[MITgcm-support] A query about EXF

[Menemenlis, Dimitris (3248)]

Hi Abhisek, you are correct.
The table shows you the various combinations of surface forcings
that you can use and the flags that you need to set.
In your case you need to pay attention to
C hflux :: Net upward surface heat flux including shortwave in W/m^2
C          hflux = latent + sensible + lwflux + swflux
C          > 0 for decrease in theta (ocean cooling)

The model does not make a distinction between HS and HL.
You will have to add them together, and to shortwave and
longwave also, if you want to use.

Dimitris Menemenlis

> On 10/09/2013 06:55 PM, Abhisek Chakraborty wrote:
> Dear Dimitris Menemenlis,

> 
> I am using 63m version of the model and and the EXF_OPTIONS.h (e.g.
> "global_with_exf") shows a table like the following one:
> 
> c    WIND |TEMP |DOWN |BULK |EVAP |            actions
> c    -----|-----|-----|-----|-----|-------------------------------------
> c         |     |     |     |     |
> c      -  |  -  |  -  |  -  |  -  | Read-in ustress, vstress, hflux,
> c         |     |     |     |     | swflux, and sflux.
> c         |     |     |     |     |
> c     def | def | def | def |  -  | Read-in uwind, vwind, atemp, aqh,
> c         |     |     |     |     | swdown, lwdown, precip, and runoff.
> c         |     |     |     |     | Compute ustress, vstress, hflux,
> c         |     |     |     |     | swflux, and sflux.
> c         |     |     |     |     |
> c     def | def |  -  | def |  -  | Read-in uwind, vwind, atemp, aqh,
> c         |     |     |     |     | swflux, lwflux, precip, and runoff.
> c         |     |     |     |     | Compute ustress, vstress, hflux,
> c         |     |     |     |     | and sflux.
> c         |     |     |     |     |
> c     def |  -  |  -  | def |  -  | Read-in uwind, vwind, hflux,
> c         |     |     |     |     | swflux, and sflux.
> c         |     |     |     |     | Compute ustress and vstress.
> c         |     |     |     |     |
> c      -  | def |  -  | def |  -  | Read-in ustress, vstress, atemp,
> c         |     |     |     |     | aqh, swflux, lwflux, precip, and
> c         |     |     |     |     | runoff.  Compute hflux and sflux.
> c         |     |     |     |     |
> c     def | def |  -  |  -  | def | Read-in uwind, vwind, atemp, aqh,
> c         |     |     |     |     | swflux, lwflux, precip, runoff,
> c         |     |     |     |     | and evap.
> c         |     |     |     |     |
> c     def | def |  -  | def |  -  | Read-in uwind, vwind, atemp, aqh,
> c         |     |     |     |     | swflux, lwflux, precip, and runoff.
> c         |     |     |     |     | Compute open-water ustress, vstress,
> c         |     |     |     |     | hflux, swflux, and evap.
> c         |     |     |     |     |
> c     def | def | def |  -  | def | Read-in uwind, vwind, atemp, aqh,
> c         |     |     |     |     | swdown, lwdown, precip, runoff,
> c         |     |     |     |     | and evap.
> c         |     |     |     |     |
> c     def | def | def | def |  -  | Read-in uwind, vwind, atemp, aqh,
> c         |     |     |     |     | swdown, lwdown, precip, and runoff.
> c         |     |     |     |     | Compute open-water ustress, vstress,
> c         |     |     |     |     | hflux, swflux, and evap.
> 
> 
> Here I didn't find how to use hs and hl as inputs to EXF.
> 
>  (As far as I understand, EXF is using the above parameters to compute
> mainly wind stresses and sensible as well as latent heat fluxes. SO
> THERE MUST BE SOME MEANS TO USE UWIND, VWIND, HS AND HL DIRECTLY IN THE
> EXF PACKAGE).
> 
> Any suggestion .....
> 
> regards,
> Abhisek