Earth observation and water securityNASA Earth Observatory
Satellite study maps a human fingerprint across Earth’s water cycle
Researchers used more than two decades of gravity measurements to identify 40 regions where land-water trends align with human activity.
By TomorrowNews · AI-assisted briefing · Briefing published 21 October 2026
AI-generated illustration — not a photograph of the event. Conceptual editorial rendering, not documentary evidence. · TomorrowNews / AI-generated illustration
The analysis used GRACE and GRACE-FO observations from April 2002 through November 2025. The identified regions span every nonpolar continent except Australia and include patterns associated with irrigation, reservoirs and land-use change.
The approach provides finer spatial detail than earlier global studies but less temporal detail. The results show associations with human activity, not a single cause for every local change.
Go to the source
This is an original summary, not a republication of the full report.
