v11.5

January 2023

Water Quality — Silica Handling (Multi-algal Classes)

• mod_wq.f90: Silica settling flux (WQDFSI) now computed over all algal classes
  with ISILICA > 0, replacing the previous single-diatom lookup. Also extended the
  benthic flux computation for silica (WQDFSI) and phosphate (WQDFLP) to loop
  over all silica-active classes.
• mod_zoopl.f90: Zooplankton silica-fraction (FRSI) now sums over all algal
  classes with ISILICA > 0.
• mod_diagen.f90: Sediment diagenesis silica flux now loops over all silica-active
  algal classes in SMDFSI(L) rather than a single diatom.
• mod_wq_vars.f90: Deprecated SMDWQANC array (N:C ratio per algae) removed.
  DIATOM variable documented as deprecated.

Water Quality — Point Source Load Scaling

• mod_wq.f90: All water-quality point-source load rates (WQWPSL) are now
  multiplied by a time-step scaling factor PSMLMULTIPLIER in two-time-level
  (ISTL==3) mode. This corrects a systematic over-loading by point sources in
  two-time-level runs. Affects all 19 WQ constituents.

MPI / Output

• Mod_Map_Write_EE_Binary.f90: Improved Doxygen documentation for Map_Write_WSOUT,
  Map_Write_VELOUT, Map_Write_BCOUT, Map_Write_WCOUT, and
  Map_Write_SEDZLJOUT. Minor indentation fixes throughout.

Eutrophication

• mod_wq.f90: Removed legacy dual ISDYNSTP time branches; all timing now uses
  TIMESEC/86400. or TIMESEC/TCON. Time calculation for loading series
  interpolation similarly simplified.
• mod_wq.f90: Fixed OMP REDUCTION(+:IFLAG) for the thin-layer check loop.
• mod_wq.f90: Updated WQ loading format statements (110/111) to accommodate up to
  20 constituents.