include file: C_HT_M 7
C*L-----------COMDECK C_HT_M FOR SUBROUTINE SF_EXCH----------              C_HT_M.2      
C Z10M  = height of 10m level for diagnostic calculations (m).             C_HT_M.3      
C Z1P5M = height of 1.5m level for diagnostic calculations (m).            C_HT_M.4      
      REAL Z10M,Z1P5M                                                      C_HT_M.5      
                                                                           C_HT_M.6      
      PARAMETER(Z10M  = 10.0,                                              C_HT_M.7      
     &          Z1P5M = 1.5)                                               C_HT_M.8      
C*----------------------------------------------------------------------   C_HT_M.9