Lecture 07

Lecture 07 - Lecture 7: Water Vapor in the Atmosphere Water...

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Lecture 7: Water Vapor in the Atmosphere Water vapor is a minor component of the Earth’s atmosphere, but it is essential for life processes and the Global Climate Engine.
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Mixing Gases with Another Fluid (either gas or liquid) Gases mix with other fluids – water vapor is a gas Water vapor mixes with other atmospheric gases Atmospheric gases mix with liquid water (hydrologic cycle, critical in oceans) In the atmosphere – less water vapor in colder air In liquid water (oceans, lakes, rivers, etc.) – more air in colder water
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Water Vapor in the Atmosphere
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Other Factors that limit Water Vapor in the Atmosphere Water vapor gets into the atmosphere through evaporation More water vapor will be in the atmosphere where liquid water is available More water vapor will be in the atmosphere where surface planet temperatures are warmer (more evaporation)
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Water Vapor in the Lower Troposphere
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Equilibrium between liquid water and water vapor At any temperature above 0°C, some water will be in a vapor phase
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Lecture 07 - Lecture 7: Water Vapor in the Atmosphere Water...

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