Tuesday, 2:00 PM in BR D (RICC)
(subject to change)
ReNuMa (Regional Nutrient Management model) is a lumped-parameter model estimating nutrient fluxes from aggregated areas of land use/land cover classes in response to net anthropogenic nitrogen inputs (NANI) at the scale of large watersheds. The model has been applied to 16 watersheds in the northeastern US to simulate dissolved nitrogen loads. Version 1.0 of the model was released in February 2007. Since then, several updates have been made to improve the accuracy of the model prediction and usefulness in investigating responses of nitrogen fluxes to watershed N inputs and management. Here we summarize some of those updates and their results, including: (1) incorporating topographic index (TI, a wetness index) to better capture spatial pattern of runoff generation and runoff N fluxes, and (2) using improved nitrogen deposition estimates based on output from the CMAQ atmospheric deposition model.
