[ncl-talk] 4 sub-blocks of a 3D matrix in satellite data

Dennis Shea shea at ucar.edu
Tue Oct 11 20:46:37 MDT 2016


TES-Aura satellite data for HDO:

Not sure what to say.  We have not seen these files. Certainly, I have not
read any documentation. Does the indexing in the documentation you read say
it is 1- or 0-based?



On Tue, Oct 11, 2016 at 4:27 PM, Yang, Xiaoxin <yang.1143 at osu.edu> wrote:

> Dear all,
>
> I’m processing the TES-Aura satellite data for HDO, but could not figure
> out the structure of the 4 sub-blocks of a 3D matrix, i.e.,
> averagingkernel(grid-targets*grid_pressure_composite*grid_pressure_composite).
>
>
>
>
> As is stated in the guide, the averagingkernel consists of 4 sub-blocks of
> the matrix [0,0],[1,0],[0,1] and [1,1]. Subblock [0,0] ranges from indices
> ns to 16, and subblock[1,1] ranges from indices 17+ns to 33…
>
>
>
> Should it be something like this?
>
>
>
> ak=F->AveragingKernel(vid,:,:) ; vid means valid observation meeting
> certain criteria
>
> ak at _FillValue = -999
>
> ;averaging kernel for HDO
>
> Add = ak(:,ns:16,ns:16)
>
>
>
> But the result of the corrected HDO using this averaging kernel does not
> seem right. Hope you would offer me more suggestions on this.
>
> Thank you very much.
>
> Best,
>
> Xiaoxin
>
>
>
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