residence time
atmospheric science
Learn about this topic in these articles:
evolution of Earth’s atmosphere
- In evolution of the atmosphere: Processes
…expressed in terms of the residence time, the average time spent by a molecule in the atmosphere after it leaves a source and before it encounters a sink.
Read More - In evolution of the atmosphere: Photochemical production
…at Earth’s surface) and that residence times for O2 were so short that significant atmospheric concentrations could not accumulate. The best estimate is that pressures of O2 at sea level and ground level were less than 5 × 10−8 PAL.
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