Astrophysicist, Planetary Magnetospheres Laboratory, Solar System Exploration Division
2006 - Member Planetary Atmospheres Review Panel
2005 - Radiation Belt Storm Probe Mission Deputy Project Scientist
2004 - Member NASA Mars Aeronomy Working Steering Committee
2004 - Member Planetary Atmospheres Review Panel
2003 - Deputy Project Scientist, Living With a Star Geospace Missions
2002 - Member JGR- Planets Editor Search Committee
2001 - Member Planetary Atmospheres review panel
2000 - Member of Geospace ITM review panel
1998 - Program Scientist at GSFC for NASA's Sun Earth Connections Theory Program
1997 - Project Scientist for Geospace Electrodynamic Connections mission
1995-1997 - Assisted R. Carovillano in managing NASA's Magnetosphere Physics program
1994-1996 - Member NASA ITM MOWG
1993-1994 - Deputy Project Scientist for TIMED
1992-1994 - Co-investigator on TIMED TWINNIE Experiment
1992-1993 - Coinvestigator on Pioneer Venus Orbital Ion Mass Spectrometer Team
1991-1992 - Member of Source Evaluation Board for NOAA Space Environment Monitoring System
1991 - Member of NASA Space Physics Suborbital Science review panel
1990 - Chairman of NASA Space Physics Guest Investigator Program review panel
1990 - Chairman of Cassini Experiment review panel, and member of NASA's categorization panel for investigator selection on this mission
1990-1998 - Coinvestigator (with responsibility for the ion measurements) on the Contamination Experiment team for the Midcourse Space Experiment (MSX). The APL contamination monitoring package is to be flown on a Strategic Defence Initiative satellite mission (1994 launch)
1990-1992 - PI responsibility for the Atmosphere Explorer satellites' ion mass spectrometer data used in NASA's Space Physics Guest Investigator Program
1988-1992 - Co-chairman of Pioneer Venus Guest Investigator Review Panel
1988 - Member of EOS proposal evaluation panel
1988 - Member of CRAF science review panel
1988-1990 - Coinvestigator on Neutral Gas Ion Mass Spectrometer experiment team for the Comet Rendezvous Asteroid Flyby (CRAF) mission
1987-1990 - Member of Space Station Plasma Interaction Effects Working Group
1987 - Member of science definition team for the Mars Aeronomy Orbiter mission
1984-1987 - Principal Scientist for ion spectrometer flown as part of the U. Iowa's Plasma Diagnostic Package that was carried on two Space Shuttle missions: STS-3 and Spacelab 2 (STS-51F)
1983-1984 - One year halftime detail followed by one year fulltime detail at NASA Headquarters in Planetary Atmosphere Program of the Planetary Division under H. C. Brinton Executive secretary of the Planetary Atmospheres Management Operations Working Group (MOWG)
1983 - Member of Pioneer Venus Guest Investigator panel
1982 - Member of CRESS science review and categorization panel
1978-1979 - Half time detail at NASA Headquarters in Planetary Atmosphere Program of the Planetary Division under R. Murphy Was responsible for developing and setting up the charter for the program's MOWG Served on numerous GSFC committees and mentored several high school and undergraduate students Typically referee or critique more than 5 scientific journal submissions/NASA proposals per year
Summer 1962 Summer Trainee, Atomic Energy Commission, New York Operations Office
Summer 1963 Physicist, Naval Ordnance Laboratory, White Oak, Maryland
1963-1965 Research Assistantship, Ionosphere Research Lab., Pennsylvania State University
American Geophysical Union
"Altitude Variation of the Plasmapause signature in the Main Ionospheric Trough", J. M. Grebowsky, R. F. Benson, P. A. Webb, V. Truhlik and D. Bilitza, In Press, J. Solar-Terr. Phys., 2009.
"NASA's Formulation of Two Multiple Spacecraft Missions to Explore the Ionosphere and Thermosphere", J. Grebowsky, and D. Sibeck, in Proceedings of the Workshop: Future Perspectives of Space Plasma and Particle Instrumentation and International Collaborations", November 2006, Rikkyo University, Tokyo, Japan, In Press, 2009.
"Planetary Ionospheres - Sources and Dynamic Drivers", J.M. Grebowsky and A. C. Aikin in Universal Heliophysical Processes, Proceedings IAU Symposium No 257, 2008, In Press 2009.
"Seasonal Variations of Magnesium Atoms in the Mesosphere-Thermosphere", J. Correira, A. C. Aikin, J. M. Grebowsky, W. D. Pesnell, and J. P. Burrows, Geophys. Res. Lttrs., VOL. 35, L06103, doi:10.1029/2007GL033047, 2008.
"Technique for Determining Mid-Latitude O+/H+ Transition Heights from Topside Ionograms", P. H. Webb, R. F. Benson and J. M. Grebowsky, Radio Science, RS6S34, doi:10.1029/2005RS00339, 2006.
"Altitude Variations of Middle-Latitude Topside Ionosphere Electron-Density Profiles", P.A. Webb, R. F. Benson and J. M. Grebowsky, Adv. Space Res., 37, 951-957, 2006.
"Meteoric ions in Venus. Ionosphere", Pesnell, W.D. and J.M. Grebowsky, J. Geophys. Res., Planets, submitted, 2006.
"Temporal Evolution of the Vertical Content of Metallic Ion and Neutral Species", A.C. Aikin, J. M. Grebowsky, J. P. Burrows, J. Correira, W.D. Pesnell, J. Atmos.-Solar Terr. Phys., 67, 1238-1244, 2005.
"Venus/Mars Pickup Ions and Ionosheath Wave Structures", J. M. Grebowsky, D. H. Crider, D.S. Intriligator, R. E. Hartle, and M. H. Acuna, Adv. Space Res., 33, 176-181, 2004.
"Satellite Measurements of the Atmospheric Content of Metallic Ion And Neutral Species", A. C. Aikin, J. M. Grebowsky, and J. P. Burrows, Adv. Space Res., 33, 1481-1485, 2004"
"Watching Meteors on Triton" Pesnell, W. D., J. M. Grebowsky and A. L. Weisman, ICARUS, 169, 482-491, 2004.
"Equatorial F-Region Ion Composition Morphology from Satellite Measurements," J. M. Grebowsky, Adv. Space Res., 31, No.3, 681-686, 2003.i
"Online Data Base of Satellite Sounder and In Situ Measurements Covering Two Solar Cycles", D. Bilitza, B. Reinisch, R. Benson, J. Grebowsky, N. Papitasvili, X. Huang, W. Schar and K. Hills, Adv. Space Res., 31, 769-774, 2003.
"In-situ Meteoric Ion Measurements", J. M. Grebowsky, A. I. Aikin, chapter in Meteors in the Earth.s Atmosphere, ed.: E. Murad and I. P. Williams, U. Cambridge Press, New York, Chapter 8, pp. 189-214, 2002.
"Meteoric Material - an Important Component of Planetary Atmospheres", J. M. Grebowsky, J. Moses, W. D. Pesnell, in Comparative Aeronomy, Geophysical Monograph 130, ed. Mendillo, Nagy, Waite, American Geophysical Union, 235-244, 2002.
"Ionospheric Data for two Solar Cycles Available Online", Bilitza, D., N. Papitashvili, J. Grebowsky and W. Schar., in Proceedings of the the IRI Task Force Activity 2001, ed. By S. M. Radicella, UNESCO and IAEA, Abdus Salam International Centre for Theoretical Physics, Trieste, pp 23-28.August 2002.
"Ongoing Evolution of the Geospace Electrodynamic Connections Mission", J. M. Grebowsky and R. P. Buchanan, IAF Paper Number IAA-02-IAA.11.1.05, International Astronautical Federation, Paris, France, 2002.
"Geospace Electrodynamic Connections", J. M. Grebowsky and J. C. Gervin,, Physics and Chemistry of the Earth, 26, 253-258, 2001.
"Extremely Low Ionospheric Peak Altitudes in the Polar-Hole Region", R. E. Benson and J. M. Grebowsky, Radio Sci., 36, 277-285, 2001.
"Meteoric Ions in the Ionosphere of Jupiter", Kim, Y. J., W. D. Pesnell, J. M. Grebowsky and J. L. Fox,, Icarus, 150, 261-278, 2001.
"Meteoric Ions in Planetary Ionospheres", W. D. Pesnell and J. M. Grebowsky, Adv. Space Res., 27, 1807-1814, 2001.
"Ionospheric Flow and Escape of Ions from Titan and Venus", R. E. Hartle. D. S. Intriligator and J. M. Grebowsky, Adv. Space Res., 27, 1869-1874, 2001.
"Sounding Rocket Data Base of E- and D-Region Ion Composition", J. M. Grebowsky and D. Bilitza, Adv. Space Res., 25, 183-192, 2000.
"Meteoric Magnesium Ions in the Martian Atmosphere", W. D. Pesnell and J. M. Grebowsky, J. Geophys. Res., 105, 1695-1708, 2000.