Hydrology - Water Resources - Ecosystems - Environment
I look to better understand the global water cycle including its relation to human activity, the environment, and the earth system.
Check out the site and please reach out if you see an opportunity to collaborate or would like to talk about any previous or ongoing projects, publications , teaching, or adventures.
Massoud, E.C., Purdy, A.J., Christoffersen, B.O., Xu, C., Santiago, L. (in press) Bayesian inference of hydraulic properties in and around a Douglas White Fir using a process based ecohydrologic model Environmental Modelling & Software.
Purdy, A.J., Fisher, J.B., Goulden, M.L., Colliander, A., Halverson, G., Tu, K., Famiglietti,J.S., (2018), SMAP soil moisture improves global evapotranspiration. Remote Sensing of Environment 219: 1-14 https://doi.org/10.1016/j.rse.2018.09.023
Talsma, C.J., Good, S.P., Miralles, D.G., Fisher, J.B., Martens, B., Jiménez, C., Purdy, A.J., (2018) Sensitivity of Evapotranspiration Components in Remote Sensing-Based Models. Remote Sens. 10, 1601; doi:10.3390/rs10101601
Massoud, E.C., Purdy, A.J., Miro, M., Famiglietti, J.S. (2018) Projecting groundwater storage changes in California’s Central Valley. Scientific Reports 8 (1), 12917
Talsma, C., Good, S.P., Jimenez, C., Martens, B., Fisher, J.B., Miralles, D., McCabe, M., Purdy, A.J. (2018) Partitioning of Evapotranspiration in Remote Sensing-based Models Agricultural and Forest Meteorology 260, 131:143.
Joshua B. Fisher, Elizabeth Middleton, Forrest Melton, Martha Anderson, Simon Hook, Christopher Hain, Richard Allen, Matthew McCabe, Jean-Pierre Lagouarde, Kevin Tu, Dennis Baldocchi, Philip A. Townsend, Ayse Kilic, Johan Perret, Diego Miralles, Duane Waliser, A.J. Purdy, Andrew French, David Schimel, James S. Famiglietti, Graeme Stephens, Eric F. Wood, (2017) The Future of Evapotranspiration: Global requirements for ecosystem functioning, carbon and climate feedbacks, agricultural management, and water resources. Water Resources Research 53(4): 2618-2626
Purdy, A.J., Fisher, J.B., Goulden, M.L., Famiglietti,J.S., (2016), Ground heat flux: An analytical reveiew of 6 models evaluated at 88 sites and globally. JGR Biogeosciences. 121, 3045–3059, doi:10.1002/2016JG003591. EOS Research Spotlight Dec 6, 2016
Castle, S., Thomas, B., Reager, J.T., Purdy, A.J., Lo, M., Famiglietti, J.S., (2016), Remote detection of water management impacts on evapotranspiration in the Colorado River Basin. Geophysical Research Letters 43, 5089–5097, doi:10.1002/2016GL068675.
Melton, F.S., Johnson, L.F., Lund, C.P., Pierce, L.L., Michaelis, A.R., Hiatt, S.H., Guzman, A., Adhikari, D.D., Purdy, A.J., Rosevelt, C., Votava, P., Trout, T.J., Temesgen, B., Frame, K., Sheffner, E.J., Nemani, R.R., (2012), Satellite irrigation management support with the terrestrial observation and prediction system: a framework for integration of satellite and surface observations to support improvements in agricultural water resource management. IEEE Journal of Selected Topics in Applied Earth Observation and Remote Sensing 5(6): 1709-1721. doi:10.1109/JSTARS.2012.2214474.
Purdy, A.J., David, C.H., Sikder, M.S., Reager, J.T., Jones, N.L., Matin, M.A., J. (in prep for SERVIR special issue in Ecological Frontiers) GRACE satellites observe the fingerprint of water management in Bangladesh
I have been fortunate to be involved in teaching at many levels throuhgout my academic career. Below I detail the university level courses I have been involved with. In addition to the courses I have received formal tutoring training from the Cal State System and taken a course in curiculum development and engaged learning from the University of California.
Welcome to my site. I am currently a postdoctoral scholar in the Carbon and Ecosystems Group at the NASA Jet Propulsion Laboratory.
Growing up in California, I have always been enamored with the outdoors. It wasn't until my senior year at University of San Diego that I realized I didn't want to be a manufacturing engineer. Subsequently, I forced my way into a CEQA course to fulfill an elective. That course set me on a path to explore and understand how humans and the environment interact.
At CSU Monterey Bay, I earned a MS in Coastal Watershed Science and Policy. During my time in Monterey, I worked with a team of NASA Ames scientists that applied satellite data sets to support on-farm management.
After my Masters, I headed to UC Irvine where earned a MS and PhD in Earth System Science under the advisement of Jay Famiglietti. At Irvine I honed my skills in remote sensing and geospatial analyses. My dissertation focused on advancing satellite-driven evapotranspiration algorithms and applying these estimates to link the carbon and water cycles from space.
Outside of work, I enjoy surfing, camping, and adventuring with my wife Katherine and dog Sully.
My contact information is listed at the top my CV. Contact me if you see an oportunity to colaborate or to chat science, education, or adventures.