*joshua.k.willis@jpl.nasa.gov*

*M/S 300-323 • 4800 Oak Grove Dr., • Pasadena, CA 91109 • (818)
354-0881*

#### Education

> [Ph.D. Oceanography Years Attended (1998 -- 2004)]{.smallcaps}
>
> *Scripps Institution of Oceanography La Jolla, California*
>
> *University of California, San Diego*
>
> [Advisor]{.smallcaps}: [Dean Roemmich]{.smallcaps}
>
> [Dissertation]{.smallcaps}: *Combining satellite and in situ data to
> make improved estimates of upper-ocean thermal variability on eddy to
> global scales*
>
> [M.S. Physics]{.smallcaps} [Years Attended]{.smallcaps} (1996 -- 98)

## University of California, San Diego La Jolla, California

> [B.S. Physics and Math]{.smallcaps} [Years Attended]{.smallcaps} (1992
> -- 96)

## University of Houston, Honors College Houston, Texas

#### Employment

> [Scientist Years Employed]{.smallcaps} (2006 -- [present]{.smallcaps})

## Jet Propulsion Laboratory Pasadena, California

-   Studied the global mean sea level budget using data from satellite
    altimeters, satellite measurements of the Earth's time-varying
    gravity field, and in situ data from the Argo array of profiling
    floats.

-   Studied global- and basin-scale, climate-related ocean variability
    using a variety of data analysis techniques and ocean models.

-   Contributed to the ECCO ocean data assimilation effort.

> [Caltech Postdoctoral Scholar Years Employed]{.smallcaps} (2004 --
> [2006]{.smallcaps})

## Jet Propulsion Laboratory Pasadena, California

-   Developed an estimate of global, mid-depth ocean circulation from a
    combination of Argo and altimeter data.

-   Studied global- and basin-scale, climate-related ocean variability
    using a variety of data analysis techniques and ocean models.

-   Contributed to the ECCO ocean data assimilation effort.

> [Graduate Student Researcher Years Employed]{.smallcaps} (1997 --
> [2004]{.smallcaps})

## University of California, San Diego La Jolla, California

-   Developed and used data analysis techniques to study basin-wide to
    global ocean variability on seasonal to interannual time scales.
    (*SIO*, 1998 -- 2004)

-   Data acquisition and analysis in search of extra-solar planet
    transits. (*Physics*, 1997 -- 98)

> [Tutor of Math and Physics Years Employed]{.smallcaps} (2000 --
> [2003]{.smallcaps})

## Bridges Test Preparation and Tutoring La Jolla, California

-   One-to-one and small group tutoring of secondary-level mathematics
    from arithmetic to Advanced Placement calculus and physics.

> [Teaching Assistant Years Employed]{.smallcaps} (1996 -- 97)

## University of California, San Diego La Jolla, California

-   Taught recitation and problem session for lower division physics
    class.

-   Conducted two undergraduate physics laboratories.

> [Undergraduate Researcher Years Employed]{.smallcaps} (1994 -- 95)

## University of Houston, Space Vacuum Epitaxy Center Houston, Texas

-   Contributed to the development and analysis of optical sensors.

-   Produced and measured surface acoustic wave devices using
    photo-lithography on Yttrium-Barium-Copper-Oxide superconductors.

##### Awards and Honors

-   2002: Outstanding Student Poster Award, WOCE and Beyond Conference,
    Austin, TX.

-   1997: Outstanding Teaching Assistant Award, University of
    California, San Diego.

-   1996: Cum Laude, with membership in the Honors College, University
    of Houston.

-   1994-95: NSF funded Research Experience for Undergraduates Program.

-   1992-96: College of Natural Science and Mathematics Fellow,
    University of Houston.

-   1992-96: Cullen Leadership Scholarship, University of Houston.

##### 

##### Experience

-   Extensive use of data analysis techniques on large, historical,
    oceanographic datasets, with emphasis on objective analysis and EOF
    techniques.

-   Use of a regional, quasi-geostrophic, assimilation model to describe
    mid-latitude eddy variability.

-   Analysis climate-related ocean signals using output from global
    ocean data assimilation models.

##### 

##### Publications

> 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.
>
> 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.
>
> 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.
>
> 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.
>
> 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, "Earth\'s Energy Imbalance:
> Confirmation and Implications," *Science*, 308, 2005.
>
> 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.
>
> 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.
>
> Lyman, J., J. K. Willis, G. Johnson, "Recent cooling of the upper
> ocean," *Geophys. Res. Lett.*, *33*, L18604, doi:10.1029/2006GL027033,
> 2006.
>
> Contributing author for Chapter 5, "Observations: Oceanic Climate
> Change and Sea Level," IPCC Fourth Assessment Report.
>
> 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.
>
> Willis, J. K., Lyman, J. M., G. C. Johnson, and J. Gilson, 2007a: In
> Situ Data Biases and Recent Ocean Heat Content Variability. *J. Atmos.
> Oceanic. Technol.*, submitted.
>
> 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.*, submitted.
>
> Willis, J. K., D. P. Chambers, and R. S. Nerem, "Closing the Globally
> Averaged Sea Level Budget on Seasonal to Interannual Time Scales," *J.
> Geophys. Res.*, submitted.
>
> G. C. Johnson, J. M. Lyman, J. K. Willis, "Heat Content", *in* State
> of the Climate in 2006. Shein, K.A., ed., *Bulletin of the American
> Meteorological Society*, 87, S23-S34, in preparation.
>
> Willis, J.K., L.-L. Fu, "Combining altimeter and subsurface float data
> to estimate time average circulation in the ocean," in preparation.

##### Invited Talks

2005:

-   NASA Sea Level Meeting, Washington, D.C.

-   IAMAS Meeting, Beijing, China

-   CLIVAR/OOPC/GOOS/Argo/CPPS Meeting, Concepción, Chile

-   Scripps Institution of Oceanography

2007:

-   National Center for Atmospheric Research, Boulder, CO

-   Oregon State University, Corvallis, OR