Atmospheric Transport and Dispersion Modeler - Staff Scientist

Mid-Senior Level | Full-time
Physical Life Sciences | Livermore, CA | 10/15/2026
Reference #: REF
9006N
Job Code: SES.
2 Science & Engineering MTS 2 / SES.
3 Science & Engineering MTS 3
Organization: Physical and Life Sciences
Position Type: Career Indefinite
Security Clearance: Anticipated DOE Q clearance (requires U.S. citizenship and a federal background investigation)
Drug Test: Required for external applicant(s) selected for this position (includes testing for use of marijuana)
Medical Exam:
Not applicable

Join us and make YOUR mark on the World!

Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability.

Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact.

We have an opening for an Atmospheric Scientist and Modeler to work on consequenceassessmentinresponse to the dispersal of hazardous material. This position will be part of amultidisciplinaryteam within the National Atmospheric Release Advisory Center(NARAC– (Use the "Apply for this Job" box below). ),a national support and resource center for emergency planning, real-time assessment, emergency response, and detailed studies of atmospheric releases of nuclear, radiological,chemical, biological, and hazardous natural materials. This position is in the Atmospheric Science Research and Applications group within the Atmospheric, Earth, and Energy Division of the Physical Life Science Directorate.

In this role, you will

• Create atmospheric dispersion modeling calculations for hazardous atmospheric releases and provide consequence assessments.
• Develop assessments using output from NARAC’s modeling tools for scientific support and resolution of moderately complex to complex technical problems.
• Communicate results to internal and external audiences ranging from peers to sponsoring organizations via written technical reports and presentations.
• Serve as part of monthly on-call rotations in the NARAC Operations Center.
• Provide technical expertise and scientific support to NARAC users and stakeholders.
• Develop and document operating procedures and perform monthly testing of the NARAC modeling suite.
• Perform other duties as assigned.

In addition at the SES.
3 level:

• Lead complex technical projects and tasks, providing technical direction and coordinating project scope, staffing, schedules, and budgets.
• Develop proposed work scopes and contribute to or lead written proposals for sponsors.
• Independently conduct novel research, develop or adapt modeling methods and capabilities, and document findings in technical reports, peer-reviewed publications, and presentations.
• Serve as a technical expert, providing guidance to team members and contributing to technical strategy for atmospheric consequence assessment activities.

• Ability to secure and maintaina U.S. DOE Q-level security clearance, which requires U.S. citizenship.
• M.S. or higher in Meteorology, Atmospheric Science, Engineering or a closely related field or the equivalent combination of education and relevant experience.
• Desire to work in an operational or emergency response role.
• Experience applying microscale, boundary layer, or regional meteorology theories to solve moderately complex to complex problems.
• Proficient verbal and written communication skills necessary to interact in a clear and concise manner and explain technical information.
• Init…