Thresh model is a precipitation tracking program, which is used to calculate various precipitation indexes to compare with the existing or experimental threshold of landslide occurrence. The program calculates the cumulative precipitation, precipitation intensity and precipitation duration, and compares the results with the threshold value to determine the threshold value used in landslide early warning. This command-line program is used with Python and shell scripts for input files and visualization results.

The common land surface model was developed by scientists interested in land model for public use and further development. The main characteristics of the model include sufficient non-uniform interlayer to fully represent soil temperature and soil moisture, and multi-layer parameterization of snow process; clear treatment of liquid water and ice water quality in snow soil system; runoff parameterization under the concept of topmeod; a canopy photosynthetic conductivity model, which describes the simultaneous transfer of carbon dioxide and water vapor in plants; and a model of canopy photosynthesis conductivity; The sub grid fraction of energy and water balance is tiled. CLM has been widely evaluated in offline mode and coupled with the NCAR community climate model (CCM3).

WOFOST is a single site simulation system developed by Wageningen University in the Netherlands. A dynamic interpretative model based on process was developed to simulate crop growth process under the influence of climate and other environmental factors (such as soil water and fertilizer), such as photosynthesis, respiration, transpiration, leaf area change, dry matter distribution and yield formation. The model can simulate crop growth process and crop yield under three conditions: sufficient water and fertilizer supply (potential growth condition), water limitation (rain fed condition) and nutrient limitation (insufficient supply of N, P, K).