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codes.bsn

This file contains control codes for the simulation of basin-level processes.

Field

Description

Type

pet

Potential evapotranspiration (PET) method

Numerous methods exist to calculate potential evapotranspiration. Three of the most widely-used ones are included in SWAT+, the Priestley-Taylor, Penman/Monteith, and Hargreaves equations. The codes for the three methods are listed in the table below. If a method other than Priestley-Taylor, Penman/Monteith, or Hargreaves is recommended for the area, in which the watershed is located, the user can calculate daily PET values with the recommended method and import them into SWAT+ (using pet in weather-sta.cli).

Code

Option

crack

Crack flow code

Code

Option

If crack = 1, the crack volume potential is controlled by in .

swift_out

SWIFT input file

Code

Option

rte_cha

Channel water routing method

There are two channel water routing methods available in SWAT+:

Code

Option

The user must be careful to define msk_co1, msk_co2 and msk_x in parameters.bsn when the Muskingum method is chosen.

nostress

Plant stress

Code

Option

carbon

Carbon routine

Code

Option

Papers Xuesong, Armen

lapse

Precipitation and temperature lapse rate control

Code

Option

uhyd

Unit Hydrograph method

Code

Option

The Unit Hydrograph method is only relevant when simulating at a sub-daily timestep and = 0.

tiledrain

Tile drainage equation code

Code

Option

Papers Daniel, Tássia

wtable

Water table depth algorithm code

Code

Option

soil_p

Soil phosphorus model

Code

Option

Vadas & White (2010)

gampt

Surface runoff method

Code

Option

qual2e

Instream nutrient routing method

Code

Option

gwflow

Flood routing

Code

Option