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“FEST-C 1.0 for CMAQ Bi-directional NH3 Modeling and Apatial Allocator 4.1”
Citation:
Ran, L., E. Cooter, V. Benson, D. Yang, R. Gilliam, A. Hanna, AND W. Benjey. “FEST-C 1.0 for CMAQ Bi-directional NH3 Modeling and Apatial Allocator 4.1”. Presented at CMAS Conference, Chapel Hill, NC, October 28 - 30, 2013.
Impact/Purpose:
The National Exposure Research Laboratory (NERL) Atmospheric Modeling and Analysis Division (AMAD) conducts research in support of EPA mission to protect human health and the environment. AMAD research program is engaged in developing and evaluating predictive atmospheric models on all spatial and temporal scales for forecasting the air quality and for assessing changes in air quality and air pollutant exposures, as affected by changes in ecosystem management and regulatory decisions. AMAD is responsible for providing a sound scientific and technical basis for regulatory policies based on air quality models to improve ambient air quality. The models developed by AMAD are being used by EPA, NOAA, and the air pollution community in understanding and forecasting not only the magnitude of the air pollution problem, but also in developing emission control policies and regulations for air quality improvements
Description:
Accurate estimation of ammonia emissions in space and time has been a challenge in meso-scale air quality modeling. For instance, fertilizer applications vary in the date of application and amount by crop types and geographical area. With the support of the U.S EPA, we have developed an agricultural Fertilizer Emission Scenario Tool for CMAQ (FEST-C) to be used with the new CMAQ bi-directional option for estimating ammonia flux which was released last year. The FEST-C system contains three components: FEST-C interface, Environmental Policy Integrated Climate (EPIC) modeling system, and Spatial Allocator (SA) Raster Tools. The FEST-C interface is a Java-based interface which guides users through the simulation of daily fertilizer application information using the EPIC model. This information is a required input for CMAQ bi-directional NH3 modeling. The FEST-C Interface integrates WRF/CMAQ with EPIC through the current release of SA Raster Tools system. In addition, under the EPA’s support we have completed the land use processing tool which generates land use data to be consistently used across the WRF/CMAQ modeling system for bi-directional NH3 flux, biogenic emission, land surface fluxes, and dry deposition modeling. The goal of this presentation is to describe the FEST-C 1.0 system and SA 4.1 which we have just released through the CMAS. We will briefly demonstrate the use of the FEST-C system for 2001 and 2006 fertilizer simulations on the CMAQ CONUS 12km domain (see presentation by Cooter et al. for more details in different domain applications). We will also demonstrate the use and applications of the SA 4.1 land use tool for WRF/CMAQ modeling