APPLICATION OF VISUALIZATION TECHNOLOGY ON WATERSHED MODEL EVALUATION
Abstract:Conventional graphics such as plots from spreadsheet applications provide information to analyze model outputs from the Chesapeake Bay Watershed Model. Developments in scientific visualization technology and geographic information systems are applied as a supplemental analytical tool to visualize and evaluate watershed model results. Spatial and temporal development of model parameters can be effectively displayed through MPEG movies and GIS graphics. In this paper, daily Total Nitrogen (TN) loads from model segments in the James River Basin of the Chesapeake Bay Watershed are compared with daily precipitation as well as fertilizer and manure applications. Analysis shows that higher TN outputs are usually associated with storm events and fertilizer and manure applications.
Model outputs from the Base Case and the Limit of Technology nutrient management scenarios are analyzed to compare loads from the watershed to the estuary. Spatial and temporal variation of daily TN loads across the segments of the James River Basin are observed and compared for the two scenarios. Advances in scientific visualization of model output provide valuable comprehensive information for evaluation of the watershed model itself and evaluation of the effectiveness of nutrient management programs in reaching conservation goals.
Document Type: Research Article
Publication date: January 1, 2000
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