diff --git a/aeolis/threshold.py b/aeolis/threshold.py
index c4bc2e84..db8f688d 100644
--- a/aeolis/threshold.py
+++ b/aeolis/threshold.py
@@ -238,22 +238,6 @@ def compute_moisture(s, p):
     
     return s
 
-def dry_layer(s, p):
-
-    Tdry_top = 12. * 3600.
-    zdry_max = 0.05
-
-    s['dzdry'] = (zdry_max - s['zdry']) * (p['dt_opt'] * p['accfac'])  / Tdry_top + s['dzb'] 
-    s['zdry'] += s['dzdry']
-    s['zdry'] = np.minimum(np.maximum(s['zdry'], 0), zdry_max)
-
-    ix = (s['zdry'] == 0.)
-    
-    s['uth'][ix] = np.inf
-
-
-    return s 
-
 
 #REMOVE?? CH
 # def compute_humidity(s, p):