CCPP Scidoc for SRW v2.1.0  SRW v2.1.0
Common Community Physics Package Developed at DTC

◆ frh2o()

subroutine gfssflx::frh2o ( real (kind=kind_phys), intent(in)  tkelv,
real (kind=kind_phys), intent(in)  smc,
real (kind=kind_phys), intent(in)  sh2o,
real (kind=kind_phys), intent(in)  smcmax,
real (kind=kind_phys), intent(in)  bexp,
real (kind=kind_phys), intent(in)  psis,
real (kind=kind_phys), intent(out)  liqwat 
)

New version (June 2001): much faster and more accurate Newton iteration achieved by first taking log of eqn cited above – less than 4 (typically 1 or 2) iterations achieves convergence. Also, explicit 1-step solution option for special case of paramter ck=0, which reduces the orginal implicit equation to a simpler explicit form, known as the "flerchinger eqn". Improved handling of solution in the limit of freezing point temperature t0.

Referenced by module_sf_noahmplsm::phasechange(), and snksrc().

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