Dimitris Menemenlis)
   2. Re: units of [U,V,W]THMASS (Jean-Michel Campin)
   3. Re: units of [U,V,W]THMASS (Dimitris Menemenlis)
   4. evaporation fields:  supply or estimate? (Jill N Schwarz)

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Message: 1
Date: Wed, 01 Nov 2006 17:11:58 -0800
From: Dimitris Menemenlis <menemenlis at sbcglobal.net>
Subject: [MITgcm-support] units of [U,V,W]THMASS
To: MITgcm Support <mitgcm-support at mitgcm.org>,    Denis Volkov
    <dvolkov at caltech.edu>
Message-ID: <454945DE.6070909 at sbcglobal.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Are units of [U,V,W]THMASS K*m/s or C*m/s
available_diagnostics.log says K*m/s
but diagnostics_fill_state.F appears to compute C*m/s

------------------------------

Message: 2
Date: Wed, 1 Nov 2006 20:57:22 -0500
From: Jean-Michel Campin <jmc at ocean.mit.edu>
Subject: Re: [MITgcm-support] units of [U,V,W]THMASS
To: mitgcm-support at mitgcm.org
Message-ID: <20061102015722.GA20187 at ocean.mit.edu>
Content-Type: text/plain; charset=us-ascii

Hi Dimitri, 

cut & past from available_diagnostics.log (from an oceanic set-up):
  46 |UTHMASS | 15 |UU   047MR      |degC.m/s        |
  47 |VTHMASS | 15 |VV   046MR      |degC.m/s        |
  48 |WTHMASS | 15 |WM      LR      |degC.m/s        |
  52 |UVELTH  | 15 |UU   053MR      |degC.m/s        |
  53 |VVELTH  | 15 |VV   052MR      |degC.m/s        |
  54 |WVELTH  | 15 |WM      LR      |degC.m/s        |
Could it be that your "available_diagnostics.log" is old ?
or your version of code is old ?

Jean-Michel

On Wed, Nov 01, 2006 at 05:11:58PM -0800, Dimitris Menemenlis wrote:
> Are units of [U,V,W]THMASS K*m/s or C*m/s
> available_diagnostics.log says K*m/s
> but diagnostics_fill_state.F appears to compute C*m/s
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support

------------------------------

Message: 3
Date: Wed, 01 Nov 2006 18:09:23 -0800
From: Dimitris Menemenlis <menemenlis at sbcglobal.net>
Subject: Re: [MITgcm-support] units of [U,V,W]THMASS
To: mitgcm-support at mitgcm.org
Cc: Denis Volkov <dvolkov at caltech.edu>
Message-ID: <45495353.6020200 at sbcglobal.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Jean-Michel, thank you for quick reply.
Yes my available_diagnostics.log file was old.
Dimitris

> Hi Dimitri, 
> 
> cut & past from available_diagnostics.log (from an oceanic set-up):
>   46 |UTHMASS | 15 |UU   047MR      |degC.m/s        |
>   47 |VTHMASS | 15 |VV   046MR      |degC.m/s        |
>   48 |WTHMASS | 15 |WM      LR      |degC.m/s        |
>   52 |UVELTH  | 15 |UU   053MR      |degC.m/s        |
>   53 |VVELTH  | 15 |VV   052MR      |degC.m/s        |
>   54 |WVELTH  | 15 |WM      LR      |degC.m/s        |
> Could it be that your "available_diagnostics.log" is old ?
> or your version of code is old ?
> 
> Jean-Michel

------------------------------

Message: 4
Date: Thu, 02 Nov 2006 15:08:32 +0100
From: Jill N Schwarz <jschwarz at awi-bremerhaven.de>
Subject: [MITgcm-support] evaporation fields:  supply or estimate?
To: mitgcm-support at mitgcm.org
Message-ID: <4549FBE0.8020002 at awi-bremerhaven.de>
Content-Type: text/plain; charset=us-ascii; format=flowed

Hi all,
Does anyone have an opinion/recommendation on whether it's better to 
supply reanalysis evaporation fields (along with precip/humid/wind etc 
etc), so that the mitgcm ocean surface temperature is not consistent 
with the evaporation, but the forcing fields are all consistent with 
each other, or to allow mitgcm to calculate the evaporation based on 
external humidity and insolation fields plus it's own ocean surface 
temperature?

Plus, if anyone else is using ERA-40 forcing data (specifically 
evaporation, precipitation and humidity 6 hourly fields) and has a 100% 
sure way of converting their 'metres of water accumulated over the 
period of the forecast' into metres/second, i'd be really grateful to 
hear how it's done- whatever i try i get values 1 or 2 orders of 
magnitude higher than the mitgcm exf_check_range expected ranges recommends.

Cheers,
jill.

------------------------------

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