NASA Logo Jet Propulsion Laboratory California Institute of Technology View the NASA Portal
NASA Banner
NASA Banner
NASA Banner
JPL HOME EARTH SOLAR SYSTEM STARS & GALAXIES SCIENCE & TECHNOLOGY
NASA Banner
JPL Science
JPL Science Division Home
Center for Climate Sciences Center for Climate Sciences
Planetary Science Planetary Science
Astrophysics & Space Sciences Astrophysics & Space Sciences
Climate, Oceans and Solid Earth Sciences Climate, Oceans and Solid Earth Sciences
Solid Earth
AIRS Atmospheric Science
Ocean Circulation
People
Projects
Orbiting Carbon Observatory Science
Water and Carbon Cycles
Earth Surface Science
Oceans and Ice
Earth Atmospheric Science Earth Atmospheric Science
Directorate Science Affiliates Directorate Science Affiliates
Open Postdoc Positions Open Postdoc Positions
Brochures Brochures
 Ocean Circulation: People
Joshua Willis's Picture
Address:
Jet Propulsion Laboratory
M/S 300-323
4800 Oak Grove Drive
Pasadena, CA 91109
Phone:
818.354.0881
Fax:
818.393.6270
Email:
Curriculum Vitae:
Website:

Joshua Willis
Project Scientist - Jason-3

Education
  • B.S., Physics & Mathematics, University of Houston, Honors College, Houston, Texas (1996)
  • M.S., Physics, University of California, San Diego, La Jolla, California (1998)
  • Ph.D., Oceanography, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California (2004)
Research Interests
  • Estimating ocean warming and sea level rise on regional to global scales
  • The role of the ocean in the Earth's climate system under global climate change
  • Understanding large scale changes in the ocean and its circulation on interannual to decadal time scales
  • Development of analysis techniques for global oceanographic data sets
Projects

ECCO Icon ECCO
The "Estimating the Circulation and Climate of the Ocean" (ECCO) project produces sustained estimates of the complete global three-dimensional state of the ocean by assimilating observations with ocean circulation models.

Jason-3 Icon Jason-3
Jason-3 will continue the time series of ocean surface topography data after TOPEX/Poseidon, Jason-1 and Jason-2. Launch is planned for 2015.

Professional Experience
  • Jet Propulsion Laboratory (2004 - present)
    • Jason-3 Project Scientist (2011-present)
    • Scientist (2006 - present)
    • Caltech Postdoctoral Scholar (2004 - 2006)
Selected Awards
  • AGU Ocean Sciences Early Career Award (2011)
  • Presidential Early Career Award for Scientists and Engineers (2009)
  • Lew Allen Award for Excellence (2009)
Selected Publications
  1. Hobbs, W., and J. K. Willis (2011), Estimates of North Atlantic heat transport from satellite and drifter data, J. Geophys. Res., doi:10.1029/2011JC007039, in press.
  2. Leuliette, E., and J. K. Willis (2011), Balancing the Sea-level Budget, Oceanography, 24(2):122-129, doi:10.5670/oceanog.2011.32.
  3. Willis, J.K., D. P. chambers, C.-Y. Kuo, and C. K. Shum (2010), Global Sea Level Rise: Recent Progress and Challenges for the Decade to Come, Oceanography, 23(4), 26-35.
  4. Lee, T., W. R. Hobbs, J. K. Willis, D. Halkides, I. Fukumori, E. M. Armstrong, A. K. Hayashi, W. T. Liu, W. Patzert, and O. Wang (2010), Record warming in the South Pacific and western Antarctica associated with the strong central-Pacific El Niño in 2009-10, Geophys. Res. Lett., 37, L19704, doi:10.1029/2010GL044865.
  5. Syed, T., J. Famiglietti, D. Chambers, J. Willis and K. Hilburn (2010), Increasing Continental Freshwater Discharge from Satellite-Based Global Ocean Mass Balance (1994-2006), Proc. Natl. Acad. Sci. USA, published online Oct 4, 2010, doi: 10.1073/pnas.1003292107.
  6. Chambers D. P., J. K. Willis (2010), A Global Evaluation of Ocean Bottom Pressure from GRACE, OMCT, and Steric-Corrected Altimetry, J. Atmos. Oceanic Technol., 27, 1395-1402, doi:10.1175/2010JTECHO738.1.
  7. Roemmich, D., J. Willis, J. Gilson, D. Stammer, A. Koehl, T. Yemenis, D. P. Chambers, F. Landerer, J. Marotzke, J. Gregory, T. Suzuki, J. Church, N. White, C. Domingues, A. Cazenave, and P.-Y. LeTraon (2010), Global Ocean Warming and Sea Level Rise, in Understanding Sea-Level Rise and Variability, J. A. Church, P. L. Woodworth, T. Aarup, and W. S. Wilson (eds.), Wiley-Blackwell.
  8. Willis, J. K., Can In-Situ Floats and Satellite Altimeters Detect Changes in Atlantic Ocean Overturning? (2010), Geophys. Res. Lett., 37, L06602, doi:10.1029/2010GL042372.
  9. Lyman, J. M., S. A. Good, V. V. Gouretski, M. Ishii, G. C. Johnson, M. D. Palmer, D. A. Smith, and J. K. Willis (2010), Robust warming of the global upper ocean, Nature, 465, 334-337 doi:10.1038/nature09043.
  10. Syed, T., J. Famiglietti, D. Chambers, J. Willis and K. Hilburn (2010), Increasing Continental Freshwater Discharge from Satellite-Based Global Ocean Mass Balance (1994-2006), PNAS, submitted.
  11. Willis J. K., J.M. Lyman, G.C. Johnson, and J. Gilson, 2009: In Situ Data Biases and Recent Ocean Heat Content Variability. J. Atmos. Oceanic Technol., 26, 846-852.
  12. Chambers D. P., J. K. Willis (2009), Low-frequency exchange of mass between ocean basins, J. Geophys. Res., 114, C11008, doi:10.1029/2009JC005518.
  13. Marcus, S. L., J. O. Dickey, J. K. Willis, and F. K. Seitz (2009), Earth oblateness changes reveal land ice contribution to interannual sea level variability, Geophys. Res. Lett., 36, L23608, doi:10.1029/2009GL041130.
  14. Willis, J.K., D. P. Chambers, R. S. Nerem, Assessing the Globally Averaged Sea Level Budget on Seasonal to Interannual Time Scales, J. Geophys. Res., 113, C06015, doi:10.1029/2007JC004517, 2008.
  15. Chambers D. P., J. K. Willis, Analysis of large-scale ocean bottom pressure variability in the North Pacific (2008), J. Geophys. Res., 113, C11003, doi:10.1029/2008JC004930.>/li>
  16. Tamrazian, A., S. LaDochy,J. Willis, and W. C. Patzert, Heat Waves in Southern California: Are They Becoming More Frequent and Lasting Longer?, Yearbook of the APCG, 70, 59-69, 2008.
  17. Johnson, G. C., J. M. Lyman, and J. K. Willis, 2008: Global Oceans: Ocean Heat Content. In State of the Climate in 2007, D. H. Levinson and J. H. Lawrimore, Eds., Bulletin of the American Meteorological Society, 89, 7, S39-S41, doi: 10.1175/BAMS-89-7-StateoftheClimate.
  18. Dickey J. O., S. L. Marcus, J. K. Willis, Ocean cooling: Constraints from changes in Earth's dynamic oblateness (J 2) and altimetry, Geophys. Res. Lett., 35, L18608, doi:10.1029/2008GL035115, 2008.
  19. Willis, J. K., J. M. Lyman, G. C. Johnson, and J. Gilson, Correction to "Recent cooling of the upper ocean". Geophys. Res. Lett., 34, L16601, doi:10.1029/2007GL030323, 2007.
  20. Johnson, G. C., J. M. Lyman, and J. K. Willis, "Global Oceans: Heat Content, " In State of the Climate in 2006, A. Arguez, Ed., Bulletin of the American Meteorological Society, 88, 6, S31-S33, 2007.
  21. Contributing author for Chapter 5, Observations: Oceanic Climate Change and Sea Level, IPCC Fourth Assessment Report, 2007.
  22. G. C. Johnson, J. M. Lyman, J. K. Willis, "Heat Content", in State of the Climate in 2005. Shein, K.A., ed., Bulletin of the American Meteorological Society, 87, S23-S34, 2006.
  23. Wong, T., B. A. Wielicki, R. B. Lee, G.L. Smith, K. A. Bush, and J. K. Willis, Re-examination of the observed decadal variability of earth radiation budget using altitude-corrected ERBE/ERBS nonscanner WFOV data, J. Climate, 19(16), pp. 4028-4040, 2006.
  24. Lyman, J., J. K. Willis, G. Johnson, Recent cooling of the upper ocean, Geophys. Res. Lett., 33, L18604, doi:10.1029/2006GL027033, 2006.
  25. Roemmich, D., J. Gilson, J. Willis, P. Sutton, K. Ridgway, Closing the time-varying mass and heat budgets for large ocean areas: The Tasman Box, J. Climate, 18(13), 2005.
  26. Hansen, J., L. Nazarenko, R. Ruedy, M. Sato,
  27. J. Willis, A. Del Genio, D. Koch, A. Lacis, K. Lo, S. Menon, T. Novakov, J. Perlwitz, G. Russell, G.A. Schmidt, N. Tausnev, Earth's Energy Imbalance: Confirmation and Implications, Science, 308, 2005.
  28. Willis, J. K., D. Roemmich, and B. Cornuelle, Interannual variability in upper-ocean heat content, temperature and thermosteric expansion on global scales, J. Geophys. Res., 109 (C12036), 2004.
  29. Willis, J. K., "Combining satellite and in situ data to make improved estimates of upper-ocean thermal variability on eddy to global scales, " Doctoral Dissertation, Scripps Institution of Oceanography, 2004.
  30. Willis, J. K., D. Roemmich, and B. Cornuelle, Combining altimetric height with broadscale profile data to estimate steric height, heat storage, subsurface temperature, and sea-surface temperature variability, J. Geophys. Res., 108 (C9), 3292, 2003.

Group Home Page
People in this Group
Group Projects
JPL Privacy Statement Sitemap Email Contact Form
FIRST GOV NASA Home Page   Site Manager: Mona Jasnow
  Webmaster: David Martin
  Privacy/Copyright