Where did that raindrop come from? Tracing the movement of water molecules using isotopes
Tokyo, Japan –Did you know that we can track the journey of a drop of water through space and time? 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. This information can then be used with hydrological modeling, allowing scientists to interpret extreme weather events, such as storms, flooding and droughts, ...