[MITgcm-support] vertical momentum tendency

[Matthew Mazloff]

Hi Haoron

Dump snapshots at the interval you need to get dW/dt.

For example daily tendency would be derived from 
   frequency(1) = -86400.0,
   timePhase(1) = 0.0,
   fields(1,1) = 'WVEL    ',
   filename(1) = ‘WvelSnap’,


Matt


> On May 17, 2022, at 5:47 PM, 钱钰坤 <qianyk at mail3.sysu.edu.cn> wrote:
> 
> Hi Haoran,
> 
> Thank you for your help.  But I don't really know how these two diagnostics
> could help in deriving the tendency of w (unit of acceleration).
> 
> My understanding is that these two diagnostics are useful in calculating the
> eddy momentum flux when the output is time-average <> one.  For example,
> <w'u'> = <wu> - <w><u>
> If we output monthly mean wu, w, and u, we can get eddy flux <w'u'> for this
> month.
> 
> Best regards 
> 
> -----------------------------------------
> Yu-Kun Qian (钱钰坤)
> South China Sea Institute of Oceanology
> Sun Yat-sen University
> Xingang West Road, Haizhu District
> Guangzhou, P.R. China
> Email: qianyukun at scsio.ac.cn, qianyk at mail3.sysu.edu.cn <mailto:qianyk at mail2.sysu.edu.cn>
>  
>  
>  
>  
> ------------------ 原始邮件 ------------------
> 发件人: "Haoran Xu"<xu1jian2wei3 at 163.com>;
> 发送时间: 2022年5月17日(星期二) 晚上7:40
> 收件人: "MITgcm-support"<mitgcm-support at mitgcm.org>;
> 主题: Re: [MITgcm-support] vertical momentum tendency
>  
> Hi，
>  If I understand correctly,these two diagnostics could help.
> 
> 
> WU_VEL  |WU      LR|m.m/s^2         |Vertical Transport of Zonal Momentum
> WV_VEL  |WV      LR|m.m/s^2         |Vertical Transport of Meridional Momentum
> 
>  Haoran Xu.
> 
> At 2022-05-17 18:30:48, "钱钰坤" <qianyk at mail3.sysu.edu.cn> wrote:
> 
> Hi all,
> 
> Just a quick question.  Why there is no tendency of vertical momentum,
> like TOTWTEND, in the diagnostics even the non-hydrostatic option is
> turned on?
> 
> To close the energy budget, I guess we need this diagnostic.  Is there any
> workaround to obtain it if there is no TOTWTEND?
> 
> Best regards.
> 
> ---------------------------
> Yu-Kun Qian (钱钰坤)
> South China Sea Institute of Oceanology
> Sun Yat-sen University 
> Xingang West Road, Haizhu District 
> Guangzhou, P.R. China
> Email: qianyk at mail3.sysu.edu.cn <mailto:qianyk at mail2.sysu.edu.cn>
>  
>  
> 
> 
>  
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.mitgcm.org_mailman_listinfo_mitgcm-2Dsupport&d=DwICAg&c=-35OiAkTchMrZOngvJPOeA&r=HSHS34ROdfL7f2oVxuKB761hrMvWN1RWA5k3SHGts_s&m=3dmk9mE5wbsK8pGhM9ik2Mywehebv53YMmvBG-OJeJ1YILefVCNpFtkCisx_V2rL&s=-KY9LHIxlYVAlDaSW3axV0lhAZkr0gMbYyogCKxqBQs&e= 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.mitgcm.org/pipermail/mitgcm-support/attachments/20220517/9cba3f83/attachment.html>