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*.ops

Purpose

The six .ops files declared in type input_ops are parameter databases for the management operations that management.sch and the lum.dtl decision tables can invoke. Each file is a named list of parameter sets that other files reference by name.

All six readers follow the same structure: skip two header lines, count records, allocate, rewind, skip two, read one record per row into the corresponding *_db array.

Source

  • Readers: src/mgt_read_harvops.f90, src/mgt_read_grazeops.f90, src/mgt_read_irrops.f90, src/mgt_read_chemapp.f90, src/mgt_read_fireops.f90, src/mgt_read_sweepops.f90.
  • Type definitions: src/mgt_operations_module.f90.

File format

For every file:

  • Line 1: title (skipped).
  • Line 2: header (skipped).
  • Lines 3 and following: one record per operation. List-directed read. The reader counts records on a first pass, allocates the database array, rewinds, and reads the values.

The "Common" first column is the operation name; other files reference it.

harv.ops

Reader: mgt_read_harvops.f90 → harvop_db (type harvest_operation).

# Field Type Default Units Description
1 name char(40) "" none operation name
2 typ char(40) "" none grain, biomass, residue, tree, or tuber
3 hi_ovr real 0 none harvest index override at harvest
4 eff real 0 fraction harvest efficiency. Fraction of harvested yield removed; the remainder is left as residue
5 bm_min real 0 kg/ha minimum biomass required to allow harvest

graze.ops

Reader: mgt_read_grazeops.f90 → grazeop_db (type grazing_operation).

# Field Type Default Units Description
1 name char(40) "" none operation name
2 fertnm char(40) "" none manure name pointing into fertilizer.frt
3 manure_id int 0 none resolved id of fertnm in fertilizer.frt
4 eat real 0 (kg/ha)/day dry biomass removed by grazing per day
5 tramp real 0 (kg/ha)/day dry biomass removed by trampling per day
6 manure real 0 (kg/ha)/day dry manure deposited per day
7 biomin real 0 kg/ha minimum plant biomass to allow grazing

irr.ops

Reader: mgt_read_irrops.f90 → irrop_db (type irrigation_operation).

# Field Type Default Units Description
1 name char(40) "" none operation name
2 amt_mm real 25.4 mm application amount
3 eff real 0 none in-field application efficiency
4 surq real 0 fraction surface runoff ratio
5 dep_mm real 0 mm depth of application for subsurface irrigation
6 salt real 0 mg/kg total salt concentration in irrigation water
7 no3 real 0 mg/kg nitrate concentration
8 po4 real 0 mg/kg phosphate concentration

chem_app.ops

Reader: mgt_read_chemapp.f90 → chemapp_db (type chemical_application_operation).

# Field Type Default Units Description
1 name char(40) "" none operation name
2 form char(40) "" none solid or liquid
3 op_typ char(40) "" none spread, spray, inject, or direct
4 app_eff real 0 none application efficiency
5 foliar_eff real 0 none foliar efficiency
6 inject_dep real 0 mm injection depth
7 surf_frac real 0 fraction fraction in upper 10 mm of soil
8 drift_pot real 0 none drift potential
9 aerial_unif real 0 none aerial uniformity

fire.ops

Reader: mgt_read_fireops.f90 → fire_db (type fire_operation).

# Field Type Default Units Description
1 name char(40) "" none operation name
2 cn2_upd real 0 none change applied to SCS curve number II value
3 fr_burn real 0 fraction fraction of cover burned

sweep.ops

Reader: mgt_read_sweepops.f90 → sweepop_db (type streetsweep_operation).

# Field Type Default Units Description
1 name char(40) "" none operation name
2 eff real 0 none removal efficiency of the sweeping operation
3 fr_curb real 0 none availability factor: fraction of curb length that is sweepable

Example

refdata/Ames_sub1/harv.ops:

harv.ops written by SWAT+ editor v2.3.3 on 2023-10-25
name                  typ                hi_ovr        eff        bm_min
harv_grain            grain              0.0           1.0        0.0
harv_residue          residue            0.0           1.0        0.0

The other five files follow the same shape with their own column sets.

  • landuse.lum and management.sch reference operations by name.
  • *.dtl decision tables can fire operations by name.
  • fertilizer.frt provides the manure_id resolution target for graze.ops.