diff --git a/lib/xmet/thermo.py b/lib/xmet/thermo.py
index a98e101..5d9e5aa 100644
--- a/lib/xmet/thermo.py
+++ b/lib/xmet/thermo.py
@@ -122,7 +122,7 @@ def loft_parcel(start_temp: float,
             except OverflowError:
                 break
 
-            temp = lapse(temp, height - last_height, rate)
+            temp = lapse(temp, height - last_height, 1.08*rate)
 
             yield temp, pressure