import xarray as xr
import sys


ifile = sys.argv[1]
ofile = ifile.replace('merge', 'merge_hourly')

ds = xr.open_dataset(ifile)
ds = ds.rename({'precipitationCal':'PREC'})
ds = ds.resample(time='H').sum()
print(ofile)
ds.to_netcdf(ofile)