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Simon Hook

Photo of Simon Hook


4800 Oak Grove Drive
M/S 183-335

Pasadena, CA 91109





Member of:

Science Division

Division Manager


Simon Hook is the manager of the Science Division at the Jet Propulsion Laboratory. His research is focused on improving our understanding of geologic, hydrodynamic and ecologic processes on planets. He is currently studying large lakes and wildfires on Earth. He also applies his knowledge of terrestrial geologic processes to other planets, in particular Mars.

Simon is an expert on optical radiometry, in particular thermal infrared spectroscopy. He is a member of several instrument teams including ASTER, MODIS, NPP, Landsat and AATSR. He has developed validation sites at Lake Tahoe, CA/NV, Salton Sea CA and Russel Ranch CA for determining the absolute radiometry of airborne and spaceborne mid and thermal infrared radiometers and surface temperature retrieval algorithms. The measurements at the sites are unique and now used as an absolute reference standard for multiple instruments developed by both domestic and foreign research agencies.

Simon continues to develop new instrumentation, in support of scientific studies especially infrared radiometers and spectrometers. He was recently selected as the Principal Investigator for the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS). ECOSTRESS is planned for launch to the International Space Station in 2017. ECOSTRESS will measure the temperature of plants and use that information to study how plant ecosystems use water. He is also working on a new airborne Hyperspectral Thermal Emission Spectrometer (HyTES). A key aspect of Simon's research is the development of new techniques to analyze and extract critical information from optical remotely sensed data, in particular, temperature and emissivity. Techniques developed by Simon are widely used by researchers and have been incorporated into commercial packages and form the basis for the standard temperature and emissivity products from ASTER and MODIS.

Simon is actively involved in planning activities at NASA and other agencies and is currently leading an effort to develop the thermal infrared sensor on the Hyperspectral Infrared Imager (HyspIRI) Mission recommended by NRC Decadal Survey for Earth Science. As part of the HyspIRI work, Simon led the development of the Prototype HyspIRI Thermal Infrared Radiometer (PHyTIR) which will be used on the ECOSTRESS mission.


  • B.S. in Geological Sciences - University of Durham, England (1982)
  • M.Sc. in Geological Sciences - University of Edmonton, Canada (1985)
  • Ph.D. in Geological Sciences - University of Durham, England (1989)

Professional Experience

  • Engineering and Science Directorate Chief Scientist (2015-present)
  • Division Manager, Science Division (2015-present)
  • Senior Research Scientist, Jet Propulsion Laboratory (2015-present)
  • Principal Investigator, ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) (2014-present)
  • Section Manager, Earth Science, Jet Propulsion Laboratory (2014-present)
  • Carbon Cycle and Ecosystems Discipline Program Manager, Jet Propulsion Laboratory (2007-present)
  • Principal Scientist, Jet Propulsion Laboratory (2006-present)
  • Research Scientist, Jet Propulsion Laboratory (1996-2006)
  • Lead Scientist NASA New Millennium Program, Earth Science (2003-2005)
  • US ASTER project scientist (1993-2002)
  • Member of Technical Staff, Jet Propulsion Laboratory (1991-1993)

Selected Publications

Recent Book Chapters

  1. Abrams, M. J. and S. J. Hook 2013. NASA's Hyperspectral Infrared Imager (HyspIRI). In Thermal Infrared Remote Sensing edited by C. Kuenza and S. Dech, Springer, 527 p.
  2. Hook, S. J. W. R. Johnson and M. J. Abrams, 2013. NASA's Hyperspectral Thermal Emission Spectrometer (HyTES). In Thermal Infrared Remote Sensing edited by C. Kuenza and S. Dech, Springer, 527 p.

Peer Reviewed Papers (80+ Publications in Web of Science, last 10 publications below)

  1. Lee, C., M. Cable, S. J. Hook, R. O. Green, S. L. Ustin, D. J. Mandl, and E. M. Middleton, 2015.An introduction to the NASA Hyperspectral InfraRed Imager (HyspIRI) mission and preparatory activities. Remote Sensing of Environment, Vol. 167 Special Issue, pp. 6-19.
  2. Kraemer, Benjamin M.; Hook, Simon; Huttula, Timo; et al. 2015. Century-Long Warming Trends in the Upper Water Column of Lake Tanganyika, PLOS ONE vol 10. Issue: 7, Article Number: e0132490.
  3. Barsi, J. A; J. R. Schott; S. J. Hook; N. G. Raqueno; B. L. Markham and R. G. Radocinski. Landsat-8 Thermal Infrared Sensor (TIRS) Vicarious Radiometric Calibration. Remote Sensing of Environment, vol 6. pp 11607-11626.
  4. Guillevic, P. C.; J. C. Biard; G. C. Hulley; J. L. Privette, S. J. Hook, A. Olisco, F. M. Gottsche, R. Radocinski, M. O. Roman and Y. Y. Yu and I. Csiszar. Validation of Land Surface Temperature products derived from the Visible Infrared Imaging Radiometer Suite (VIIRS) using ground-based and heritage satellite measurements. Remote Sensing of Environment, vol. 154, pp. 19-37.
  5. Veraverbeke, S; N. E. Stavros and S. J. Hook, 2014. Assessing fire severity using imaging spectroscopy data from the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) and comparison with multispectral capabilities. Remote Sensing of Environment, vol. 154, pp 153-163.
  6. Mallick, A.J. Jarvis, E. Boegh, J. B. Fisher, D. T. Drewry, K. P. Tu, S. J. Hook, G. Hulley, J. Ardo, J. Beringer, A. ArainD. Niyogi, 2014. A Surface Temperature Initiated Closure (STIC) for surface energy balance fluxes, Remote Sensing of Environment vol. 141, pp 243-261.
  7. Hulley, G., S. Veraverbeke, S. J. Hook, 2014. Thermal-based techniques for land cover change detection using a new dynamic MODIS multispectral emissivity product (MOD21). Remote Sensing of Environment vol. 140, pp 755-765.
  8. Wilson, R. C., S. J. Hook, P. Schneider, et al., 2013. Skin and bulk temperature difference at Lake Tahoe: A case study on lake skin effect. Journal of Geophysical Research - Atmospheres, Vol. 118, pp. 10332-10346.
  9. Justice, C. O., M. O. Roman, I. Csiszar, E. Vermote, R. E. Wolfe, S. J. Hook, et al., 2013. Land and cryosphere products from Suomi NPP VIIRS: Overview and status. Journal of Geophysical Research - Atmospheres, Vol. 118, pp. 9753-9765.
  10. Veraverbeke, S. and S. J. Hook, 2013. Evaluating spectral indices and spectral mixture analysis for assessing fire severity, combustion completeness and carbon emissions. International Journal of Wildland Fire, vol. 22, pp707-720.