fix sfx_esm to be the same as Term and INMCM version

srcF/sfx_esm_param.f90

@@ -23,7 +23,7 @@ module sfx_esm_param
       !< stability function coeff. (unstable) [= g4 & g10 in deprecated code]
       real, parameter :: alpha_m = 16.0
       real, parameter :: alpha_h = 16.0
-      real, parameter :: alpha_h_fix = 1.2
+      real, parameter :: alpha_h_fix = 16.0
 
       !< stability function coeff. (stable)
       real, parameter :: beta_m = 4.7