Hi all,
It is likely that an answer is already on the ferret users archive, if so, just refer me to that page, but I could not find what I was looking for.
I have a monthly climatology, so 12 time steps. I would like to subtract the climatology off a 20 year monthly data set (of 240 time steps) to end with an anomaly with 240 time steps. How can I regrid the 12 climatologies to a 240 time step axis with the 12 months of the climatology just repeated 20 times.