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National Cryosphere Desert Data Center
Dhsvm model (Distributed Hydrology soil vehicle model)
Author: 
None
Tag continental

National Cryosphere Desert Data Center
Pensive model
Author:  USGS
Tag Spectral content Seismic waveform

National Cryosphere Desert Data Center
Precipitation Runoff Modeling System (PRMS)
Author: 
Tag

National Cryosphere Desert Data Center
FilmPC
Author:  U.S. Salinity Laboratory, Riverside, California

At present, the plastic tarpaulin used in soil fumigation process has been proved to be able to penetrate into the fumigation steam and cause obvious loss to the atmosphere. New low permeability membranes are being developed to reduce fumigant emissions and improve efficacy. A fast, reliable and sensitive method is needed to measure the permeability of various membranes that may be used in new management practices. Filmpc provides a method for estimating the mass transfer coefficient (H) of fumigants in agricultural films. H is a measure of diffusion resistance. Unlike other permeability measurement methods, h is an attribute of film chemical combination, independent of the concentration gradient of the whole film. The model relies on a mass balance method, and adsorption and diffusion are carried out on the membrane. The results show that this method produces a sensitive and reproducible method for measuring membrane permeability.

Tag Estimates the film permeability

National Cryosphere Desert Data Center
WEAP model (water evaluation and planning)
Author:  Stockholm Environment Institute's U.S. Center.

The challenge of freshwater management is becoming more and more common. The allocation of limited water resources between agricultural, urban and environmental uses requires a complete combination of water supply, water demand, water quality and ecological considerations. By integrating these elements, weap is committed to building a highly functional and operational integrated water resources planning system. WEAP model has the following characteristics:

Tag Integrated water resources planning system Freshwater management

National Cryosphere Desert Data Center
Pihm model (Penn State integrated hydraulic model)
Author: 

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.

Tag continental

National Cryosphere Desert Data Center
AgNPs model (agricultural non point source pollution model)
Author:  United States Department of Agriculture Agricultural Research Service

AgNPs model is a computer model developed by the Agriculture Bureau of the United States Department of agriculture, Minnesota pollution control bureau and natural resources protection bureau. It is used to simulate soil erosion and nutrient loss in small watershed, and to predict and evaluate agricultural non-point source pollution. It can not only predict the non-point source pollution load, but also analyze the risk and investment / benefit. The model consists of three parts: runoff simulation, the basis of non-point source pollution; sediment simulation, mainly reflecting the migration mechanism; and finally, pollutant simulation.

Tag small watershed GIS soil erosion

National Cryosphere Desert Data Center
ESAP-95
Author: 

Esap-95 software package contains a series of site salinity modeling software programs for analyzing and predicting soil salinity information. Esap-95 software package currently contains three software programs: esap-rssd, ESAP calibrate and ESAP saltmapper. The esap-rssd program is designed to produce the best results of soil sampling designs from bulk soil conductivity surveys. Esapcalibrate program is designed to estimate stochastic (regression model) and deterministic (soil) theoretical basis) calibration equations; i.e. These equations are eventually used to predict the spatial values of one or more soil variables, derived from electrical conductivity measurements. ESAP saltmappercheng program can be used to produce high-quality 1D or 2D graphics, output electrical measurement data or predict soil variables.

Tag soil salinity field scale spatial salinity

National Cryosphere Desert Data Center
PASSaGE Model
Author:  Michael S. Rosenberg & Corey D. Anderson

Spatial analysis is a basic component of scientific research, including ecology, evolution and environmental science, epidemiology, geology, geography and mathematics. Recent technological advances in genome sequencing, global positioning systems and remote sensing technology have led to a rapid expansion in the number and scale of spatial explicit data sets available for analysis. These new data extend the scope of spatial analysis to a wider range of human activities, but also rapidly surpass the capabilities of traditional spatial analysis software and methods.

Tag

National Cryosphere Desert Data Center
Hydrotrend model
Author: 
Tag climate-driven hydrological water balance and transport model Transport model Hydrological model

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