[ES_JOBS_NET] ORISE Postdoc/graduate student opportunity at EPA in organic aerosol

Havala Pye havala.pye at gmail.com
Fri Jan 3 06:36:54 MST 2014

I have a research opportunity available for a student or postdoc during the
summer of 2014 to work on organic aerosol modeling at the EPA in Research
Triangle Park, NC. The candidate will work on aerosol formation from
low-volatility compounds (SVOCs/IVOCs, semivolatile POA, etc) or aerosol
produced through aqueous pathways (IEPOX uptake, etc) with a focus on how
experiments and data are translated to model-ready parameterizations and
frameworks. A full description and instructions on applying are available
through ORISE:
Participants will receive a monthly stipend. I plan to start reviewing
applications during the last week of January. Please encourage any
interested candidates with questions to contact me.  The project ID number
is EPA-ORD/NERL-AMAD-2013-05.



Havala Olson Taylor Pye, Ph.D.
Physical Scientist
National Exposure Research Laboratory
U.S. Environmental Protection Agency
Research Triangle Park, North Carolina

Phone: (919) 541-3557
Email: Pye.Havala at epa.gov

*Role of Non-Traditional Pathways in Organic Aerosol Formation, Research
Participation Program Office of Research and Development, National Exposure
Research Laboratory, U.S. Environmental Protection Agency, Research
Triangle Park, NC*


*Project Description:*

A postgraduate project training opportunity is currently available at the
U.S. Environmental Protection Agency (EPA) National Exposure Research
Laboratory (NERL). This appointment is in the Atmospheric Modeling and
Analysis Division (AMAD) located in Research Triangle Park, North Carolina.

AMAD is responsible for developing the science and algorithms that feed
into the Community Multiscale Air Quality (CMAQ,
http://www.epa.gov/amad/Research/RIA/cmaq.html) model. CMAQ simulates both
gas and aerosol-phase chemistry allowing for the prediction of ozone and
particulate matter with diameters less than 2.5 µm (PM2.5) in the ambient
atmosphere. The model functions as both a research tool and decision
support tool for air quality management plans.

Organic aerosol is a significant component of PM2.5 in the United States.
Traditionally, organic aerosols in models like CMAQ have been treated as
either primary (directly emitted) or formed due to reaction of gas-phase
volatile organic compounds. Since these types of models often fail to
reproduce observed concentrations in terms of the magnitude, diurnal
variation, and degree of oxidation, mechanisms for missing sources of
organic aerosol have been proposed. Two active areas of research include:
oxidation of low-volatility organic compounds and aqueous uptake pathways.

In collaboration with an AMAD mentor and other EPA team members, the
research participants may be involved in one or more of the following
training activities:

   - Comparing traditional and volatility basis set (VBS) predictions of
   aerosol from the CMAQ model
   - Examining the role of semivolatile and intermediate volatility organic
   compounds (S/IVOCs) in SOA formation including reconciling emission
   inventories of primary organic aerosol with model-ready inputs
   - Investigating the role of aqueous and in-cloud production of aerosol
   from soluble species such as isoprene epoxydiols (IEPOX) or glyoxal
   - Contributing to the 2015 public release of the next version of CMAQ

Through their activities, the research participants will gain an
understanding of how experimental laboratory and field data are used to
parameterize models, how to evaluate those parameterizations, and/or how
models are applied to solve research and regulatory questions. The research
participants will have latitude in exercising independent initiative and
judgment in the research commensurate with the level of training. The
research participants may attend division seminars as well as other EPA
presentations and may present the results of their research at scientific
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