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Where did that raindrop come from? Climate model ensemble captures worldwide water isotopes over 45 years
- February 10, 2026 at 10:20 PM
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Water is made of hydrogen and oxygen, and sometimes these atoms are slightly heavier than usual. These heavier forms are called isotopes. As water evaporates or moves through the atmosphere, the amount of these isotopes changes in predictable ways. This can act as a fingerprint, allowing researchers to trace the movement of water at global scales.
Originally published at Phys.org