Climate, Ocean & Sea-Ice Modeling (COSIM) Scientist (Scientist 2/3)

Updated: 17 days ago
Job Title Climate, Ocean & Sea-Ice Modeling (COSIM) Scientist (Scientist 2/3)
Location Los Alamos, NM, US
Organization Name T-3 / Fluid Dynamics & Solid Mechanics

What You Will Do

Los Alamos National Laboratory is a multidisciplinary research institution engaged in science and engineering on behalf of national security. This staff scientist position is within the Theoretical Division in the Climate, Ocean and Sea-Ice Modeling (COSIM) Team, which develops advanced ocean and ice models for the study of climate and climate change and its impacts on regions and societal assets throughout the globe.

The COSIM team seeks a staff scientist to work on a broad range of climate science activities in computational physics, computational science, high-performance computing, advanced programming models and analyses of coupled system dynamics.  In terms of computational physics, we seek research proposals for the development of advanced algorithms to improve the fidelity, performance and portability of global ocean, sea-ice and land-ice models with a focus toward high-resolution, grand-challenge scale configurations. We also seek expertise and research proposals related to profiling and optimization of climate system models on DOE leadership-class computing facilities. Proposals are encouraged that develop and implement new programming paradigms to efficiently utilize emerging, exascale, heterogenous computing architectures. With respect to simulation analyses we encourage research proposals that lead to improved description, fidelity and understanding of high-resolution ocean, sea-ice, land-ice and/or coupled system dynamics. The MPAS-Ocean, MPAS-Sea-Ice and MPAS-Land-Ice models are components of the newly developed U.S. Department of Energy climate model, the Accelerated Climate Model for Energy (ACME ). A particular focus of ACME is fully-coupled, global, high-resolution simulations of the Earth system relevant for energy and coastal impacts. Within this broad activity, the focus of Los Alamos National Laboratory is the role of ocean mesoscale eddies in the climate system, the role of the ocean and ice systems in the carbon cycle and the role of the ocean and ice systems in sea-level rise.

This position will be filled at either the Scientist 2 or 3 level, depending on the skills of the selected candidate.   Additional job responsibilities (outlined below) will be assigned if the candidate is hired at the higher level.

Scientist 2 ($84,300 - $139,000)

The successful candidate will be required to:

  • Contribute to the completion of milestones on one or more of the climate system modeling components.

  • Develop solutions to a wide range of complex computational physics problems by using new techniques and unconventional methods.

  • Report on completed work in technical reports, peer reviewed papers, and presentations.

Scientist Level 3 ($92,600 - $154,600)

In addition to the duties outlined above, the Scientist 3 will be required to:

  • Lead technical decision-making and direction at the project or team level.

  • Coordinate the work of others and serve as a role model for creative technical leadership within the team.

What You Need

Minimum Job Requirements:

  • Demonstrated scientific excellence as evidenced by submission and publication in refereed journals.

  • Demonstrated ability to work both independently and collaboratively with other project members to create or improve numerical models, and the ability to analyze and interpret climate model simulation data. 

  • Experience and knowledge of computational physics and/or climate modeling.

Additional Job Requirements: In addition to the Job Requirements outlined above, qualification at the Scientist 3 level also requires:

  • Experience in coupled climate model development and analysis, with a particular focus on ocean, sea-ice and/or land-ice processes.

  • Demonstrated experience and success in proposal writing, project management and mentoring.

Desired Skills:

  • Experience in construction or application of ocean, sea-ice and/or land-ice models.

  • Experience with the development of production software, especially an understanding of and an appreciation for the requirements of production software and how it differs from research code.

  • Expertise in current or emerging computer programming in languages compatible with high-performance computing (e.g. Fortran90, C, C++, Legion, Kokkos); expertise in shell scripting and/or data-analysis languages (e.g. Python, Matlab, R).

  • Experience or desire to work in community-based model development or evaluation activities (e.g. Community Vertical Mixing, CICE Consortium, Marine Biogeochemistry Library) is advantageous.


A Ph.D. plus two or more years of experience in geophysics, fluid dynamics, solid mechanics, climate modeling, computational science, physics, applied mathematics, or a closely related field.

Notes to Applicants:

Please include a curriculum vitae, names of three references, and a cover letter detailing qualifications and research interests that are specific to the job requirements outlined in this job advertisement with your application.

Additional Details:


No Clearance:  Position does not require a security clearance.  Selected candidates will be subject to drug testing and other pre-employment background checks.


New-Employment Drug Test: The Laboratory requires successful applicants to complete a new-employment drug test and maintains a substance abuse policy that includes random drug testing.


Term position: Regular-status Laboratory employees applying for term-status positions may retain regular status with approval of the cognizant Principle Associate Director.


Equal Opportunity: Los Alamos National Laboratory is an equal opportunity employer and supports a diverse and inclusive workforce. All employment practices are based on qualification and merit, without regards to race, color, national origin, ancestry, religion, age, sex, gender identity, sexual orientation or preference, marital status or spousal affiliation, physical or mental disability, medical conditions, pregnancy, status as a protected veteran, genetic information, or citizenship within the limits imposed by federal laws and regulations.  The Laboratory is also committed to making our workplace accessible to individuals with disabilities and will provide reasonable accommodations, upon request, for individuals to participate in the application and hiring process. To request such an accommodation, please send an email to or call 1-505-665-4444 option 1.

Where You Will Work


Located in northern New Mexico, Los Alamos National Laboratory (LANL) is a multidisciplinary research institution engaged in strategic science on behalf of national security.  LANL enhances national security by ensuring the safety and reliability of the U.S. nuclear stockpile, developing technologies to reduce threats from weapons of mass destruction, and solving problems related to energy, environment, infrastructure, health, and global security concerns.

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