Mr. John W Robbins

Photo of JOHN ROBBINS

Mr. John W Robbins

  • PRINCIPAL SCIENTIST
  • 319.337.5249
  • NASA/GSFC
  • Mail Code: 615
  • GREENBELT , MD 20770
  • Employer: SGT INC
  • Brief Bio

    Mr. Robbins has provided expertise in various geodetic, tectonic and cryospheric research efforts since 1984. His main present interests include the analysis of spaceborne laser altimeter and terrestrial-based satellite laser range data as applied to the detection, estimation and monitoring of various components of Earth surface and planetary dynamics. He serves as principal scientist for Craig Technologies Inc., of Cape Canaveral, FL, and supports (under contract, via telecommuting) NASA Goddard Spaceflight Center’s Cryospheric Branch in Greenbelt, MD. He is presently active in research and development efforts involving ICESat data, including software development as applied to the estimation, analysis and mapping of ice sheet surficial changes in Greenland and Antarctica as well as monitoring sea ice variations in the Arctic Ocean and seas surrounding Antarctica.

    Earlier in Mr. Robbins’ career, he provided scientific support, modeling and algorithm development for various NASA missions, including LAGEOS, SEASAT, TOPEX/Poseidon, as applicable to research in global gravitational modeling, tectonics, oceanography, as well as modeling non-conservative components of spacecraft dynamics. He has gained considerable experience in NASA mission preparation, investigating concept designs for geopotential research missions, TOPEX/Poseidon and Mars Observer.

    Research Interests

    Geodesy

    Studies of geodetic nature, including precision positioning, cartographic tools, gravity field modeling and mapping, time-dependent positioning and point tracking.

    Cryosphere

    General cryospheric interests include ice sheet elevation monitoring, sea ice freeboard estimation and assessment, satellite instrumental bias estimation.

    Current Projects

    ICESat

    Investigations have included estimation of ice sheet heights and their variations through time, ice cap heights and time variations. Estimates of sea ice freeboard elevations and their implied volumes. Related oceanographic investigations.

    ICESat-2

    Providing expertise in the area of geophysical modeling and corrections required for L2A science data products planned for the ICESat-2 mission.

    Positions/Employment

    1 / 2007 - Present

    SGT/Craig Technologies

    SGT & Craig Technologies, GSFC (on site) & via telecommuting Part of the SGT GGSG team since about 1985. Returned in 2008.
    Since 2008 I've been part of Code 615, Cryospheric Lab.

    Title: Principal Scientist. Exmphasis in geodedic and cryospheric research.

    6 / 1985 - 5 / 1996

    EG&G/Hughes STX

    EG&G/WASC Inc. & Hughes STX Inc., Lanham, MD and Greenbelt, MD Title: ranged from Systems Analyst to Principal Analyst.

    Worked for NASA/GSFC Laboratory for Terrestrial Physics (old code 620).

    Provided geodetic and gravitational expertise applied to LAGEOS and Topex/Poseidon projects.

    Education

    1981: Recieved BS in Surveying and Photogrammetry, California State Univ., Fresno, California.
    1985: Received MS Geodetic Science, Ohio State Univ., Columbus, Ohio.

    Professional Societies

    American Geophysical Union, 1980 - Present

    Selected Publications

    Refereed

    Kohler, J., T. A. Neumann, J. W. Robbins, S. Tronstad, and G. Melland. 2013. "ICESat Elevations in Antarctica Along the 2007–09 Norway–USA Traverse: Validation With Ground-Based GPS." IEEE Trans. Geosci. Remote Sensing 51 (3): 1578-1587 [10.1109/TGRS.2012.2207963]

    Zwally, H. J., J. Li, A. C. Brenner, et al. M. Beckley, H. G. Cornejo, J. DiMarzio, M. B. Giovnetto, T. A. Neumann, J. Robbins, J. L. Saba, D. Yi, and W. Wang. 2011. "Greenland ice sheet mass balance: distribution of increased mass loss with climate warming 2003-2007 versus 1992-2002." Journal of Glaciology

    Yi, D., H. J. Zwally, and J. W. Robbins. 2011. "ICESat observations of seasonal and interannual variations of sea-ice freeboard and estimated thickness in the Weddell Sea (2003-2009)." Annals of Glaciology 43-51

    Rubincam, D., D. Currie, and J. Robbins. 1997. "LAGEOS I once-per-revolution force due to solar heating." J. Geophys. Res. 102 (B1): 585-590 [10.1029/96JB02851]

    Robbins, J. W., D. E. Smith, and C. Ma. 1993. "Horizontal crustal deformation and large scale plate motions inferred from space geodetic techniques, in Contributions of Space Geodesy to Geodynamics." AGU Geodynamics Series 21-49 10.1029/GD023

    Talks, Presentations and Posters

    AGU: ICESat Estimates of Elevation and Volume Changes of Greenland Ice Caps 12 / 2012
    Poster that showed ICESat estimated height variations across 20+ ice caps surrounding Greenland.
    AGU: Antarctic Ice-Shelf Front Dynamics from ICESat 12 / 2011
    Poster showing horizontal estimates of ice shelf speed based on ICESat measurements of height. Technique utiized the motion of rift zones on the Ross ice shelf, Antarctica.

    Awards

    December 12, 1986: NASA group achievement award for Crustal Dynamics Project.
    December 12, 1986: NASA group achievement award for Topex Earth gravity model development team.
    March 27, 1992: NASA group achievement award for Goddard Earth Model GEM T3.
    February 10, 1993: NASA group achievement award for Topex/Poseidon Mission Design.
    May 18, 1993: NASA group achievement award for Joint Gravity Model-1 (JGM-1) Team.


    Brief Bio

    Mr. Robbins has provided expertise in various geodetic, tectonic and cryospheric research efforts since 1984. His main present interests include the analysis of spaceborne laser altimeter and terrestrial-based satellite laser range data as applied to the detection, estimation and monitoring of various components of Earth surface and planetary dynamics. He serves as principal scientist for Craig Technologies Inc., of Cape Canaveral, FL, and supports (under contract, via telecommuting) NASA Goddard Spaceflight Center’s Cryospheric Branch in Greenbelt, MD. He is presently active in research and development efforts involving ICESat data, including software development as applied to the estimation, analysis and mapping of ice sheet surficial changes in Greenland and Antarctica as well as monitoring sea ice variations in the Arctic Ocean and seas surrounding Antarctica.

    Earlier in Mr. Robbins’ career, he provided scientific support, modeling and algorithm development for various NASA missions, including LAGEOS, SEASAT, TOPEX/Poseidon, as applicable to research in global gravitational modeling, tectonics, oceanography, as well as modeling non-conservative components of spacecraft dynamics. He has gained considerable experience in NASA mission preparation, investigating concept designs for geopotential research missions, TOPEX/Poseidon and Mars Observer.

    Refereed

    Kohler, J., T. A. Neumann, J. W. Robbins, S. Tronstad, and G. Melland. 2013. "ICESat Elevations in Antarctica Along the 2007–09 Norway–USA Traverse: Validation With Ground-Based GPS." IEEE Trans. Geosci. Remote Sensing 51 (3): 1578-1587 [10.1109/TGRS.2012.2207963]

    Zwally, H. J., J. Li, A. C. Brenner, et al. M. Beckley, H. G. Cornejo, J. DiMarzio, M. B. Giovnetto, T. A. Neumann, J. Robbins, J. L. Saba, D. Yi, and W. Wang. 2011. "Greenland ice sheet mass balance: distribution of increased mass loss with climate warming 2003-2007 versus 1992-2002." Journal of Glaciology

    Yi, D., H. J. Zwally, and J. W. Robbins. 2011. "ICESat observations of seasonal and interannual variations of sea-ice freeboard and estimated thickness in the Weddell Sea (2003-2009)." Annals of Glaciology 43-51

    Rubincam, D., D. Currie, and J. Robbins. 1997. "LAGEOS I once-per-revolution force due to solar heating." J. Geophys. Res. 102 (B1): 585-590 [10.1029/96JB02851]

    Robbins, J. W., D. E. Smith, and C. Ma. 1993. "Horizontal crustal deformation and large scale plate motions inferred from space geodetic techniques, in Contributions of Space Geodesy to Geodynamics." AGU Geodynamics Series 21-49 10.1029/GD023

                                                                                                                                                                                            
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