It looks like an extension of gaussian grids. We interpolate gaussian grids
to rectangular grids, because the CDM API for Grid assumes a rectangular
grid.
Assuming the interpolation is straightforward and not too time-consuming,
it shouldnt be a problem to support. Typically we would steal the ECMWF
code and port to Java. If you can find C code to interpolate octahedral
grids to rectangular, that would be helpful.
John
On Tue, Sep 29, 2015 at 1:19 AM, Martijn van der pauw <
martijnvanderpauw@xxxxxxxxx> wrote:
> Unfortunately, we don't have the exact specification from ECMWF yet, but
> as soon as we have it available I will send it to you. But, it's good to be
> aware the ECMWF model is going to switch to this in the next coming months.
> I did some searching and came to this document on the WMO website where
> they describe this octahedral grid.
>
>
> http://www.wmo.int/pages/prog/arep/wwrp/new/documents/16_Baldauf_numerical_methods.pdf
>
> As soon as I know more I will update you on this.
>
>
> 2015-09-28 22:34 GMT+02:00 Dennis Heimbigner <dmh@xxxxxxxx>:
>
>>
>> I assume you are using truncated octohedra so that it
>> is spacee filling.
>> So, I also assume that for specifying the 3-d grid,
>> it is sufficient to specify the parameters for a single
>> truncated octohedtron. Can you indicate what parameters
>> you use?
>> =Dennis Heimbigner
>>
>>
>> Martijn van der pauw wrote:
>>
>>> As ECMWF will use a octahedral grid to deliver their model issues in near
>>> future, I would like to know if NETCDF-java will support this grid type
>>> from the moment ECMWF will start using this?
>>>
>>> I think they will deliver this new grid starting somewhere early 2016.
>>>
>>> Martijn
>>>
>>>
>>>
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>
>
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