Climate Change Lengthens Earth's Day
Analysis based on 15 articles · First reported Mar 12, 2026 · Last updated Mar 15, 2026
The findings highlight a previously unquantified impact of climate change, which could affect precision-critical systems like satellite navigation and space research. While not directly impacting financial markets, it underscores the broader, long-term implications of climate change on global infrastructure and technology.
New research from the University of Vienna and ETH Zurich reveals that human-induced climate change is causing the Earth's day to lengthen at an unprecedented rate, approximately 1.33 milliseconds per century. This phenomenon, attributed to the melting of polar ice sheets and mountain glaciers, redistributes water masses from continents to oceans, slowing the Earth's rotation. Scientists, including Mostafa Kiani Shahvandi and Benedikt Soja, state this rate of change is unparalleled for at least 3.6 million years. The study, published in the Journal of Geophysical Research, utilized fossil remains of benthic foraminifera to reconstruct past sea levels and day-length fluctuations. Although imperceptible to humans, these changes are significant for precision-critical systems such as Global Positioning System and space research, which rely on exact information about Earth's rotation.
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