Center hours at midnight

climax/main/preprocess/preprocess_OBS.py

@@ -10,6 +10,7 @@ import logging
 from logging.config import dictConfig
 
 # externals
+import numpy as np
 import xarray as xr
 
 # locals
@@ -83,6 +84,10 @@ if __name__ == '__main__':
             # rename temporal dimension: from DATE to time
             ds = ds.rename({'DATE': 'time'})
 
+            # center hours at 00:00:00 rather than 12:00:00
+            ds['time'] = np.asarray([t.astype('datetime64[D]') for t in
+                                     ds.time.values])
+
             # set NetCDF file compression for each variable
             for _, var in ds.data_vars.items():
                 var.encoding['zlib'] = True