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.
3dade is a FORTRAN computer program, which is used to evaluate a series of analytical solutions of the three-dimensional convection dispersion equation. The analytical solution has stable unidirectional flow in porous media with uniform flow and transport characteristics. The transport equation includes the transport of solute by convection and dispersion, as well as solute delay, first-order decay and zero order production. The 3dade code can be used to directly solve some problems, that is, centralized calculation of time and space functions as specified model parameters, and indirect (inverse) problems, in which the program estimates the selected parameters by fitting one of the specified analytical solutions.
Gawser is a temperature index snow melting model which can be used to verify the hydrology of the basin. It is most suitable for agricultural or forest watersheds, but can be used to demonstrate the hydrology of other types of watersheds, such as urban or suburban water sheds. Gawser is suitable for basins with different development levels and can be used to show the impact of development on watershed hydrology. For example, in order to observe the hydrological impact of deforestation on agriculture, data can be used to simulate hydrological conditions in forest basins, and then reprogrammed to simulate hydrology in agricultural watersheds. We can study the behavior of runoff, infiltration, base flow and other hydrological conditions in each watershed.
Saltmod is a computer program used to predict soil moisture, salinity of groundwater and drainage, depth of groundwater table and drainage flow in irrigated farmland (hydrology), using different (GEO) hydrological conditions and their changing water management options, including groundwater irrigation and the use of some crop rotation schedules.
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.
Parflow is an open source, object-oriented and parallel watershed scale model. It includes a fully integrated land flow with the ability to simulate complex topography, geology and heterogeneity, as well as land surface processes including land energy budget, biogeochemistry, and snow (through CLM). It can run on multiple platforms. Parflow is the result of a long, multi agency development history and is now a collaboration between CSM, LLNL, uni Bonn and UCB. Parflow is combined with mesoscale, weather code ARPS and NCAR code WRF.