variable time shift

[arfriedman]

Hi,

In addition to integer offsets, I was wondering if it is possible to shift a variable by a specific time frequency interval as in pandas.

For example, something like:

import xarray as xr
ds = xr.tutorial.load_dataset("air_temperature")
air = ds["air"]
air.shift(time="1D")

Otherwise, is there another xarray function or recommended approach for this type of operation?