CDO

Hi,

I am trying to calculate the trend by using

cdo regres in.nc out.nc

But, I am getting a warning as

cdo    regres (Warning): Time increment in step 4 (10month) differs from step 1 (1month)! Set parameter equal=false for unequal time increments!

I could not understand the issue exactly. So, please provide some information on that.

Data can be found here: https://www.dropbox.com/s/4am59m7oubf2w9i/BC_JJAS.nc?dl=0

Thanks
Kunal