Modular ocean model (MOM) is a standard global ocean circulation model used by many researchers in the world. The origin of this model can be traced back to the community code originally developed by Kirk Bryan and Mike Cox in the 1960s, and many other global ocean models can be traced back to their origins. In the early 1990s, Ron pacanowski, Keith Dixon, and Tony Rosati redesigned the old code into a more modern format, while Steve griffies led the development of mom since 2000. However, mom is really a community code, and many people, both in gfdl and around the world, have made fundamental contributions to its successful development over the years.

HSPF (hydraulic simulation program - FORTRAN) model is a mathematical model developed by the U.S. Environmental Protection Agency (EPA). It is used for continuous simulation of hydrological and water quality processes in a large watershed under natural and artificial conditions. The model is written in FORTRAN language and based on Stanford hydrological model. It can comprehensively simulate runoff, soil loss, pollutant transport, river hydraulic and other processes, and is widely used in the scenario simulation of watershed water environment effects of climate change and land use change. The model is an excellent representative of semi distributed hydrological and water quality model, HSPF model is widely used in foreign countries. HSPF model includes perlnd, implnd and rchres to simulate the hydrology and water quality of permeable section, impervious section and surface water body respectively. Generally speaking, HSPF model plays an important role in the simulation of hydrology and water quality process in foreign countries, as well as scenario analysis involving climate change and land use impact, But the application of this model in China is very limited

Biosphere 3D is an open source project aimed at interactive landscape rendering based on Virtual Earth. The software system supports multiple scales, but it is mainly used to create realistic views from the line of sight level or near ground level. The software is released under the license of MPL and developed by lennal 3D for personal computers. Biosphere 3D was first released in 2007 by the visualization and data analysis department of the Zuse Institute in Berlin. Applications include landscape planning, landscape architecture, visual impact assessment, such as wind farms, power stations, land-use planning, archaeology, urban planning and forestry, enabling them to roam through landscape scenes or nearly reconstructed historical landscapes and gardens. Biosphere 3D, originally funded by the Federal Ministry of education and Research (Germany), was designed as a pure landscape visualization system in the "silvisio" of the R & D project.

LSPC is a watershed modeling system, including streamline hydrological simulation program FORTRAN (HSPF) algorithm, which is used to simulate hydrology, sediment and general water quality on land, as well as simplified river transport model. LSPC is derived from the mining data analysis system (MDAS) developed by the U.S. Environmental Protection Agency's zone 3, and is widely used in mining applications and TMDLs. A key data management feature of the system is that it uses Microsoft Access database to manage model data and weather text files to drive simulation. The system also includes a module to assist TMDL calculation and source allocation. For each model run, it will automatically generate a comprehensive text file output of the sub watershed for all layers, arrival and simulation modules, which can be represented at hourly or daily intervals. The output of the LSPC is associated with other model applications, such as EFDC, wasp, and - qual-w2. LSPC has no inherent limitations in modeling scale or model operation. The Microsoft Visual C + + programming architecture allows seamless integration with modern, widely used software such as Microsoft Access and excel.