Widespread nitrate contamination of groundwater in agricultural areas poses a major challenge to sustainable water resources. Efficient analysis of nitrate fluxes across large regions also remains difficult. This study introduces a method of characterizing nitrate transport processes continuously across regional unsaturated zones and groundwater based on surrogate, machine-learning metamodels of an N flux process-based model. The metamodels used boosted regression trees (BRTs) to relate mappable variables to parameters and outputs of a “vertical flux method” (VFM) applied in the Fox-Wolf-Peshtigo (FWP) area in Wisconsin. In this context, the metamodels are upscaling the VFM results throughout the region, and the...
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Fox River, Wisconsin,
Hydrogeology,
NAWQA,
National Water Quality Program,
Peshtigo River, Wisconsin, All tags...
USGS Science Data Catalog (SDC),
Water Quality,
Wisconsin,
Wolf River, Wisconsin,
cycle 3,
groundwater,
metamodel,
nawqa,
nitrate flux,
unsaturated zone,
water quality, Fewer tags
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