CDO

Susmit Satpathy wrote:

I am using the cdo gp2sp operator to convert my data into the spectral space and would like to know how are the spectral coefficients are arranged.
So that I can segregate the data as:
Large scale (0-4)
Synoptic scale (5-9)
Small scale (10 onwards)

Hello,

The gp2sp operator in CDO (Climate Data Operators) converts data into the spectral space using a specific coefficient arrangement. The spectral coefficients generated by gp2sp follow a specific order. In this order, the low-frequency components, representing large-scale patterns, are located at the beginning of the coefficient array. As we move further along the array, the frequency increases, indicating synoptic-scale patterns. Finally, the high-frequency components, representing small-scale patterns, are found towards the end of the coefficient array. By understanding this arrangement, you can effectively segregate the data based on scale: large-scale coefficients correspond to indices 0-4, synoptic-scale coefficients correspond to indices 5-9, and small-scale coefficients start from index 10 onwards.

Thanks Rick!