CLIGEN 5.32.3

September 13, 2025

Source and Executables provided by:

Roger Lew University of Idaho

Jim Frankenberger
Computer Engineer
USDA-ARS National Soil Erosion Research Laboratory

Warning: No effort is made to ensure these resources are up to date. They are provided here solely for Roger's convenience. Please check the following url for updates:
http://fargo.nserl.purdue.edu/cligen532/ https://github.com/jfrankenberger/cligen5

This is the source code along with executables for Windows, Linux, and Apple Silicon macOS for CLIGEN version 5.32.x.
This version series has a few updates since CLIGEN 5.3:

• Cligen version 5.323 – 09/13/2025 (Roger Lew / Gemini AI)
  Corrected a bug in observed climate file generation (-O option) that caused an extra day to be appended to the output.
  This occurred when the input .prn file contained a partial final year.
  The day_gen subroutine now properly handles the end-of-file condition.

• Cligen version 5.322 – 09/10/2024 (Fred Fox)
  Corrected calculation of Coefficient of Variation so a zero monthly average temperature does not cause a divide by zero.
  Merged change from WEPS version 5.3004 (12/13/2018).

• Cligen version 5.32.1 – 04/06/2022
  Fixed leap year bug so that years where year % 100 == 0 are not considered leap years.
  (Did not rebuild Windows executable.)

• Cligen version 5.32 – 03/14/2013
  Using observed option (type=6), the tpeak variable was being generated based only on CLIGEN-predicted days with precip.
  Updated to ensure type 6 input has the same distribution of tpeak as generated precip.

• Cligen version 5.31 – 01/31/2013
  Corrected solar radiation (was not using standard deviations from input .par file).
  Increased year field to 5 digits for 10,000+ year runs.

• Cligen version 5.30002 – 09/14/2009
  Extended character string length for reading command line arguments to allow longer output path length on Linux.
  Paths should now allow as long as WEPS. Windows path length was already longer than maximum allowed.

• Cligen version 5.30001 – 06/30/2009
  Changed order of reading in wet/wet & wet/dry equivalence. Interleaving had made values incorrect.
  Affected only Yoder-Foster & Fourier interpolation.

There are also a couple updates to CLIGEN from the Wind Erosion Research (WEPS) group at Fort Collins that have not been merged into this version.
When these updates are combined, the program will be available from the CLIGEN website.

Repo contains:

• Prebuilt Windows Executable cligen532.exe (v 5.321)
• Prebuilt Linux Executable cligen532 (v 5.323)
• Prebuilt Apple Silicon Executable cligen532.arm64.mac (v 5.321)