The Water, Energy, and Biogeochemical Model (WEBMOD): A TOPMODEL application developed within the Modular Modeling System

作者：Richard M. T. Webb, David M. Wolock, Joshua I. Linard, Michael Wieczorek · 发表于：AGUFM · 年份：2004 · 被引用次数：5 · 研究领域：Groundwater flow and contamination studies、Hydrology and Watershed Management Studies、Groundwater and Isotope Geochemistry

WEBMOD simulates hydrologic fluxes and solute concentrations using process modules coupled within the United States Geological Survey (USGS) Modular Modeling System (MMS). For example, the hydrologic fluxes are simulated using routines developed for the USGS Precipitation Runoff Modeling System, the National Weather Service Hydro-17 snow model, and TOPMODEL, a topography-based hydrological model. PHREEQC, a lowtemperature aqueous geochemical model, was incorporated to simulate chemical reactions as waters evaporate, mix, or react with the soils. Modifications to several modules were made to simulate the heterogeneity in vertical infiltration rates, irrigation practices, lateral and vertical preferential flows through the unsaturated zone, tile-drains, and gains and losses to regional aquifer systems. This paper describes the WEBMOD algorithms that simulate these reservoirs and fluxes.