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ATMOSPHERIC MODEL DEVELOPMENT
Contact
http://cfpub.epa.gov/si/si_public_comments.cfm
Impact/Purpose:
The objectives of this task are to continuously develop and improve EPA's mesoscale (regional through urban scale) air quality simulation models, such as the Community Multiscale Air Quality (CMAQ) model, as air quality management and NAAQS implementation tools. CMAQ is a multiscale and multi-pollutant chemistry-transport model (CTM) that includes the necessary critical science process modules for atmospheric transport, deposition, cloud mixing, emissions, gas- and aqueous-phase chemical transformation processes, and aerosol dynamics and chemistry. To achieve the advances in CMAQ, research will be conducted to develop and test appropriate chemical and physical mechanisms, improve the accuracy of emissions and dry deposition algorithms, and to develop and improve state-of-the-science meteorology models and contributing process parameterizations.
Description:
This task provides credible state of the art air quality models and guidance for use in implementation of National Ambient Air Quality Standards for ozone and PM. This research effort is to develop and improve air quality models, such as the Community Multiscale Air Quality (CMAQ) modeling system, a multiscale and multi-pollutant chemistry-transport model (CTM). Specific research components include: meteorological modeling, land-surface and PBL modeling, emissions modeling, gas phase mechanisms and solvers, cloud dynamics and aqueous chemistry, photolysis rates and radiative transfer model improvements, aerosol representations for grid models, transport and diffusion, plume-in-grid approach, CMAQ code integration and efficiencies, and OBM modeling.
This task utilizes high performance computing and scientific visualization resources provided by EPA's National Environmental Scientific Computing Center (NESC2).
Record Details:
Record Type:PROJECT
Start Date:10/01/2002
Completion Date:09/30/2004
Record ID:
56103
Keywords:
AIR QUALITY MODELING, ATMOSPHERIC CHEMISTRY, OZONE, FINE PARTICLES,Related Records:
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Project Information:
Progress :Meteorological fields based on MM5 were generated for the SOS-1999 field study domains for Nashville and Atlanta. (FY-02). (A)Meteorology-Chemistry Interface Processor (MCIP) Version 2 was re-engineered in Fortran 90 with significant new scientific features and capabilities. Released March 2002. (A)
MM5 Version 3 was upgraded to Release 5 and tailored with EPA modifications for air-quality modeling simulations. (FY-02) (A)
Pleim, J. E., and co-authors, 2002: Application of the Models-3 Community Multi-scale Air Quality (CMAQ) model system to SOS/Nashville 1999. Preprints, 12th Joint Conference on the Applications of Air Pollution Meteorology with the Air and Waste Management Association, American Meteorological Society, Norfolk, Virginia, 20-24 May 2002. (A)
Pleim, J. E., A. Xiu, P. L. Finkelstein, and T. L. Otte, 2001: A coupled land-surface and dry deposition model and comparison to field measurements of surface heat, moisture, and ozone fluxes. Water, Air, and Soil Pollution: Focus, 1 (5/6), 243-252. (A)
Schwede, D. B., S. K. LeDuc, and T. L. Otte, 2001: Using meteorological model output as a surrogate for on-site observations to predict deposition velocity. Water, Air, and Soil Pollution: Focus, 1 (5/6), 59-66. (A)
Otte, T.L., N.L. Seaman, and D.R. Stauffer, 2001: A heuristic study on the importance of anisotropic error distributions in data assimilation. Monthly Weather Review, 129, 766-783. (A)
MM5 Version 3 was upgraded to Release 4 and tailored with EPA modifications for air-quality modeling simulations. (FY-01). (A)
Xiu, A. and J. E. Pleim, 2001: Development of a land surface model, part I: Application in a mesoscale meteorology model. J. Appl. Meteor., 40, 192-209. (C)
Pleim, J. E., A. Xiu, P. L. Finkelstein, and T.L. Otte, 2001: A coupled land-surface and dry deposition model and comparison to field measurements of surface heat, moisture, and ozone fluxes, Water, Air, and Soil Pollution: Focus, 1, 243-252. (C)
The PX LSM with soil moisture indirect data assimilation and the ACM PBL scheme is in the latest NCAR release of MM5v3.5.3. (C)
The M3dry and ACM are in the 2002 release of CMAQ. (C)
During FY2002, we supported several enhancements to CMAQ's emissions modeling processor (SMOKE), including a new biogenic emissions processor (BEIS3). The Surface Exchange Vegetation (SEVE) database (formerly called BELD3) is now being used to process biogenic emissions within CMAQ. Preparation of a journal article discussing the development of the SEVE database is underway. In addition, substantial progress was made on new emission algorithms for fugitive dust, wildfires, and sea salt. (E)
Plan for the implementation of MOBILE-MEASURE for emission and air quality modeling, Collaboration with NRMRL (Benjey, 9/2002). (E)
Draft journal article on a model inversion study using the CMAQ model to estimate seasonal ammonia emissions across the eastern United States,(Gilliland, 6/2002). (E)
Benjey, W., 2002: The Global-Regional Climate-Air Quality Scale Continuum and GEIA Emission Database Directions, in Proceedings of the EPA Emissions Inventory Conference, Atlanta, Georgia, May 2002. (E)
Pierce, T., 2002: Intercomparison of Alternative Vegetation Cover Databases for Regional Air Quality Modeling, in Proceedings of the AMS 12th Joint Conference with AWMA on Applications of Air Pollution Meteorology, Norfolk, Virginia, May 2002. (E)
Pierce, T., 2002: Integration of the Biogenic Emissions Inventory System (BEIS3) into the Community Multiscale Air Quality (CMAQ) Modeling System, in Proceedings of the AMS 4th Urban Environment Symposium/12th Joint Conference with AWMA on Applications of Air Pollution Meteorology/25th Conference on Agricultural and Forest Meteorology, Norfolk, Virginia, May 2002. (E)
Complete initial testing of a Bayesian inverse modeling approach for air quality emission deduction, Person Responsible: A. G
Relevance :EPA and the states are responsible for implementing the National Ambient Air Quality Standards for ozone and PM. New standards for 8-hr average ozone and annual average PM2.5 concentrations are in the process of initial implementation. State Implementation Plans (SIPs) will be due to EPA in the 2007-2008 timeframe. Air quality simulation models, such as Models-3/CMAQ, are required components of the SIP analyses. The research performed in this task is designed to provide the necessary simulation capabilities for the Models-3/CMAQ air quality model, and to keep the science in the model at the state-of-the-art. This model, used for research and regulatory applications by the EPA, states, and others must have current up-to-date science for the highest level of credibility for the regulatory decision-making process.
Clients :Joe Tikvart -OAR/OAQPS
Project IDs:
ID Code :15171Project type :OMIS