diff --git a/modules/deeplearning/cloud_fraction_fcn.py b/modules/deeplearning/cloud_fraction_fcn.py
index 3fcd6841f038d72b0efc046273be16795cd0ba16..9fd35a77a13583c4a96ea3c98e4fc24f9ebbdf8c 100644
--- a/modules/deeplearning/cloud_fraction_fcn.py
+++ b/modules/deeplearning/cloud_fraction_fcn.py
@@ -823,6 +823,7 @@ def run_evaluate_static(in_file, out_file, ckpt_dir):
 
     da = xr.DataArray(np.stack([cld_frac_out, bt, refl_avg], axis=0), dims=dims)
     da.assign_coords({
+        'num_params': var_names,
         'lat': (['y', 'x'], lats),
         'lon': (['y', 'x'], lons)
     })