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Denver, Colorado Arches National Park, Utah Grand Teton National Park, Wyoming
The IWDW has been fully supported by multiple federal and state agencies, with assistance from WESTAR-WRAP, since its creation through the 3SAQS Pilot Study. The IWDW provides air quality data, photochemical grid modeling products, and analysis tools to support various air quality applications. Available datasets include emissions inventories, meteorological data, air quality modeling platforms, and monitoring data.

WAQS Updates

2011b MODELING PLATFORM NOW AVAILABLE
WAQS CAMx/CMAQ
Meteorology, emissions, AQ modeling inputs and PGM modeling results can be requested from the IWDW Data Page.
DRAFT MPE REPORT
WAQS CAMx/CMAQ
DRAFT Model Performance Evaluation Report and Final Response-to-Comments
2011b Modeling Platform
FINAL MPE DOCUMENT
WAQS WRF
Final Model Performance Evaluation Report
2014 Modeling Year
SOURCE APPORTIONMENT MODELING SPEC. SHEET
WAQS CAMx
Specifications for Round 3 source apportionment modeling based on a "clean" CAMx simulation with U.S. anthropogenic emissions set to zero
2011 Modeling Year
MAY 6, 2016 TECHNICAL COMMITTEE MEETING
  • Documents for Review: 2011b Platform Release Memo; Technical Committee and Data Stewards Descriptions;
  • 2025 Modeling and Ozone and PM2.5 Design Value Projections;
  • 2011 Source Apportionment Modeling Results.

IWDW Highlights

NEW MAP BASED EMISSION REVIEW TOOL
  • Explore WAQS annual emissions inventories with a GIS based user interface;
  • Select state or county level pie chart breakdowns of individual pollutant emissions by source category.
ERT map view
ERT pie chart
MODEL-TO-OBS TOOL UPDATES
2011b modeling platform data are available on the IWDW Model-to-Observation Tool.
  • Compare AQ modeling results to observations from AQ and deposition networks;
  • Evaluate model performance during specific ozone or PM episodes.
SOURCE APPORTIONMENT RESULTS FOR THE 2011 MODELING YEAR
New visualization tools to explore WAQS Phase II Source Apportionment Modeling
  • Geographic SA modeling results for ozone and PM;
  • Source category-specific contributions including a virtual monitoring network;
  • Estimates of U.S. and N.A. background contributions.