soil_text_init Subroutine

subroutine soil_text_init(isol)

~ ~ ~ PURPOSE ~ ~ ~ this subroutine initializes soil parameters based on awc

~ ~ ~ INCOMING VARIABLES ~ ~ ~ name |units |definition ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ddrain(:) |mm |depth to the sub-surface drain i |none |HRU number rock(:) |% |percent of rock fragments in soil layer ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ OUTGOING VARIABLES ~ ~ ~ name |units |definition ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ rock(:) |none |exponential value that is a function of |percent rock sol_st(:,:) |mm H2O |amount of water stored in the soil layer |on any given day (less wp water) ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ SUBROUTINES/FUNCTIONS CALLED ~ ~ ~ Intrinsic: Exp, Sqrt SWAT: Curno

~ ~ ~ ~ ~ ~ END SPECIFICATIONS ~ ~ ~ ~ ~ ~

determine detached sediment size distribution typical for mid-western soils in USA (Foster et al., 1980 0 Based on SWRRB Sand fraction Silt fraction Clay fraction
Small aggregate fraction
Large Aggregate fraction

Error check. May happen for soils with more sand Soil not typical of mid-western USA The fraction wont add upto 1.0

Arguments