transformation: from gridpoint to fourier coefficient
Added by Qiyun Ma over 2 years ago
Hi,
I met one question in transformation of one field from gridpoint to fourier coefficient:
cdo gp2fc ROS_1231-04.nc tt_t
In the original file (ROS_1231-04.nc), it has 51200 grid points.
However, after transformation, grids have been reduced to 34240.
I attached the files.
Does anybody know what's wrong with this? Or how can we keep the same resolution?
Best,
Qiyun
| ROS_1231-04.nc (26.8 MB) ROS_1231-04.nc | original data | ||
| tt_t (17.9 MB) tt_t | after gp2fc |
Replies (1)
RE: transformation: from gridpoint to fourier coefficient - Added by Ralf Mueller over 2 years ago
hi!
when going from a grid space into a frequency space I would never expect the same grid size. I even doubt that the term grid is appropriate for this.
For proper check of the coefficient, you might check the reverse transformation with fc2gp
cheers
ralf