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 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
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Joshua Willis

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 Earths 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.


Professional Experience
  • Jet Propulsion Laboratory (2004 - present)
    • Scientist (2006 - present)
    • Caltech Postdoctoral Scholar (2004 - 2006)

Selected Publications
  1. 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., in press.
  2. 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.
  3. Willis, J. K., Lyman, J. M., G. C. Johnson, and J. Gilson, In Situ Data Biases and Recent Ocean Heat Content Variability. J. Atmos. Oceanic. Technol., submitted.
  4. Johnson, G. C., J. M. Lyman, and J. K. Willis. 2007. Global Oceans: Heat Content, In State of the Climate in 2006, A. Arguez, Ed., Bulletin of the American Meteorological Society, 88, 6, S31-S33.
  5. Wijffels, S., J. K. Willis, C. Domingues, P. Barker, N. White, A. Gronell, K. Ridgway, and J. Church, Changing eXpendable Bathythermograph Fall-rates and their Impact on Estimates of Thermosteric Sea Level Rise, J. Atmos. Oceanic Technol., in press.
  6. Willis, J.K., L.-L. Fu, Combining altimeter and subsurface float data to estimate time average circulation in the ocean, J. Geophys. Res., in revision.
  7. Lyman, John M., Willis, Josh K., Johnson, Gregory C., 2006: Recent cooling of the upper ocean, Geophys. Res. Lett., Vol. 33, No. 18, L18604.
  8. Wong, T., B. A. Wielicki, R. B. Lee, G.L. Smith, K. A. Bush, and J. K. Willis, 2006: Re-examination of the observed decadal variability of earth radiation budget using altitude-corrected ERBE/ERBS nonscanner WFOV data, J. Climate, Vol. 19, No. 16.
  9. Contributing author for Chapter 5, "Observations: Oceanic Climate Change and Sea Level," IPCC Fourth Assessment Report.
  10. Hansen, J., L. Nazarenko, R. Ruedy, M. Sato, J. Willis, A. Del Genio, D. Koch, A. Lacis, K. Lo, S. Menon, T. Novakov, J. Perlwitz, G. Russell, G.A. Schmidt, N. Tausnev, 2005: Earth's Energy Imbalance: Confirmation and Implications, Science, 308.
  11. Roemmich, D., J. Gilson, J. Willis, P. Sutton, K. Ridgway, 2005: Closing the time-varying mass and heat budgets for large ocean areas: The Tasman Box, J. Climate, 18(13).
  12. Willis, J. K., 2004: 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.
  13. Willis, J. K., D. Roemmich, and B. Cornuelle, 2004: Interannual variability in upper-ocean heat content, temperature and thermosteric expansion on global scales, J. Geophys. Res., 109 (C12036).
  14. Willis, J. K., D. Roemmich, and B. Cornuelle, 2004: 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.

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