What's Happening?
NASA is leveraging its space technology to monitor groundwater changes, addressing concerns over groundwater depletion due to overextraction, drought, and contamination. The agency uses data from the Gravity Recovery and Climate Experiment (GRACE) and its successor,
GRACE Follow-On, to provide monthly estimates of changes in terrestrial water storage. Additionally, NASA's Observational Products for End-Users from Remote Sensing Analysis (OPERA) offers surface displacement products that indicate land subsidence from groundwater withdrawal. The Global Land Data Assimilation System (GLDAS) integrates these data into a land surface model, producing daily outputs. NASA's Applied Remote Sensing Training program (ARSET) is offering a series of online training sessions in April 2026, providing hands-on experience with these datasets. The training is open to the public and is particularly recommended for water resource professionals and managers.
Why It's Important?
NASA's efforts to monitor groundwater changes are crucial for managing water resources, especially in regions facing water scarcity. Groundwater is a vital resource, accounting for a significant portion of freshwater usage in the U.S., with a large percentage used for irrigation. By providing accurate data on groundwater levels, NASA's technology aids in sustainable water management, helping to prevent issues like land subsidence and saltwater intrusion. This initiative supports policymakers, environmentalists, and water managers in making informed decisions to address water scarcity and ensure the long-term availability of groundwater resources.
What's Next?
The upcoming ARSET training sessions will equip participants with the skills to access and analyze NASA's groundwater data, enhancing their ability to manage water resources effectively. As NASA continues to develop and refine its monitoring technologies, it may expand its efforts to include more regions and provide even more detailed data. This could lead to improved water management practices and policies, both domestically and internationally, as stakeholders gain a better understanding of groundwater dynamics.
