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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>DEVELOPMENT OF A NEW GROUND-TO-SPACE ATMOSPHERIC PREDICTION MODEL<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The Space Science Division of the US Naval Research Laboratory (NRL) in Washington, DC seeks a highly motivated individual to immediately join a cross-disciplinary multi-institutional research team, tasked with rapidly developing and validating a new state-of-the-art global numerical model of the neutral atmosphere extending from the ground to 400 km altitude, for high-resolution forecasting of the deep atmosphere for terrestrial and space-weather applications. The successful candidate will join a strong team of research scientists already in place at NRL and partner institutions that builds upon NRL’s institutional expertise in high-altitude atmospheric model development for new and improved operational environmental prediction capabilities for the globally deployed Navy.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The new atmospheric model is based on an emerging Navy dynamical core that solves the deep-atmosphere nonhydrostatic equations on the sphere using spectral element (SE) methods. The candidate will work primarily with a group at NRL DC developing and validating new upper-atmospheric (mesospheric and thermospheric) components of the model, including dynamics and physical parameterizations that respond to solar and geomagnetic forcings. The candidate will conduct high-resolution model experiments on massively parallel high-performance computers to test and validate new model physics and grids (e.g., static mesh refinement). In the process, the candidate may also collaborate with other project research teams located at NRL DC and elsewhere that are focusing on the model’s lower altitudes, high-altitude data assimilation capabilities, and physical coupling to ionospheric models. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We seek a self-motivated candidate eager to study upper-atmospheric dynamics and physics relevant to short-term prediction, to develop efficient algorithms of these processes, to integrate them as new computer code within the evolving infrastructure of the new model, then to run and validate the new model in real-world whole-atmosphere scenarios. A Ph.D. in atmospheric science, computational fluid dynamics, physics, or a related discipline, is therefore preferred. Ability and willingness to work in the environment of a large, diverse and geographically distributed team, to achieve collective team goals and deliver specific monthly, quarterly and annual reporting milestones, are essential. Programming skills are required in working with a complex modern highly-scalable Fortran code using up to 1 million processors per run. Candidates with interests or expertise in applying modern coding practices on new and emerging supercomputing architectures are particularly encouraged to apply, though lack of expertise in such areas is not disqualifying. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Interested U.S. citizens or permanent residents should directly contact Steve Eckermann (<a href="mailto:stephen.eckermann@nrl.navy.mil">stephen.eckermann@nrl.navy.mil</a>) with questions about the position. Applications will be accepted until 20 April 2021 or until the position is filled. NRL is an equal opportunity employer.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Swis721 BT",sans-serif;color:#172A56'>STEVE ECKERMANN</span></b><span style='font-size:6.0pt;font-family:"Swis721 BT",sans-serif;color:#172A56'><o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:6.0pt;font-family:"Swis721 BT",sans-serif;color:#172A56'>SPACE SCIENCE DIVISION<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:6.0pt;font-family:"Swis721 BT",sans-serif;color:#172A56'>GEOSPACE SCIENCE & TECHNOLOGY BRANCH<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:6.0pt;font-family:"Swis721 BT",sans-serif;color:#172A56'>CODE 7631<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:6.0pt;font-family:"Swis721 BT",sans-serif;color:#172A56'>U.S. NAVAL RESEARCH LABORATORY<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:6.0pt;font-family:"Swis721 BT",sans-serif;color:#172A56'>TEL: (202) 404-1299; FAX: (202) 404-1767<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:6.0pt;font-family:"Swis721 BT",sans-serif;color:#172A56'><a href="https://www.nrl.navy.mil/"><span style='color:blue'>https://www.nrl.navy.mil</span></a></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>