[ncl-talk] power spectra for seasonal rainfall dataset

[Edwin Marco]

Hi Denis,

Thanks a lot.

I appreciate.

Edwin

On Thu, Feb 20, 2020 at 11:55 PM Dennis Shea <shea at ucar.edu> wrote:

> The *mjoclivar_7.ncl *script invokes the *mjo_spectra*
> <http://www.ncl.ucar.edu/Document/Functions/Diagnostics/mjo_spectra.shtml>
> procedure. This is a driver which computes and plots the seasonally
> averaged spectra. The seasonal spectra are internally calculated via the
> *mjo_spectra_season*
> <http://www.ncl.ucar.edu/Document/Functions/Diagnostics/mjo_spectra_season.shtml>
> function.
>
> The issue is that the data array:  precip(time,lat,lon ===> precip(3496,
> 1, 1)
> contains daily precipitation for March-April-May [MAM] only. for years:
> 1981-2018 [38 years].
>
> Each season is 92 days. So (38 years )*(92 days)= 3496 days.
>
> The *mjo_spectra* procedure and *mjo_spectra_season *function are
> expecting complete years not a concatenated series.
>
> I've attached a script and plot that performs segment averaging spectra
> from 38 segments of 92 days..
>
> HTH
> D
>
>
>
> On Thu, Feb 20, 2020 at 9:09 AM Edwin Marco via ncl-talk <
> ncl-talk at ucar.edu> wrote:
>
>> Hello NCL users,
>>
>> I am new to ncl, I was wondering if you could help me on how to go about
>> plotting power spectra for a specific rainfall season, let say, March-May
>> rainfall season. I have been trying to use
>> https://ncl.ucar.edu/Applications/Scripts/mjoclivar_7.ncl but I am
>> getting difficult on how I can customize  mjoclivar_7.ncl for my season of
>> interest. I am attaching my sample data for your help.
>> Edwin
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