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NASA's WWAO is run by a group of seasoned scientists, engineers, analysts and managers. We are physically headquartered at NASA Jet Propulsion Laboratory in California, but work collaboratively across the entire agency. The WWAO team has expertise in scientific R&D, launching missions and running programs at NASA and beyond, infusing and developing technology, and commercializing and communicating ideas.

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Meet Our Team

Indrani Graczyk

Indrani Graczyk


Indrani manages WWAO’s operations and oversees its strategic direction. She is also the manager of the Commercial Program Office at NASA's Jet Propulsion Laboratory, which is responsible for all industry-sponsored R&D projects, technology transfer and commercialization activities at the lab. Before joining JPL, Indrani worked for many years as an engineer and led the development of several projects in the area of micro-electromechanical systems (MEMS) device development. She also worked for several years as a management consultant, where she analyzed market strategies for a variety of industries including aerospace and defense, telecommunications and information technology. Indrani holds a master’s degree in Mechanical Engineering from MIT and an MBA from the Wharton School of Business.

Forrest Melton

Forrest Melton

Program Scientist

Forrest is a senior research scientist at the NASA Ames Cooperative for Research in Earth Science and Technology and at California State University, Monterey Bay. His interests include using satellite data to improve management of natural resources, remote sensing of evapotranspiration and agricultural water requirements, and ecosystem and carbon cycle modeling. In addition to his work at WWAO, Forrest is an associate program manager for NASA's Earth Science Applied Sciences Water Resources Program. He holds B.S. and M.S. degrees in Earth Systems Science from Stanford University and has authored over forty papers and book chapters on the applications of remote sensing. Forrest has received awards from NASA for his contributions to its Terrestrial Observation and Prediction System and NASA Earth Exchange data-modeling systems. His work on using satellite data to improve water management has been recognized through awards from the California Department of Water Resources, the Federal Labs Consortium and NASA.

Stephanie Granger

Stephanie Granger

Program Strategist

Stephanie develops programs and projects to support water sustainability and agriculture in the U.S. and the developing world. She has many years of experience at JPL in Earth science and remote sensing, ranging from large satellite missions to airborne experiments. Stephanie is particularly interested in connecting science and decision making to improve water management (for example in agriculture) and to improve how we handle drought. She enjoys cycling with her husband, spending time with her three grown-up children, and is especially fond of silly little dogs.

Karen Yuen

Karen Yuen

Capabilities & Project Formulation Lead

Karen leads WWAO's Capabilities and Project Formulation work. She is also the Science Data Applications Lead and Project Communications Manager for NASA's Orbiting Carbon Observatory-2 mission, and the Deputy Program Applications Associate for NASA's Orbiting Carbon Observatory-3 mission. For these missions, her work focuses on user development for science data applications. Karen began her career at NASA's Jet Propulsion Laboratory in 2001. She received her Bachelor’s degree with majors in chemistry and French from Saint Mary’s College/Notre Dame, and pursued an M.A. in Scientific Journalism at New York University while working as an Editorial Assistant for the journal Neuroscience. Her graduate studies, carried out at Université de Paris-VI Jussieu and Université de Paris-V Rene Descartes, focused on Organic Chemistry.

Catalina Oaida

Dr. Catalina Oaida

Stakeholder Engagement Lead

Catalina is an Applied Science Systems Engineer at NASA Jet Propulsion Laboratory. She leads WWAO's stakeholder engagement work, helping devise water needs assessments, developing collaborations with partners, and prioritizing needs for matching to NASA capabilities. In addition to her role at WWAO, she is Team Lead for NASA's Physical Oceanography Distributed Active Archive Center (PO.DAAC), and was previously a hydrology and snow scientist for NASA JPL's Western States Water Mission. Catalina holds a Ph.D. in Atmospheric and Oceanic Sciences from the University of California, Los Angeles, a Master of Science in Atmospheric Science and a Bachelor's degree in Earth System Science and Engineering.


Dr. Amber Jenkins

Information Architecture Lead

Amber leads various WWAO strategic initiatives and its communications efforts. She is passionate about the power of science and technology to change the world. Her interests include creating impactful science programs, harnessing the power of storytelling, and translating science into action for the benefit of society. Prior to joining WWAO, Amber managed JPL’s Climate Science Center, developed high-profile communications campaigns for NASA and hosted JPL’s first 3D movie. She launched NASA’s Climate Change website, which garners 40 million views a year, is featured in op-eds, major media outlets and on TV, and has won multiple Webby Awards including for Best Science Site. Before joining NASA, Amber was an editor for international science magazine Nature and founded Nature Photonics, one of the highest-impact physics publications. She has a Ph.D. in Particle Physics and Diploma from Imperial College London, where her research focused on searching for the Higgs boson at the Fermi National Accelerator Laboratory near Chicago. Amber holds First-Class M.Sci. and M.A. degrees in Natural Sciences from Cambridge University.

Amber McCullum

Dr. Amber Jean McCullum

Applications Transition Lead

Amber Jean McCullum is a researcher and capacity-building specialist in the Earth Science Division at NASA Ames Research Center. Her work in applied sciences focuses on project management, community engagement, and creating remote-sensing training for land and water applications. Beyond her WWAO role, Amber is the lead trainer in land management for NASA's Applied Remote Sensing and Training Program, a team member and engagement coordinator for NASA's Indigenous Peoples Capacity Building Initiative, and an intern coordinator for the Center for Applied Atmospheric Research and Education program with San Jose State University. She received her B.S. in Geology and Environmental Geosciences from the College of Charleston, her M.S. in Geology from San Francisco State University, and her Ph.D. in Environmental Studies from the University of California Santa Cruz. Amber has a passion for using remote sensing for water resource and agricultural applications, science communication, engagement and relationship building with indigenous communities, and student empowerment through STEM education.

Mark Davidson

Mark Davidson

Private Sector Engagement Lead

As WWAO's Water Alliance Lead, Mark builds strategic partnerships with non-profit and for-profit partners in the water sphere. He is also the NASA Jet Propulsion Laboratory Center Technology Transfer Lead for NASA's Small Business Innovation Research unit, where he performs strategic market analysis and translates ideas into promising business plans. Before joining NASA, Mark was Corporate Director of Business Strategy at Northrop Grumman Corporation where he was responsible for evolving the company's portfolio strategy associated with all defense electronics including space, air, ground and maritime domains and naval systems. He also worked as a Corporate Treasurer and Head of Investor Relations at a major aerospace parts distribution company. Mark has an MBA in International Finance from the University of Southern California, a Diploma from the U.S. Naval War College and a B.A. in Physical Geography from the University of California, Los Angeles.

Stephanie Uz

Dr. Stephanie Schollaert Uz

Mission Engagement Lead

Stephanie is the Applied Sciences Manager at NASA Goddard Space Flight Center. Her research background in atmospheric and oceanic science includes investigating the response of ocean biology to physical forcing using satellite data, in-situ measurements, computer models and statistical reconstructions using climate proxy records. She previously coordinated communication for NASA’s Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission – a next generation ocean-color satellite planned for launch in 2022. Working with NASA, NOAA, and university scientists she created ClimateBits – short visualizations that play on YouTube and on Science On a Sphere at museums around the world and explain essential Earth science concepts. Stephanie has a Ph.D. in Atmospheric and Oceanic Science from the University of Maryland, an M.S. in Physical Oceanography from the Graduate School of Oceanography at the University of Rhode Island, and a B.S. in Oceanography from the U.S. Naval Academy.

Cynthia Johnson

Cynthia Johnson

Project Resource Analyst

Cyndi is responsible for WWAO's overall financial operations and based at NASA Jet Propulsion Laboratory. She analyzes funding status and budget performance, and ensures that WWAO complies with institutional and programmatic business requirements. Prior to working at NASA, Cyndi was a business and planning financial analyst at Boeing Satellite Systems for over 14 years. She received her MBA in Finance from Argosy University and a Bachelor’s degree in Professional Writing from the University of Houston.

Lee Johnson

Dr. Lee Johnson

Capabilities Working Group

Lee is a senior research scientist in the School of Natural Sciences at California State University, and a member of the Earth Science Division at NASA Ames Research Center. His research focuses on using remote-sensing data for agricultural purposes, developing computer models to study crop-water balance, studying leaf and plant canopy properties using remote mapping and spectral analysis, and monitoring invasive species.

John Bolten 2

Dr. John Bolten

Capabilities Working Group

John is an Associate Program Manager for NASA’s Applied Sciences Water Resources program, based at NASA Goddard Space Flight Center. His research focuses on using satellite remote-sensing and land-surface water-cycle models to improve the management of ecosystems and water resources. John is involved in several water projects in the Middle East, Africa, southeast Asia, and in the U.S, which address flood monitoring, flood damage assessment and agriculture drought forecasting and mitigation. He has received multiple awards for his research including the 2019 Arthur S. Flemming Award for Applied Science, the 2019 Department of State Award for supporting the drafting and implementation of the U.S. Global Water Strategy, the 2019 Robert H. Goddard Award for Science, as well as multiple NASA Hydrospheric and Biospheric Sciences annual awards for Outstanding Scientific Achievement and Outreach. John is very involved in the scientific community and frequently gives keynote lectures, seminars and tutorials. He received Ph.D. and M.S. degrees in Geology, with an emphasis on Hydrology and Remote Sensing, from the University of South Carolina.

Kim Locke 2.jpeg

Kim Locke

Stakeholder Engagement Working Group

Kim is an Applied Sciences Specialist at NASA’s Goddard Space Flight Center. She helps facilitate the use of Earth observations for more sustainable agriculture, water resources and land management, by connecting researchers and applications developers with decision makers and data users. Kim co-leads activities of Goddard’s Food Security Team and Mission Applications group and helps staff the Climate and Environmental Health, Air Quality and Health, Disasters, and Interagency Chesapeake Bay working groups. As part of WWAO’s Stakeholder Engagement Team, she focuses on engaging stakeholders with WWAO’s large-scale basin activities. Kim served as Assistant Manager of the NASA Harvest Consortium at the University of Maryland, helping coordinate over 30 projects on crop monitoring and global food security. She has coordinated projects at the interface of environmental research, policy, and applications. These range from farmers’ adoption of renewable energy technologies to a resource management plan for the Lake Champlain watershed to co-founding a company building aquaponics systems powered by landfill gas. She received her M.S. in Hydrology and Watershed Management from the Yale School of Forestry and Environmental Studies and a B.A. in Geology from Oberlin College.

NASA's Western Water Applications Office is here to connect water managers, decision makers and stakeholders to NASA data, tools, expertise and information. We welcome feedback, ideas and suggestions for collaboration opportunities, and would love to hear from you!


NASA Western Water Applications Office
NASA Jet Propulsion Laboratory
4800 Oak Grove Drive
M/S 301-320
California 91109.