Integrated hydrochemical modeling of an alpine watershed: Sierra Nevada, California. User`s guide to the University of Arizona, Alpine Hydrochemical Model (AHM) version 1.0.
Technical Report
·
OSTI ID:160983
This dissertation discusses the development and testing of a model capable of predicting watershed hydrologic and hydrochemical responses to these changes. The model computes integrated water and chemical balances for watersheds with unlimited numbers of terrestrial, stream, and lake subunits, each of which may have a unique, variable snow-covered area. Model capabilities include: (1) tracking of chemical inputs from precipitation, dry deposition, snowmelt, mineral weathering, baseflow or flows from areas external to the modeled watershed, and user-defined sources and sinks, (2) tracking water and chemical movements in the canopy, snowpack, soil litter, multiple soil layers, streamflow, between terrestrial subunits (surface and subsurface movement), and within lakes (2 layers), (3) chemical speciation, including free and total soluble species, precipitates, exchange complexes, and acid-neutralizing capacity, (4) nitrogen reactions, (5) a snowmelt optimization procedure capable of exactly matching observed watershed outflows, and (6) modeling riparian areas.
- Research Organization:
- Arizona Univ., Tucson, AZ (United States). Dept. of Hydrology and Water Resources
- OSTI ID:
- 160983
- Report Number(s):
- PB--96-118542/XAB; HWR --92-040; CNN: Contracts CARB-A732-035, NAGW-2062
- Country of Publication:
- United States
- Language:
- English
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