[ES_JOBS_NET] Postdoc Position Open in Source Inversion Support-University of Maryland

Siyu Shan siyushan at umd.edu
Thu Jan 21 13:02:34 MST 2016

Postdoc in Source Inversion Support
University of Maryland

A position is available for a postdoctoral researcher interested in improving the source
attribution capabilities of the HYSPLIT model and performing meteorological
simulations for dispersion modeling projects. This postdoc would work with the
Transport Modeling & Assessment group at NOAA Air Resources Laboratory (ARL) in
College Park, Maryland.

The work includes:

(1) Improvement of source attribution calculations using HYSPLIT
ARL seeks to improve an approach to objectively and optimally estimate emission source
strengths based on field observations. Toward that end, ensemble HYSPLIT model
simulations will be performed and a cost function will be defined to quantify the model
and observation differences, weighted by the model and observation uncertainties.
Minimizing the cost function by adjusting source strength at the known source locations
to match the model predictions with the measured air concentrations determines the

(2) Meteorological and dispersion simulations
To better describe the mesoscale features in the modeling domain that influence
dispersion calculations, ensemble meteorological simulations need to be conducted using
the WRF-ARW with data assimilation, which incorporates observations through
objective analysis and various nudging strategies. This work will involve running the
ensemble WRF model at high resolution for several analysis periods and subsequently
running the HYSPLIT model.
Minimum qualifications for this work include: Ph.D. in atmospheric sciences or related
subject; proficiency running WRF; experience with transport and dispersion models such
as HYSPLIT; knowledge of Linux, Fortran, and scripting.
Interested applicants should send a cover letter, resume or CV and a list of three
references with contact information including mailing address, phone number and email
address to: aosc-jobs at umd.edu For best consideration apply by February 8, 2016,
however, applications will be accepted until the position is filled.

The University of Maryland, College Park, an equal opportunity/affirmative action employer, complies
with all applicable federal and state laws and regulations regarding nondiscrimination and affirmative
action; all qualified applicants will receive consideration for employment. The University is committed to a
policy of equal opportunity for all persons and does not discriminate on the basis of race, color, religion,
sex, national origin, physical or mental disability, protected veteran status, age, gender identity or
expression, sexual orientation, creed, marital status, political affiliation, personal appearance, or on the
basis of rights secured by the First Amendment, in all aspects of employment, educational programs and
activities, and admissions.

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