1. Improving an Air Quality Decision Support System through the Integration of Satellite Data with Ground-Based, Modeled, and Emissions Data Demonstration Application with CMAQ
Sarav Arunachalam and Uma Shankar
Institute for the Environment
University of North Carolina at Chapel Hill
Presented at the
NASA ROSES DSS Design Workshop
Cooperative Institute for Research in the Atmosphere
Ft Collins, CO
May 12-13, 2008

2. Developed under the community modeling paradigm
Modular, One-atmosphere, Portable
Integrated one-atmosphere treatment of tropospheric O3, acid deposition, visibility, fine PM, toxics, mercury
Extensively used and evaluated by the scientific as well as regulatory community
Bi-annual external peer-reviews to advance state-of-the science in the model
CMAQ Version 4.6 released in Fall 2006
Version 4.7 expected in Fall 2008
Requires inputs from emissions and meteorology models, ICs and BCs
CMAQ = Chemical Transport Model + preprocessors
UNC hosts the Center for Community Modeling and Analyses System (CMAS)
CMAS provides support, outreach and training of CMAQ for a worldwide user community

3. CMAQ Demonstration Application for DSS
Model year: 2006 or later to take advantage of OMI (2004+) and CALIPSO (2006+) measurements
EPA currently developing 2006/2007 annual application
Committed to sharing inputs and outputs for project team
Continental U.S. modeling domain at 36-km horizontal grid resolution
Emissions estimates from EPA’s National Emissions Inventories (NEI) 2005
Will probably be updated for the 2006/2007 model year
Future year emissions scenarios (2018, 2020, ?)

4. Modeling Domain for CMAQ

5. Enhancements in CMAQ Application
Improve lateral and vertically varying boundary conditions for CMAQ using 2007 satellite data
Replace fire emissions estimates in NEI using refined estimates from Fire Scenario Builder / Bluesky-EM models (Shankar et al, 2006)
Evaluate CMAQ model performance against 3-D satellite measurements
Closely interact with UMBC personnel for proper interpretation of satellite data

6. Atmospheric Model Evaluation Tool (AMET) Enhancements
EPA developed AMET to evaluate CMAQ, MM5 and WRF against surface measurements (Gilliam et al, 2005)
AQ networks include AQS, CASTNet, STN, IMPROVE, SEARCH
Meteorological data from NOAA’s Meteorological Assimilation Data Ingest System (MADIS)
AMET has 3 main components
Observation-model matching module (perl)
Relational database module (MySQL)
Statistical (and graphical) analysis module (R )
UNC has recently integrated meteorological and air quality components of AMET into a single package
We will enhance AMET to include capability to process satellite measurements for DSS

8. Sample Outputs from AMET

9. Questions / Discussion