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Current and estimated future atmospheric nitrogen loads to the Chesapeake Bay Watershed
Citation:
Bash, J., K. Hinson, P. Campbell, N. Possiel, T. Spero, AND Chris Nolte. Current and estimated future atmospheric nitrogen loads to the Chesapeake Bay Watershed. Chesapeake Bay Program Modeling Quarterly Review, Annapolis, MD, July 25, 2017.
Impact/Purpose:
The National Exposure Research Laboratory (NERL) Computational Exposure Division (CED) develops and evaluates data, decision-support tools, and models to be applied to media-specific or receptor-specific problem areas. CED uses modeling-based approaches to characterize exposures, evaluate fate and transport, and support environmental diagnostics/forensics with input from multiple data sources. It also develops media- and receptor-specific models, process models, and decision support tools for use both within and outside of EPA.
Description:
Nitrogen deposition for CMAQ scenarios in 2011, 2017, 2023, 2028, and a 2048-2050 RCP 4.5 climate scenario will be presented for the watershed and tidal waters. Comparisons will be made with the 2017 Airshed Model to the previous 2010 Airshed Model estimates. In addition, atmospheric deposition solely from CMAQ for wet and dry deposition will be compared to the 2017 Airshed model combining the regression of wet deposition and the CMAQ for dry deposition in order to anticipate the best approach for future CBP airshed models.