News / APEX1501 update - March 2022

New updates include:

  • Simple non-linear rootzone percolation method (IPRK=1)
  • Richard's equation for rootzone unsaturated flow (IPRK=2)
  • New Landscape Wind Erosion method (WND_OP=1)
  • NRCS peakflow estimation using QPQ
  • Mass balance errors greater than 0.05% are printed in *.ERX
  • A number of errors are fixed
    • Issue with S-curve equation when b2 goes negative is resolved1.
    • Fixed print errors in *.MSA
    • The issue of automatic irrigation on perennial crops is fixed
    • Errors in output files fixed.
    • Mass balance (water/sediment/nitrogen) calculated in the *.out for the entire watershed is improved.
    • Error is fixed in the code regarding CHMX variable influencing soil erosion.
    • Error is fixed in the PHOENIX C/N method regarding CO2 respiration rate.
    • Errors in flood plain erosion and deposition calculation have been fixed
    • Water balance calculation is improved
    • Error in reading daily wind speed generated by weather generator is fixed
    • Error in reading values for missing data in *.dly is fixed
    • Errors in .OUT, .SUS, .STR on outputs including YP, YN, QP, QN due to the shift in internal handling of calculations from mass per unit to mass are fixed.
    • Output units error for QRF and WYLD in *.DWS is fixed
    • Paddy module is updated.
    • Error in grazing module (FFED input in the herd file having no influence to output) is fixed.
    • DWS output variables are incorrect in units. The error is fixed.
    • Header printing issue in SAD is fixed.
    • Errors in Izaurralde’s denitrification module are fixed.
    • Fixed a bug that resets IDNT to 2 when .OUT is on in the main
    • Mineral P in manure (WPMU) is added to WPML (soil mineral P) in QDRP/QRP calculation.
    • In *.ACY, OrgP output is fixed by correcting an error in the MASA array
    • The maximum number of daily weather stations is increased from 100 to 1000.
    • Subroutines related to wind erosion have been updated to fix excess amount of wind erosion.
    • Divide by zero error while computing Van Genutchen parameters is fixed in the Main.
    • Error is fixed in SPLA regarding SATC when a soil has only 1 soil layer.
    • Potential error (divided-by-zero) is fixed in BSUB line 526 where WLS gets zeroed after manure erosion.
    • Crop ID issue in TLOP causing the kill operation to be ignored is fixed.
    • The error with WPML leaching amount not subtracted from layer storage is fixed in NLCH

 

Download APEX1501