Ice and ACE were developed by the U.S. Environmental Protection Agency in collaboration with other federal agencies, industry and universities to address data gaps in species sensitivity and reduce reliance on uncertainties in ecological risk assessment.

The partmc model is developed to simulate the evolution of aerosol particles in the atmosphere. Atmospheric aerosol particles are usually composed of complex mixtures of different chemical species, ranging in size from a few nanometers to tens of microns. Partmc model is very suitable for particle analysis because it can solve the whole synthesis space explicitly without any prior assumption of particle composition. Since the composition of each particle determines the optical properties of aerosols and the ability to form cloud droplets, these details are very important for determining the impact of aerosols on climate.

Sicopolis model is a three-dimensional dynamic / thermodynamic model, which simulates the evolution of large ice sheet and ice sheet. It was originally created by Greve (1997A, b) in a version of the Greenland ice sheet. Since then, sicopolis models have been developed and applied to the past, present and future glaciers of polar ice caps in Greenland, Antarctica, the entire northern hemisphere, Mars and elsewhere.

Geosfm hydrological model is studied by the center for earth resources observation and Science (EROS) of the U.S. Geological Survey (USGS). Its biggest feature is that the satellite remote sensing precipitation products can be directly used as the driving parameters of the model. The geosfm hydrological model has been applied to the Nile River Basin in Africa, Mekong River in Asia and bagmati River Basin in Nepal. Geosfm can create a common visual environment to monitor hydrogeological conditions in a wide range of areas, including topographic analysis, data assimilation and time series processing, and display the monitoring results.

Unsoda v2.0 is a database of unsaturated soil hydraulic properties completed by the U.S. geotechnical office in 1999. It collects the data of soil physical properties such as water characteristic curve, hydraulic conductivity and soil water dispersion, particle size distribution, bulk density and organic matter content of 11 different texture soils from sandy soil to clay.