include file: DELTHST 4
*IF DEF,A05_2A,OR,DEF,A05_2C,OR,DEF,A05_3B,OR,DEF,A05_3C                   AJX1F405.125    
      REAL DELTHST  !  DIFFERENCE IN POTENTIAL TEMPERATURE BETWEEN         DELTHST.3      
                    !  LEVELS ABOVE WHICH THE ATMOSPHERE IF ASSUMED        DELTHST.4      
                    !  TO BE TOO STABLE TO CONVECT (K)                     DELTHST.5      
      PARAMETER (DELTHST = 1.5)                                            DELTHST.6      
C                                                                          DELTHST.7      
*ENDIF                                                                     DELTHST.8