[CIG-MC] CitcomS, generating grd input file

[Thorsten Becker]

On Wed, Jun 18, 2014 at 11:55 PM, Hammond, Noah <noah_hammond at brown.edu>
wrote:

> Thank you.
>
> Can the ASCII file have 4 columns, (lat, lon, radius, temperature)? I am
> also required to install HC, is that right?
>
> no, the grids need to be separated by layer depth, netcdf can only handle
x-y grids. yes, you need to install HC for the grd handling capabilities.


> On a related note, the manual states that Mike Gurnis added the capability
> for CitcomS to use geographically dependent surface temperature boundary
> conditions. Can you explain how these conditions are implemented using grd
> files?
>

these are two different ways of specifying thermal and mechanical BCs. Mike
uses nodal locations, where the BCs are read in similar to what the code
outputs, node-by-node. i implemented the grd input. the latter is less well
documented, regrettably.


> Earlier you mentioned that geographically dependent basal heat flow
> boundary conditions are not possibly with this version of the code, but
> could a similar approach (using grd files) be used to implement a spatially
> dependent heat flux at the base?
>
> Yes, pretty easily. Either with grds or with nodal values.


> Thanks once more for your help!
>
>
> On Tue, Jun 17, 2014 at 3:52 PM, Hammond, Noah <noah_hammond at brown.edu>
> wrote:
>
>> In response to your reply:
>>
>> Yes I can use GMT.  Is the idea to use GMT to generate a grd file from an
>> ASCII file? What form should the ASCII file have? I am guessing it should
>> be a series of temperature values that correspond to each node, listed in
>> same order as the node ordering.
>>
>> For a full sphere, would there be just one grd file, or one for each
>> spherical cap?
>>
>> Thanks for the help!
>> -Noah Hammond
>>
>>
>> On Mon, Jun 16, 2014 at 3:24 PM, Hammond, Noah <noah_hammond at brown.edu>
>> wrote:
>>
>>> Can you direct me towards resources which describe how to generate grd
>>> files?
>>> I am using CitcomS 3.2.0 and would like to use tic_method=4, where the
>>> initial temperature is read from a grd file.
>>>
>>> Thank you for your time!!
>>> -Noah Hammond
>>>
>>
>>
>
> _______________________________________________
> CIG-MC mailing list
> CIG-MC at geodynamics.org
> http://lists.geodynamics.org/cgi-bin/mailman/listinfo/cig-mc
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.geodynamics.org/pipermail/cig-mc/attachments/20140619/6eb2c3f4/attachment.html>