*ID H3DBQLIM
*/
*/  copied from ~t20db/um_mods1/h3dbqlim  18/3/96
*/ Lower limit on specific humidity.
*/
*DECLARE FILL3A
*D FILL3A.150
      PARAMETER(H2OLMN=2.5E-6)
*D FILL3A.206
            GAS_MIX_RATIO(L, I, IUMP_H2O)
     &         =MAX(H2O(LG, NLEVS+1-I), H2OLMN)