diff --git a/mlair/data_handler/data_handler_wrf_chem.py b/mlair/data_handler/data_handler_wrf_chem.py
index e5940934050cdbed51ded47d1f05f9140cf2811d..a93761b844c966fac04708b3e8cca4dbeab15a00 100644
--- a/mlair/data_handler/data_handler_wrf_chem.py
+++ b/mlair/data_handler/data_handler_wrf_chem.py
@@ -119,7 +119,7 @@ class BaseWrfChemDataLoader:
     def open_data(self):
         logging.debug(f'open data: {self.dataset_search_str}')
         data = xr.open_mfdataset(paths=self.dataset_search_str, combine='nested', concat_dim=self.time_dim_name,
-                                 parallel=True, decode_cf=False)
+                                 parallel=True)
         self._data = data
 
     def assign_coords(self, coords, **coords_kwargs):
@@ -372,7 +372,7 @@ class SingleGridColumnWrfChemDataLoader(BaseWrfChemDataLoader):
     def _set_nearest_icoords(self, dim=None):
         lat, lon = self.get_coordinates(as_arrays=True)
         with ProgressBar():
-            logging.info(f"SingleGridColumnWrfChemDataLoader: compute nearest icoordinates")
+            logging.info("SingleGridColumnWrfChemDataLoader: compute nearest icoordinates")
             self._nearest_icoords = dask.compute(self.compute_nearest_icoordinates(lat, lon, dim))[0]
 
     def get_nearest_icoords(self, as_arrays=False):
@@ -492,7 +492,7 @@ class DataHandlerSingleGridColumn(DataHandlerSingleStation):
             data = data.transpose(self.iter_dim, self.time_dim, self.target_dim, ...)
 
             with ProgressBar():
-                logging.info(f"{station} - DataHandlerSingleGridColumn.load_data: compute data for slice_prep")
+                logging.info("DataHandlerSingleGridColumn.load_data: compute data for slice_prep")
                 data = dask.compute(self._slice_prep(data, start=start, end=end))[0]
             # ToDo
             # data should somehow look like this:
@@ -720,7 +720,7 @@ class DataHandlerSectorGrid(DataHandlerSingleGridColumn):
 
                 sector_history = sector_history.assign_coords({self.target_dim: sector_history_var_names})
                 with ProgressBar():
-                    logging.info(f"{self.station}: compute `sector_history' for modify_history")
+                    logging.info(f"compute `sector_history' for modify_history")
                     sector_history = sector_history.compute()
 
             combined_history = xr.concat([self.history, sector_history], dim=self.target_dim)