# Re: [ferret_users] the poings right below the MLD

```Hi Seon & Ansley,
I wrote 3 GO files to do the calculation of MLD
variables easily. Please see the files in the attached tar file
(mld_jnls.tar). Now the process of finding the MLD and a field's
value just below the MLD can be done with these GO files quiet
easily. Here is a small description about the 3 GO files in the
attachment (for more details see the comment in the beggining of
these jnl files) :

mld_dens.jnl : To find MLD based on density criteria.
Inputs : temp & salt , delta_T (optional)
Output : mld_d

mld_temp.jnl : To find MLD based on temperature criteria.
(It is same is Isothermal Layer Depth, ILD)
Inputs : temp , delta_T (optional)
Output : mld_t

mlbase_var.jnl : To find the value of a variable (say temp or salt)
at the base of the given Mixed Layer.
To extend the given MLD to the base of the
corresponding grid cells

Inputs : field to be extracted (temp/salt/dens...)
and MLD
Output : var_mlbase & mld_extn

How to solve your problem using these jnl files ? Here is an example :

yes? use levitus_climatology
yes? set reg/x=30:120/y=-30:30
yes? go mld_temp temp
yes? go mlbase_var temp, mld_t
yes? list/x=60/y=10 mld_t
yes? list/x=60/y=10 mld_extn
yes? list/x=60/y=10 temp_mlbase
yes? list/x=60/y=10 temp
yes? fill temp_mlbase

If there is any problem with these GO files or the method i used,
plese let me know. Please do a consistancy check (as in the above
example) before using the results.

Hope this helps,

Regards,

Jaison

On Fri, 3 Mar 2006, Ansley Manke wrote:

```
```Hi Seon,
Just a few ideas, since nobody's answered yet, I'd like to point you to
the discussions of @LOC and @WEQ, and also @EVNT in the Users Guide.
Also see "isosurface, example" in the Users Guide index The examples
under @WEQ should give you some ideas.

I haven't had time to think it through, but remember that you can use
variables z[gz=var], and k[gz=var] for the coordinates and the indices

Ansley

Seon Tae wrote:

```
```Hi all...

I have an upper ocean temperature data. I am trying to obtain
temperature at the grid points right below the MLD. Is there anyone to
help me with it?

Thank you very much in advance....!!

-Seon Tae-

```

Attachment: mld_jnls.tar
Description: Unix tar archive