GSFLOW The model is developed by the U.S. Geological Survey to simulate the interaction between surface water and groundwater. The model considers the relationship between meteorological conditions, surface runoff, groundwater runoff and the interaction between surface water and groundwater. It is coupled with the rainfall runoff simulation system PRMs and the three-dimensional finite difference model modflow-2005. The model is suitable for the simulation of non spatial and temporal scales In order to evaluate the impacts of land use change, climate change and groundwater exploitation on surface hydrological process and underground hydrological process.

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.

IHACRES model is a lumped conceptual rainfall runoff model based on unit hydrograph principle. It is composed of two basic modules in series: in the nonlinear module, rainfall is transformed into effective rainfall; in the linear module, effective rainfall is further transformed into runoff. The model is suitable for a series of spatial and temporal scales.

Pism-pik model is developed by Potsdam Institute of climate impact to simulate large scale ice sheet shelf system. It comes from the parallel ice sheet model (bueler and brown, 2009). PISM v1.0 is open source with high resolution. Since 2011, it has been widely used as a tool for scientific research.

The bahm model is a tool to analyze the potential impacts of hydrological changes in land development projects and to grade structural solutions to mitigate the increased stormwater runoff in these projects. The software was developed in three counties in the San Francisco Bay Area: Alameda, San Mateo and Santa Clara.

Biome BGC model is a calculation program for assessing the energy, water, carbon and nitrogen flux and storage of vegetation and soil components of terrestrial ecosystems. The main purpose of this study is to study the interaction among global climate, disturbance and biogeochemical cycle. It represents the flux of energy and mass controlled by physical and biological processes.

Epic is a continuous simulation model used to study the long-term effects of various soil erosion factors on crop production. Epic is a public domain model for studying the impact of soil erosion on crop production in more than 60 countries in Asia, South America and Europe. The model is used to study soil erosion, economic factors, hydrological models, weather effects, nutrition, plant growth dynamics and crop management. The main components of the epic are weather simulation, hydrology, erosion deposition, nutrient cycling, pesticide fate, plant growth, soil temperature, farming, economy and plant environmental control. Epic assessed the impact of soil erosion on productivity and predicted the impact of management decisions on soil, water, nutrient and pesticide movement, as well as their combined effects on soil fertility and managed soil loss, water quality and crop yield.