[ncl-talk] space-time cross spectral analyses

[Xi Chang]

Hi Denis,

No, I meant a 2D FFT cross spectrum. I want to calculate the co-spectrum as
a function
of wavenumber and frequency as done by Randel and Held (1991):

Phase Speed Spectra of Transient Eddy Fluxes and Critical Layer
<http://journals.ametsoc.org/doi/pdf/10.1175/1520-0469(1991)048%3C0688%3APSSOTE%3E2.0.CO%3B2>

Chang,


On Mon, Feb 13, 2017 at 4:10 PM, Dennis Shea <shea at ucar.edu> wrote:

> Not sure of your semantics: "space-time cross spectral analyses"
>
> http://www.ncl.ucar.edu/Document/Functions/Built-in/specxy_anal.shtml
>
> http://www.ncl.ucar.edu/Applications/spec.shtml
> See Example 2
>
> On Mon, Feb 13, 2017 at 2:47 PM, Xi Chang <xi.chang01 at gmail.com> wrote:
>
>> Dear NCL users,
>>
>> Anybody has a suggestion or code to compute space-time cross-spectrum
>> between 2 variables? I need to have the co-spectrum output as a function
>> of "k and frequency".
>>
>> Thank you.
>> Chang.
>>
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk at ucar.edu
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20170213/ba3d2768/attachment.html