NASA scientists, using 20 years of satellite data, have identified significant human-caused changes in the global water cycle. These shifts, driven by agriculture and other activities, could affect ecosystems, water management, and resource planning worldwide.

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• NASA study shows human activity is significantly altering the global water cycle.
• Data from 2003-2020 highlights trends in groundwater depletion, seasonal shifts, and extreme weather.
• Research led by NASA’s Goddard Space Flight Center highlights impacts on ecosystems and water management.
• Human activities like irrigation exacerbate drought impacts, as seen in North China.
• Observed changes include earlier snowmelt, shifting growing seasons, and frequent “100-year floods.”
• Satellite data sources include GPM mission, GRACE, and MODIS for precipitation, groundwater, and vegetation health.
• Findings stress the need to evolve Earth system models to include human impacts.
• Study aims to guide sustainable water resource management and prepare for the “new normal.”
• Areas with significant changes require updated water management practices and infrastructure.