| Present position and address: | | Lamont Research Professor |
| | Lamont-Doherty Earth Observatory of Columbia University |
| | 61 Route 9W |
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Palisades, NY 10964 |
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| | e-mail: jdavis AT ldeo.columbia.edu |
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| Education: | 1986 | Ph.D., Geophysics, Massachusetts Institute of Technology |
| 1981 | B.S., Physics (with honors), Michigan State University |
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| Positions held: | 2010– | Lamont Research Professor, LDEO, Columbia University |
| 2018–2021 | Hasselblad Visiting Professor (Affilierad Professor) in Space Geodesy and Geodynamics, |
| | Onsala Space Observatory, Chalmers University of Technology, Gothenburg, Sweden |
| 1998–2010 | Lecturer on Earthand Planetary Sciences, Harvard University |
| 1989–2010 | Geodesist and Senior Geodesist, Astrophysical Observatory, Smithsonian Institution |
| 1987–89 | U.S. Geological Survey, NRC Postdoctoral Research Associate |
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| Service and professional activities: | 2013–15 | NASA Space Geodetic Working Group |
| 2013–14 | Chair, AGU Meetings Committee |
| 2012–14 | GGOS Science Panel |
| 2010–12 | Chair, AGU Bylaws Committee |
| 2008–10 | NRC Committee on National Requirements for Precision Geodetic Infrastructure |
| 2008–10 | President, Geodesy Section, AGU |
| 2008–10 | EarthScope Steering Committee |
| 2008–10 | Chair, EarthScope Education and Outreach Subcommittee |
| 2007–09 | Chair, IAG Subcommission 3.4 (Crustal Deformation and Cryospheric Change) |
| 2006–12 | NRC Committee on Seismology and Geodynamics (COSG) |
| 2006–10 | AGU Council |
| 2006–10 | AGU Statutes and Bylaws Committee |
| 2006–08 | President-Elect, Geodesy Section, AGU |
| 2005–06 | Chair, PBO Data Analysis Working Group |
| 2003–08 | Stable North American Reference Frame Work\-ing Group |
| 2003– | NASA GRACE Mission Science Team |
| 2001–02 | Founding President, UNAVCO, Inc. |
| 1997–2000 | UNAVCO Steering Committee |
| 1996–98 | IAG Special Study Group (SSG) 1.159 (Use of GPS Positioning for Atmospheric Monitoring) |
| 1995–98 | IAG SSG 1.158 (GPS Antennas and Site Effects) |
| 1992–94 | IAG SSG 1.128 (The Wet Propagation Delay) |
| 1992– | International Union of Radio Science (URSI) |
| 1991–03 | Associate Editor, J. Geophys. Res. |
| 1988–90 | IAG SSG 4.93 (Wave Propagation in Refractive Media) |
| 1984– | American Geophysical Union (AGU) |
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| Awards and honors: | 2011 | Fellow of IAG |
| 2006 | Fellow, American Geophysical Union |
| 2000 | Bowie Lecturer, Fall Meeting, AGU |
| 1993 | NASA Group Achievement Award |
| 1989 | Editor's Citation for Excellence in Refereeing, J. Geophys. Res. |
| 1987 | National Research Council Postdoctoral Research Assoc. |
| 1986 | NASA Group Achievement Award |
| 1985 | NASA Graduate Student Researcher's Fellowship |
| 1981 | Thomas H. Osgood Undergraduate Physics Award, Michigan State University |
| 1978 | William J. Branstrom Freshman Prize, University of Michigan |
