new_contents: import numpy as np
  
  from xmitgcm import open_mdsdataset 
  
  dir0 = '/homedata/bderembl/runmit/test_southatlgyre3'
  i = 0
  
  while (i < 423360):
      i = int(i+2160)
      print(i)
      if (i > 1000) and (i < 9999):
          ds1 = open_mdsdataset(dir0,iters=i,prefix=['Eta'])
          ds1['Eta'].to_netcdf('ETA_Surface_Height_Anomaly-'+'00'+str(i)+'.nc')  
      elif (i > 10000 ) and (i < 99999):
          ds2 = open_mdsdataset(dir0, iters=i,prefix=['Eta'])
          ds2['Eta'].to_netcdf('ETA_Surface_Height_Anomaly-'+'0'+str(i)+'.nc')
      else:
          ds3 = open_mdsdataset(dir0, iters=i,prefix=['Eta'])
          ds3['Eta'].to_netcdf('ETA_Surface_Height_Anomaly-'+str(i)+'.nc')
  
subject: Create A_Conversion_ETA_netCFD.py