&SPECIES_PARAMS
 PSPECIES="HCHO",             ! Tracer name
 PWETA_GAS=8.38E-5,           ! Below-cloud scavenging (gases) - A (weta_gas) [Calculated accord to Asman (1995)]
 PWETB_GAS=0.62,              ! Below-cloud scavenging (gases) - B (wetb_gas) [Asman (1995)]
 PRELDIFF=1.3,                ! Dry deposition (gases) - D [Wesely (1989)]
 PHENRY=6.0E+03,              ! Dry deposition (gases) - Henrys const. [Wesely (1989)]
 PF0=0.0,                     ! Dry deposition (gases) - f0 (reactivity) [Wesely (1989)]
 PWEIGHTMOLAR=30.0,           ! molweight
 /
