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).
Topoflow is a powerful and spatially distributed hydrological model with a user-friendly click interface. Its main purpose is to simulate many different physical processes in a watershed, and its goal is to accurately predict how various hydrological variables will evolve in response to climate forces.
Pihm is a physical model of land surface and groundwater, closely coupled to GIS interface. Pihmgis is open source, platform independent and extensible. Through the development of shared data model and hydrological model data structure, the close coupling between GIS and model is realized.
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.
Ecohat system is based on the study of eco hydrological process mechanism, starting from the basic water cycle process, adding nutrient migration and transformation process in the water cycle process, comprehensively considering the interaction of vegetation / biological growth, water cycle elements and nutrients in land water ecosystem. The ecohat system model is built on the basis of integrating the advantages of eco hydrological process models with physical and chemical mechanisms at home and abroad. After model adjustment, the model adopts parameters suitable for China's natural conditions to establish a localized database. Ecohat system realizes pixel based model operation by inputting regional spatial grid parameters. Therefore, ecohat system is a completely distributed integrated simulation system of eco hydrological process. Ecohat system includes four parts: water cycle, nutrient cycle, plant growth and aquatic environment response. Water cycle is the core of the system and runs through the other three parts. The simulation of water cycle in ecohat system includes five processes: rainfall infiltration, surface runoff, evapotranspiration, root water absorption and soil moisture; nutrient cycle mainly includes the simulation of nitrification, denitrification and ammonia volatilization in soil, the simulation of base cation cycle in soil, and the quantitative simulation of adsorbed phosphorus produced by soil erosion process; plant growth It includes vegetation ecological water use simulation, vegetation NPP (net primary productivity) simulation, productivity distribution process simulation and vegetation nutrient element absorption simulation.
SPARE:WATER It is a spatial decision support system for estimating water consumption of agricultural production system. It is a stand-alone software application that integrates a database for mathematical models and graphical user interfaces (GUIs) for estimating crop water requirements. The software realizes the function of GIS, which is used to manage spatial data based on open source spatial database.
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.