Advances in Linked Air Quality, Farm Management and Biogeochemistry Models to Address Bidirectional Ammonia Flux in CMAQ
Recent increases in anthropogenic inputs of nitrogen to air, land and water media pose a growing threat to human health and ecosystems. Modeling of air-surface N flux is one area in need of improvement. Implementation of a linked air quality and cropland management system is described, and a tool to facilitate estimation of fertilizer input information required by the air quality model is presented. Preliminary evaluation of the coupled system against observations indicates improved wet deposition estimates.
KeywordsSoil Moisture Fertilizer Application Rate Water Nitrogen Renewable Fuel Standard Farm Management System
Acknowledgments and Disclaimer
Although this work has been reviewed and approved for publication by the U.S. Environmental Protection Agency, it does not reflect the views and policies of the agency. FEST-C tool developed was performed by the UNC Institute for the Environment under Contracts EP-D-12-044 and EP-W-09-023.