ncdc logo title
ncdc_logo
  • Choose sorting options
  •    model title
  •    submit time
  •    update time
  •    browse times
  •    download times
  •    recommend times

National Cryosphere Desert Data Center
Impulse (model)
Author:  Hutton Eric

One dimensional River Stuart model
Tag random walk 1D Stream avulsion model Distribution of avulsion angles

National Cryosphere Desert Data Center
SPAW model (soil plant air water)
Author: 

The SPAW (soil plant air water) model simulates the daily hydrological and water budget of agricultural landscapes. There are two connected modules, one for farmland and the other for reservoirs such as wetland ponds, lagoons or reservoirs. The model was established to understand and predict agrohydrology and its interaction with soil and crop production. It can be applied to a variety of hydrological analyses, including: estimation of farmland runoff and leakage of agricultural farms, as well as the design and performance evaluation of water supply, waste management and water management of agricultural ponds, lagoons and reservoirs. The simulation results estimate daily vertical water budget depths for all major hydrological processes, including runoff, infiltration, evapotranspiration, soil moisture profile and seepage.

Tag Agricultural Hydrology Soil Water Wetlands Lagoons Ponds Reservoirs Crop Water

National Cryosphere Desert Data Center
MBL MEL model（multiple element limitation）
Author:  The Ecosystems Center
Tag

National Cryosphere Desert Data Center
Qual2k model
Author:  Steve Chapra

Qual2k is a one-dimensional comprehensive water quality model with multiple uses, which is widely used in water quality planning and management of rivers. It aims to represent a modern version of QUAL2E (or q2e) model (brown and Barnwell 1987). Q2k is similar to q2e in the following aspects:

Tag Biogeochemistry Water Quality

National Cryosphere Desert Data Center
Edys model (ecological dynamics simulation model)
Author:  Dr. David Price

The ecological dynamics simulation (edys) model is a general ecosystem simulation model based on machinery. It simulates changes in hydrology, soil, plants, animals, and watershed parts by natural and human intervention. It is a dynamic model that simulates hourly (for aquatic) or daily changes, from months to centuries. Edys has been used by federal and state agencies for a variety of ecological assessments,

Tag Climatic simulators Soil profile Herbivory Plant community dynamics Nutrient and contaminant cycles Hydrology

National Cryosphere Desert Data Center
Dhsvm model (Distributed Hydrology soil vehicle model)
Author:  Pacific Northwest National Laboratory,the University of Washington
None
Tag continental

National Cryosphere Desert Data Center
Simulator for Hydrologic Unstructured Domains, SHUD
Author:  Shu Lele
The hydrological unstructured domain simulator (shud) is a multi process, multi-scale model, in which the main hydrological processes are fully coupled by the finite volume method (FVM). Shud encapsulates the synthesis strategy of multi state distributed hydrological model by using the integral representation of basic physical process equations and state variables.
Tag

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
Dyresm model
Author: 

Dyresm (reservoir dynamics simulation model) is a one-dimensional hydrodynamic model used to predict the vertical distribution of temperature, salinity and density in lakes and reservoirs. The one-dimensional approximation is effective when the forces (wind stress, surface temperature drop or entrainment flow) that destabilize the water body do not work for a long time.

Tag lake DYnamic REservoir 1D

National Cryosphere Desert Data Center
PHREEQC Model
Author:  David Parkhurst

PHREEQC is a computer software (Parkhurst and appelo, 1999) for the calculation of various low-temperature hydrogeochemical reactions. PHREEQC, based on the ion linked water model, can (1) calculate the species and saturation index of matter formation; (2) simulate geochemical inversion process; (3) calculate batch reaction and one-dimensional migration reaction. In addition, PHREEQC coupled with multi-component solute transport model can generate PHAST, a three-dimensional reaction transport simulator for simulating groundwater flow system. PHREEQC is also useful in the investigation of unpolluted and polluted environment, laboratory, field and regional investigation. PHREEQC can investigate various natural and human influenced environmental geochemical reactions, including acid mine water discharge, radioactive waste isolation, pollutant migration, nutrient enrichment, aquifer natural and artificial restoration, aquifer reserve recovery, drinking water treatment, indoor experiment and regional aquifer system. PHREEQC has two graphical user interfaces available. Phreeqcl is a screen driven interface that provides a descriptive explanation for each data item (Charlton and Parkhurst, 2002). PHREEQC used in windows is a row editing object interface. Its additional input features enable it to generate graphic simulation results (post, 2004). 　
Tag Inverse modeling hydrologic model Inversion geochemistry Various low temperature hydrogeochemical reactions

©Copyright 2005-2020. Northwest Institute of Eco-Environment and Resources, CAS.

Donggang West Road 320, Lanzhou, Gansu, China (730000)