Question

In what ways does water vapour affect atmospheric pressure?​

Answer 1

Answer:Since atmospheric pressure at sea level is always approximately 1 bar, an increase in water vapor at any given location changes it very little. At high altitudes overall atmospheric pressure is lower and increases in water vapor have a greater -- though still relatively small -- impact.

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Answer 2

Answer:

Since atmospheric pressure at sea level is always approximately 1 bar, an increase in water vapor at any given location changes it very little. At high altitudes overall atmospheric pressure is lower and increases in water vapor have a greater -- though still relatively small -- impact