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About the Atmospheric and Environmental Systems Modeling Division

Related Information
  • Email: CEMM@epa.gov
  • About CEMM
  • About the Office of Research and Development (ORD)
  • Organization Chart for ORD

On This Page:

What We Do
Management
Branches
Main Office Location

 

What We Do

The Atmospheric & Environmental Systems Modeling Division (AESMD):

  • Conducts research to help EPA characterize processes that impact the transport, transformation, and fate of environmental contaminants in the air, and how they interact with the rest of the environment, in support of the Clean Air and Clean Water Acts;
  • Develops and uses modeling tools to help manage air quality at multiple scales, such as models that estimate the contributions of various air emission sources to air pollution and inform exposure and effects assessments;
  • Studies emission impacts from alternative energy pathways that can improve the cost-effectiveness of air quality management approaches and identify potential implications of energy system changes on air quality and other environmental media; and
  • Advances the science of atmospheric modeling tools to support robust air quality management policy decisions.

Relevant Research

  • The Community Multiscale Air Quality Modeling System (CMAQ)
  • Visual Environment for Rich Data Interpretation (VERDI)
  • Community-LINE Source Model (C-LINE) to estimate roadway emissions
  • Fertilizer Emission Scenario Tool
  • GCAM Long-term Interactive Multi-Pollutant Scenario Evaluator (GLIMPSE)

Management

Will Yelverton, Acting Director

  • Phone: 919-541-9737
  • Email: yelverton.will@epa.gov

Branches

Atmospheric Chemistry and Aerosol Branch

Branch Chief: Rob Pinder

Atmospheric Dynamics and Meteorology Branch

Branch Chief:  Wyat Appel

Emissions Systems Analysis Branch

Branch Chief: Jacky Rosati

Natural Systems Characterization Branch

Acting Branch Chief:  Wyat Appel

 

Main Office Location

US EPA ORD Center for Environmental Measurement and Modeling 
Atmospheric and Environmental Systems Modeling Division
109 T.W. Alexander Drive
Mail Code: E243-02
Research Triangle Park, NC 27709

About EPA

  • Our Mission and What We Do
  • Headquarters Offices
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  • EPA Organization Chart
  • EPA History
Contact EPA
Contact EPA to ask a question, provide feedback, or report a problem.
Last updated on June 16, 2025
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