Postdoctoral Research Associate, Biogeochemical Reactive Transport Modeling

Oak Ridge, Tennessee
competitive salary, full benefits, paid relocation, paid vacation, on-site fitness / wellness center
Oct 23, 2018
Nov 22, 2018
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Purpose: The Environmental Sciences Division at Oak Ridge National Laboratory is seeking a postdoctoral researcher to develop and evaluate novel multiscale models for reactive transport in stream corridors.

Major Duties and Responsibilities: You will work as part of a multidisciplinary team studying mercury transport and transformation processes in low-order streams. You will develop models for nutrient and contaminant dynamics in low-order streams, taking into account rate-limited mass transfer between the flowing streams and biogeochemically active transient storage zones. Working as part of a team, you will implement those models in advanced community software running on high-performance computing resources. A significant focus will be on comparing the models to column and flume experiments and to field observations in low-order streams.

Required Qualifications: A Ph.D. in hydrology, environmental sciences, geosciences, environmental or chemical engineering or a related field is required.  Basic understanding of mass transfer processes in the stream corridor and working knowledge of geochemical speciation modeling are required. Experience with multicomponent reactive transport modeling would be a distinct advantage, as would experience with modeling solute transport in the hyporheic zones of streams or rivers. Experience and demonstrated productivity with numerical models of complex phenomena in C/C++ or modern versions of Fortran is required, as is willingness to learn Python or similar scripting tools. You must work independently and collaboratively as part of a dynamic, multidisciplinary team.

Applicants must have received their most recent degree less than five years prior to the date of application and must complete all degree requirements before starting their appointment.

The appointment length will be up to 24 months with the possibility of an extension of up to 12 months.  Initial appointments and extensions are subject to performance and availability of funding.

For additional information please contact Scott Painter ( or visit