From accumulative value to absolute daily value
Added by jay qiu over 6 years ago
Hi,
I have a cumulative rainfall dataset, now I would like to find the average rainfall of each month of each grid point in this dataset,
I have try "timselavg" and "timeselmean", and the output seems like not accumulative value but i don't know the output is correct or not
is there any operator can do something like 2nd_day_value - 1st_day_value = real_2nd_day_value
then I can use "monmean" to find what I want
Thanks,
Jay
Replies (1)
RE: From accumulative value to absolute daily value - Added by Ralf Mueller over 6 years ago
hi Jay!
My recommondation is:
1. You just drop the first timestep in your input
cdo delete,timestep=1 input.nc substractRight.nc
2. You drop the last timestep of your input
cdo delete,timestep=$(cdo ntime input.nc) input.nc substractLeft.nc
3. you substract them
cdo -sub substractLeft.nc substractRight.nc realValues.nc
hth
ralf