diff --git a/mlair/data_handler/data_handler_wrf_chem.py b/mlair/data_handler/data_handler_wrf_chem.py
index 1da8614338f8f6497a344b8194c08fe4e44080de..50bedd15a438dc9814085f9b5c5c70fb31a71bad 100644
--- a/mlair/data_handler/data_handler_wrf_chem.py
+++ b/mlair/data_handler/data_handler_wrf_chem.py
@@ -506,7 +506,10 @@ class DataHandlerSingleGridColumn(DataHandlerSingleStation):
 
     @TimeTrackingWrapper
     def extract_data_from_loader(self, loader):
-        data = loader.data.isel(loader.get_nearest_icoords()).squeeze()[self.variables]
+        data = loader.data.isel(loader.get_nearest_icoords()).squeeze(dim=[loader.logical_y_coord_name,
+                                                                           loader.logical_x_coord_name])[self.variables]
+        with ProgressBar():
+            data = dask.compute(data)[0]
         return data
 
     @property