diff --git a/experiment/meteo_france_data/scm_models_data/crocus/crocus_variables.py b/experiment/meteo_france_data/scm_models_data/crocus/crocus_variables.py
index 7b3296f136367b16f6cb34877cf3dbebdbfae599..f52943a3f274454a0bdfac65f865ec66740b980f 100644
--- a/experiment/meteo_france_data/scm_models_data/crocus/crocus_variables.py
+++ b/experiment/meteo_france_data/scm_models_data/crocus/crocus_variables.py
@@ -12,7 +12,7 @@ class CrocusVariable(AbstractVariable):
 
 class CrocusSweVariable(CrocusVariable):
     NAME = 'Snow Water Equivalent'
-    UNIT = 'kg per square meter'
+    UNIT = 'kg $m^{-2}$'
 
     @classmethod
     def keyword(cls):
diff --git a/experiment/meteo_france_data/scm_models_data/safran/safran_variable.py b/experiment/meteo_france_data/scm_models_data/safran/safran_variable.py
index a0c29dc6c3b4e327a1cf80bdbe53b8987e209a9e..cfdde8d3d504b1f2a1ff961208861a858b53104d 100644
--- a/experiment/meteo_france_data/scm_models_data/safran/safran_variable.py
+++ b/experiment/meteo_france_data/scm_models_data/safran/safran_variable.py
@@ -22,12 +22,14 @@ class SafranSnowfallVariable(AbstractVariable):
     """
 
     NAME = 'Snowfall'
-    UNIT = 'mm'
+    UNIT = 'kg $m^{-2}$'
+    # this could have been mm w.e (mm in water equivalent)
 
     @classmethod
     def keyword(cls):
         return 'Snowf'
 
+
     def __init__(self, variable_array, nb_consecutive_days=3):
         super().__init__(variable_array)
         self.nb_consecutive_days_of_snowfall = nb_consecutive_days
@@ -67,7 +69,6 @@ class SafranSnowfallVariable(AbstractVariable):
 
 class SafranRainfallVariable(SafranSnowfallVariable):
     NAME = 'Rainfall'
-    UNIT = 'kg per m2 or mm'
 
     @classmethod
     def keyword(cls):