The Geodesy and Geophysics Laboratory, Goddard Space Flight Center, is seeking a Research Geophysicist to focus on the development, advancement, and application of time variable gravity models including surface mass concentration representations from the reduction and analysis of inter-satellite tracking data and space geodetic data, and development of new methods and algorithms to advance the temporal and spatial resolution of the models.
Engages in professional scientific and engineering work which is systematic, critical, intensive investigation directed toward discovering, disseminating, and applying new or expanded knowledge.
Applies principles and techniques of geodesy, geophysics, and related sciences to investigate, measure, analyze, evaluate and interpret geophysical phenomena and artificially applied forces and fields of the Earth and planets.
Conducts research into and study of the physical characteristics of the Earth, Moon, and other planets, often using data from spacecraft, aircraft, geophysical observatories and sensors on the surface of the Earth, Moon, and planets.
Research will include techniques to model the Earth's time variable gravity field and its application to a wide array of Earth science disciplines including hydrology, oceanography, cryopsheric sciences, and solid earth science.
Research will include geodetic methods for observation and modeling of gravity, planetary orientation, planetary interior and surface change.
Conducts research to understand the characteristics, origins and dynamics of the Earth and planetary surface processes, crust, mantle, and core, as well as effects of ongoing changes in the nature and interrelationships of these planetary components.
Conducts special studies for NASA Programs/Projects and its partners.
Performs planning, design, test and evaluation, cost analyses, program and project management, and quality management for projects. Monitors contracted work either on-site or off-site.
Supports the development of new space geodesy technologies including satellite gravity gradiometry.
Communicates scientific research through meetings, conferences, and peer reviewed professional journals.
Duties described above are at the full-performance level. Duties assigned at a lower grade level will be of more limited scope, performed with less independence and limited complexity; duties will be commensurate with the grade of selected employ
Occasional travel - Travel may be required for training or other work-related duties
Job family (Series)
Conditions of Employment
Position subject to pre-employment background investigation
A one-year probationary period may be required
You must meet qualifications requirements by the closing date of this announcement.
This position is open to U.S. citizens, nationals or those who owe allegiance to the U.S.
In addition to the basic education requirement, you must have one year of specialized experience equivalent to the next lower grade, GS-12, which has equipped you with the particular competencies needed to successfully perform the duties of the position described above.
To qualify for the GS-13:
Specialized experience includes time variable gravity modeling and applications to multi-disciplinary Earth science research from Gravity Recovery and Climate Experiment (GRACE), GRACE Follow On (GRACE-FO), or Satellite Laser Ranging (SLR) gravity products; estimation of time variable gravity spherical harmonic models and mass concentration (mascon) models. Includes, designing regularization strategies for constrained large scale estimation problems specifically as it applies to mascon model development; optimizing the tradeoff between spatial and temporal performance of time variable gravity models for focused Earth science research applications including daily to monthly solutions over spatial scales of a few hundred kilometers to 1000 kilometers; and programming experience in the development of scientific data reduction, data analysis, or model estimation and analysis software.
In addition to the basic education requirement, you must have one year of specialized experience equivalent to the next lower grade, GS-13, which has equipped you with the particular competencies needed to successfully perform the duties of the position described above.
To qualify for the GS-14:
Specialized experience includes analysis and reduction of satellite tracking data (e.g. inter-satellite ranging data, Satellite Laser Ranging (SLR), satellite accelerometer data, force and measurement modeling for the development of high spatial and temporal resolution models of Earth time variable gravity using state of the art precision orbit determination and geodetic parameter estimation software (e.g. NASA GSFC's GEODYN software system); comprehensive development of high spatial and temporal resolution spherical harmonic and mass concentration (mascon) time variable gravity models, optimizing spatial and temporal resolution for numerous Earth science applications, and characterizing and calibrating errors using rigorous estimation theory and other space based and in situ remote sensing data and models; design, implementation, and evaluation of comprehensive simulations to define measurement objectives and requirements; or characterizing performance for future gravity and space geodesy mission design, optimization and implementation.
Vacant research positions may be filled at one of several grade levels depending upon the scientific impact of the person selected. A review may be required to determine the appropriate grade level of the position and supplemental materials may be required from the selectee. Please keep this in mind when indicating the lowest grade you will accept.
Your resume must include a clear and detailed narrative description, in your own words, of how you meet the required specialized experience. Experience statements copied from a position description, vacancy announcement or other reference material constitutes plagiarism and may result in disqualification and losing consideration for the job.
Please spell out all acronyms.
Candidates must have a bachelor's degree, preferably an advanced degree in engineering, physical science, or mathematics that included 24 semester hours in physical science and/or related engineering science such as mechanics, dynamics, properties of materials, or electronics.
Basic education requirement (combine with appropriate grade level AST qualification statement) Basic Education Requirement: A bachelor's degree from an accredited college or university with major study in Aeronautical Engineering, Aeronautics, Aerospace Engineering, Architecture, Astronautical Engineering, Astronautics, Astronomy, Astrophysics, Biomedical Engineering, Ceramic Engineering, Ceramics, Chemical Engineering, Chemistry, Civil Engineering, Computer Engineering, Computer Science*, Life Science, Earth and Planetary Science, Electrical Engineering, Electronics Engineering, Geology, Geophysics, Industrial Engineering, Materials Engineering, Materials Science, Mathematics (Pure or Applied), Applied Mechanics, Engineering Mechanics, Mechanical Engineering, Metallurgical Engineering, Metallurgy, Meteorology, Nuclear Engineering, Nuclear Engineering Physics, Oceanography, Optical Engineering, Physics, Applied Physics, Engineering Physics, Space Science, Structural Engineering, Welding Engineering or other appropriate physical science or engineering field. Degrees in engineering technology are not considered to be qualifying for this position.
- Note: Curriculum must include 30 semester hours of course work in a combination of mathematics, statistics and computer science that provided in-depth knowledge of the following: (1) theoretical foundations and practical applications of computer science, including digital computer system architecture and system software organization, the representation and transformation of information structures and the theoretical models for such representations and transformations; and (2) essential mathematical and statistical techniques. Of the 30 semester hours, 15 must be in any combination of statistics and mathematics which includes differential and integral calculus
U.S. Engineering degrees must have been awarded from a college or university school of engineering with at least one curriculum accredited by the Engineering Accreditation Commission (EAC) of the Accreditation Board for Engineering and Technology (ABET). To find out if a degree meets this requirement, go to http://www.abet.org.
Foreign Engineering degrees must be recognized by a Mutual Recognition Agreement (MRA), often known as accords.
These are non-governmental agreements among organizations that accredit academic degree programs. MRAs recognize the substantial equivalence of mature accreditation systems and programs accredited by signatory organizations within their jurisdictions. For a listing of Signatories, please visit, https://www.abet.org/global-presence/mutual-recognition-agreements/is-your-program-recognized/.
Science and other related degrees must have been awarded from colleges or universities that are accredited by recognized accrediting organizations. For a list of schools that meet this criteria, go to http://ope.ed.gov/accreditation/.
All degrees must have been received in the year of, or any year subsequent to the original date of accreditation.
Official transcripts will be required at the time of selection to verify that you meet the educational requirement or substitution.
U.S. degrees must have been awarded from colleges or universities that are accredited by recognized accrediting organizations. For a list of schools that meet this criteria, go to http://ope.ed.gov/accreditation/.
If you are using education completed in foreign colleges or universities to meet the qualification requirements, you must show that the education credentials have been evaluated by a private organization that specializes in interpretation of foreign education programs. These education credentials must be deemed equivalent to that gained in an accredited U.S. education program; or full credit has been given for the courses at a U.S. accredited college or university. For further information, visit: https://www2.ed.gov/about/offices/list/ous/international/usnei/us/edlite-visitus-forrecog.html.
All degrees must have been received in the year of, or any year subsequent to the original date of accreditation.
If this position has an education requirement or you are using education to qualify as a substitution for experience, official transcripts will be required at the time of selection to verify that you meet the educational requirement or substitution.
Identification of promotion potential in this position does not constitute a commitment or an obligation on the part of management to promote the employee. Promotion will depend upon administrative approval and the continuing need for an actual assignment and performance of higher level duties.
As identical vacancies are identified, additional selections may be made.
Any applicant tentatively selected for this position may be required to undergo a pre-employment background investigation. Individuals who have special priority selection rights under the Agency Career Transition Assistance Program (CTAP) or the Interagency Career Transition Assistance Program (ICTAP) must be well qualified for the position to receive consideration for special priority selection. See 'How You Will Be Evaluated' for definition of well qualified. Federal employees seeking CTAP/ICTAP consideration must indicate their eligibility when applying for a position. The USAJOBS resume asks you to identify your ICTAP eligibility; the NASA Supplemental Information asks you to identify your CTAP eligibility. If you are selected for the position, you must be prepared to submit proof that you meet the requirements for CTAP/ICTAP. This includes a copy of the agency notice, a copy of their most recent Performance Rating and a copy of their most recent SF-50 noting current position, grade level, and duty location.
As a condition of employment, male applicants born after December 31, 1959, must certify that they have registered with the Selective Service System, or are exempt from having to do so under the Selective Service Law. In order to receive preference in hiring, you must clearly identify your claim for veterans preference on your resume.
NASA's Applicant Guide provides the information needed to assist you in determining whether or not you can claim 5 or 10 point veterans preference. You should not submit documents to prove your eligibility for veterans preference at this time. However, you must be prepared to submit proof of veterans preference (DD-214, and, if claiming 10-point preference, SF-15 plus proof required by that form) as requested by the Human Resources Office. Veterans preference will only be considered based on what is supported For instance, if you claim 10-point preference, but are only able to document 5-point preference, you will be considered accordingly. If you fail to provide the required documents within the stated time period, we may withdraw a job offer and/or remove you from further consideration.
Your USAJOBS account asks you to assign a name to each of your resumes. When you apply to a NASA position, we will show you the text of the resume you have submitted, but we do not maintain the name you have assigned to that resume. If you wish to keep track of that information, we recommend you make note of it at the time you apply.
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NASA Credit for National Service
How You Will Be Evaluated
You will be evaluated for this job based on how well you meet the qualifications above.
NASA uses an automated system (Resumix) that matches the competencies extracted from your resume to the competencies identified by the selecting official for the position. Based on the competencies you match, you are placed in one of three categories identified as 90, 80, or 70 pt. quality categories, which are defined as:
90 pt. Category - Tentatively meets (until subsequent confirmation upon referral) the basic qualification requirements identified in the vacancy announcement and has experience in the same or similar job that has demonstrated superior proficiency in the primary requirements of the position.
80 pt. Category - Tentatively meets (until subsequent confirmation upon referral) the basic qualification requirements identified in the vacancy announcement and demonstrates satisfactory proficiency in the primary requirements of the position.
70 pt. Category - Fails to meet criteria described in the 80 pt. category.
Additional application guidance is available in NASA's Applicant Guide.
Information for Veterans:
The Category Rating Process protects the rights of veterans by placing them ahead of non-preference eligibles within each category. Preference eligibles who meet qualification requirements and have a compensable service-connected disability of at least 10 percent must be listed at the top of the highest quality category, except when the position being filled is scientific or professional at the GS-09 grade level or higher.
For the purpose of the Career Transition Assistance Program (CTAP) and the Interagency Career Transition Assistance Program (ICTAP), candidates rated in the top quality category are considered well-qualified
Background checks and security clearance
Drug test required
NASA's application process has been specifically developed to ensure that we only ask you for the information we absolutely need to evaluate your qualifications and eligibility. In order to apply for this position, you only need to submit your resume and answer the screening questions and supplemental information. No additional documentation is accepted at the time of application. (For example you need not submit narrative 'KSA' statements; they are not required and will not be evaluated.) In this way we allow you to focus on preparing a resume that best describes your background and abilities. For assistance in preparing your resume, consult the Applicant Guide. Nothing further is required until requested by the Human Resources Office. At that point, we may ask you to submit documentation to support statements made in your resume. For example, we may ask you to provide academic transcripts or proof of Federal employment status. If you are claiming veterans' preference, we may ask you to submit proof of veterans preference (DD-214, and, if claiming 10-point preference, SF-15 plus proof required by that form). If you fail to provide the required documents within the stated time period, we may withdraw a job offer and/or remove you from further consideration.
To receive consideration, you must submit a resume and answer NASA-specific questions. The NASA questions appear after you submit your resume and are transferred to the NASA web site. If you successfully apply, USAJOBS will show your application status as 'Received'. If your status is 'Application Status Not Available', you have not successfully applied. Do not rely on a USAJOBS email to confirm successful application. Only an email from NASA confirms a successful application.
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This job is open to
U.S. citizens, nationals or those who owe allegiance to the U.S.