[ncl-talk] Getting dates when a specific contour line is within a region

[Lyndz]

Dear NCL-experts,

I am calculating the velocity potential using the attached script:
The U and V components of winds both have the following dimensions:

Dimensions and sizes: [time | 31] x [lat | 73] x [lon | 144]


I uploaded the files here:

https://www.dropbox.com/sh/t88oab9txej73u1/AAAkDCcsTC3_eHg8uBc0vhtda?dl=0



(a) Is it possible to get all of the dates whenever the *0 *contour line is
within the domain (100-130E,2-25N) of the plot using NCL? See attached plot
for the March 15 2020 case.


If possible, I would like to ask how to do this in NCL.


I'll appreciate any help on this.



Sincerely,


Lyndz
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