gcycl Subroutine

subroutine gcycl()

Uses

  • proc~~gcycl~~UsesGraph proc~gcycl gcycl module~basin_module basin_module proc~gcycl->module~basin_module module~climate_module climate_module proc~gcycl->module~climate_module module~conditional_module conditional_module proc~gcycl->module~conditional_module module~maximum_data_module maximum_data_module proc~gcycl->module~maximum_data_module

~ ~ ~ PURPOSE ~ ~ ~ This subroutine initializes the random number seeds. If the user desires a different set of random numbers for each simulation run, the random number generator is used to reset the values of the seeds.

~ ~ ~ INCOMING VARIABLES ~ ~ ~ name |units |definition ~ ~ ~ OUTGOING VARIABLES ~ ~ ~ name |units |definition ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ idg(:) |none |array location of random number seed used |for a given process rndseed(:,:)|none |random number seeds. The seeds in the array |are used to generate random numbers for the |following purposes |(1) wet/dry day probability |(2) solar radiation |(3) precipitation |(4) USLE rainfall erosion index |(5) wind speed |(6) 0.5 hr rainfall fraction |(7) relative humidity |(8) maximum temperature |(9) minimum temperature |(10) generate new random numbers ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ LOCAL DEFINITIONS ~ ~ ~ name |units |definition ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ SUBROUTINES/FUNCTIONS CALLED ~ ~ ~ SWAT: Aunif

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

initialize random number seeds

assign new random number seeds shuffle random number for conditional probability assign random number for decision table conditional shuffle seeds randomly (Bratley, Fox, Schrage, p34) assign half-hour maximum rainfall seed to second array location for use in sub-daily pcp generator

Arguments

None

Calls

proc~~gcycl~~CallsGraph proc~gcycl gcycl aunif aunif proc~gcycl->aunif