Associate Scientist, Earth Sciences
The incumbent of this position will perform science research studies related to subgrid variability in the GEOS model. About half of the work will focus on the effect of subgrid heterogeneity on surface-atmosphere coupling. The incumbent will contribute to the development and evaluation of heterogeneous boundary layer parameterizations in the GEOS model, using single-column and global experiments. For the first year, the incumbent will also be involved in a suite of observing system simulation experiments (OSSEs) targeting wind observations. In this effort, they will contribute to a larger OSSE effort by helping to quantify the lack of subgrid variability in numerous winds observing systems funded under the umbrella of the NASA Earth Science Technology Office. Essential Duties/Responsibilities: Use of the GEOS coupled system to examine the effect of subgrid heterogeneity on surface-atmosphere couplingAnalyze the impact of different wind observing systems, using standard metrics of performance, such as forecast skill and observation impact metricsAdvance use of the GEOS coupled system to develop and improve GMAO OSSE capabilitiesEngage the academic community, both national and international, in research work through research collaborations, visits, invited guests, workshops, conferences, etc.Develop an awareness of NASA's mission needs, NASA's Earth Science Technology Office objectives and address them to the best of ability.Complete all trainings as required.Other job-related duties as assignedRequired Qualifications: Education: Ph.D. in atmospheric science, earth science or related disciplineExperience: Must have 1+ years of postdoctoral experience.Knowledge, Skills & Abilities:Extensive knowledge of atmospheric turbulence and boundary layer processes as demonstrated by relevant publication(s).Familiarity with EDMF-type boundary layer parameterizations, higher-order turbulence closures, and the GEOS model, is desired.Experience running/evaluating coupled and/or global Earth system models.Demonstrated ability to work autonomously on large computational code bases running on high-performance computing environments.Knowledge of principles of data assimilation in a global modeling context.Deep understanding and practical knowledge of observing system simulation experiments (OSSE) design and evaluation.Familiarity with basic metrics to assess model performance and forecast skill.Ability to work in a high-end computer UNIX environment and to handle large data sets in netcdf or other standard formats.Extensive knowledge of graphical packages and advanced visualization techniques for ocean and atmospheric data sets.Proficiency with Fortran, Python, and Unix is essential.Knowledge or ability to learn advanced computing techniques in an ESMF environment, with GIThub code management, and OpenMP/MPI coding techniques is essential.Demonstrated ability to carry out research and publish peer-reviewed papers.Attributes: Strong analytical and problem-solving background.Strong verbal and written communication skills.Willingness to learn and improve.Strong team player.Ability to contribute to team-focused developments of large, complex data assimilation systemsAdditional List of Requirements:Meet regularly with the GSFC Sponsor and other team members to plan experiments and report results.Demonstrate ability to work independently towards science research goals. Document science studies through internal presentations to peers and through written manuscripts, for GMAO reports or peer-reviewed publications, as appropriate.Commit code developments to GMAO's Git repositories and assist colleagues in using these code developments in evolving GMAO systems.Demonstrate commitment to teamwork and collaboration across the GMAO, with civil servants, other research institute staff, and support staff, as needed.Contribute to the intellectual growth of colleagues by engaging in scientific and technical discussions, making presentations at internal meetings, etc.Follow all NASA rules and regulations regarding access to center, use of IT equipment, and building access, as defined through the Satern training opportunities.Working Conditions: Work will be performed in an office or computer lab environment. While performing the duties of this job, the employee is frequently required to stand; walk; sit; talk or hear. Keyboarding for large time spans each day may be a significant part of this position. Travel: Negligible. Applicants should apply to the posting at USRA Careers and include a letter of interest, resume, or curriculum vita. Additional information on USRA can be found at www.usra.edu. USRA is an Equal Opportunity Employer: Minorities / Females / Protected Veterans / Disabled / Sexual Orientation / Gender Identity.