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 Carbon Cycle And Ecosystems: People
Gregory  Halverson's Picture
Jet Propulsion Laboratory
M/S 233-300
4800 Oak Grove Drive
Pasadena, CA 91109
Curriculum Vitae:

Gregory Halverson

Gregory develops geospatial data processing software. Current projects include the ECOSTRESS evapotranspiration product generation software, the MEaSUREs land-surface temperature record, water temperature monitoring in the California Bay Delta, and drought monitoring applications of remotely sensed evapotranspiration in New Mexico.

  • M.Sc. Geographic Information Science, California State University, Northridge (2017)
  • A.A. Computer Programming, Los Angeles Pierce College (2015)
  • B.A. History, California State University, Northridge (2010)
  • A.A. Psychology, Los Angeles Pierce College (2009)

Research Interests
  • Drought monitoring
  • Evapotranspiration
  • Land-surface temperature
  • Water temperature
  • Geospatial data science
  • Computer programming


ECOSTRESS (ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station) Icon ECOSTRESS (ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station)
The ECOsystem Spaceborne Thermal Radiometer on Space Station (ECOSTRESS) mission will study how the worlds ecosystems use water..

The Applied Sciences' DEVELOP National Program addresses environmental and public policy issues through interdisciplinary research projects that apply the lens of NASA Earth Observing Systems to community concerns around the globe.

NASA's Earth Science Program is dedicated to advancing Earth remote sensing and pioneering the scientific use of satellite measurements to improve human understanding of our home planet.

Professional Experience
Jet Propulsion Laboratory, Pasadena, CA (2015-Present)
  • Scientific Applications Software Engineer (2019-Present)
  • JPL Visiting Student Research Program (California State University Northridge) (2017-2019)
  • Year-Round Internship (Columbus Technologies & Services) (2016-2017)
  • NASA DEVELOP Costa Rica Agriculture (2016)
  • Volunteer Agreement (2015-2016)
  • NASA DEVELOP New Mexico Water Resources (2015)

Selected Publications
  1. Halverson, G., Lee, C., Hulley, G., Hestir, E., Cawse-Nicholson, K., Bergamaschi, B., Palmieri, B., Osti, A., Acuña, S., Tuffilaro, N., Radocinski, R., Rivera, G., Ade, C., Sommer, T. "Multi-Decadal Examination of Thermal Habitat Suitability for the Endangered Delta Smelt in the San Francisco Estuary using Landsat 5, 7, and 8" (in preparation)
  2. Halverson, G., Cawse-Nicholson, K., Fisher, J., Braverman, A., Johnson, M., Kang, E., Li, M., Gunson, M., Hook, S. "Statistical Uncertainty Quantification and Sensitivity Analysis for the ECOSTRESS PT-JPL Evapotranspiration Algorithm" (in preparation)
  3. Fisher, J.B., Lee, B., Purdy, A.J., Halverson, G.H., Dohlen, M.B., Cawse-Nicholson, K., Wang, A., Anderson, R.G., Aragon, B., Arain, M.A., Baldocchi, D.D., Baker, J.M., Barral, H., Bernacchi, C.J., Bernhofer, C., Biraud, S.C., Bohrer, G., Brunsell, N., Cappelaere, B., Castro-Contreras, S., Chun, J., Conrad, B.J., Cremonese, E., Demarty, J., Desai, A.R., De Ligne, A., Foltýnová, L., Goulden, M.L., Griffis, T.J., Grünwald, T., Johnson, M.S., Kang, M., Kelbe, D., Kowalska, N., Lim, J.-H., Maïnassara, I., McCabe, M.F., Missik, J.E.C., Mohanty, B.P., Moore, C.E., Morillas, L., Morrison, R., Munger, J.W., Posse, G., Richardson, A.D., Russell, E.S., Ryu, Y., Sanchez-Azofeifa, A., Schmidt, M., Schwartz, E., Sharp, I., Šigut, L., Tang, Y., Hulley, G., Anderson, M., Hain, C., French, A., Wood, E., Hook, S., in press. "ECOSTRESS: NASA's next generation mission to measure evapotranspiration from the International Space Station" Water Resources Research
  4. Cawse-Nicholson. K., Braverman, A., Kang, E., Li, M., Johnson, M., Halverson, G., Anderson, M., Hain, C., Gunson M., Hook S. (2020) "Sensitivity and uncertainty quantification for the ECOSTRESS evapotranspiration algorithm-DisALEXI" International Journal of Applied Earth Observation and Geoinformation, 89,
  5. Cooley, S., Williams, C., Lee, C., Fisher, J., Perret, J., Halverson, G. (2019) ,"Improving drought assessment with evapotranspiration data: a case study in Guanacaste, Costa Rica" Ecological Applications, 29(2),
  6. Purdy, A., Fisher, J., Goulden, M., Colliander, A., Halverson, G., Tu, K., Famiglietti, J. (2018) "SMAP soil moisture improves global evapotranspiration" Remote Sensing of Environment,, 219,
  7. Famiglietti, C., Fisher, J., Halverson, G., Borbas, E. (2018) "Global Validation of MODIS Near-Surface Air Temperature and Dew Point" AGU Geophysical Research Letters, 45
  8. Colliander, A., Fisher, J., Halverson, G., Merlin, O., Misra, S., Bindlish, R., Jackson, T., Yueh, S. (2017) "Spatial Downscaling of SMAP Soil Moisture Using MODIS Land Surface Temperature and NDVI During SMAPVEX15" IEEE Geoscience and Remote Sensing Letters, 14 (11),

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