residence time

hydrologic cycle

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July 13, 2026

Quick Summary

The hydrologic cycle, or water cycle, describes the continuous circulation of water between the Earth and its atmosphere. Key processes include evaporation, transpiration, condensation, precipitation, and runoff.

The residence time of water varies significantly across different reservoirs. For instance, water in the oceans can remain for over 3,000 years, while water in the atmosphere typically stays for only about 10 days before returning to Earth as precipitation. Water in lakes, rivers, ice, and groundwater has variable residence times between these extremes.12

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hydrosphere
General nature of the cycle
…water cycle have different water residence times. Residence time is defined as the amount of water in a reservoir divided by either the rate of addition of water to the reservoir or the rate of loss from it. The oceans have a water residence time of 3,000 to 3,230 years;…
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…water cycle have different water residence times. Residence time is defined as the amount of water in a reservoir divided by either the rate of addition of water to the reservoir or the rate of loss from it. The oceans have a water residence time of 3,000 to 3,230 years;…
Read More