Multiple choice

What difference in relative humidity and dew point would give the best chance of precipitation?

  1. 2o C

  2. 8o C

  3. 12oC

  4. 5oC
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A Correct answer
Explanation

A smaller difference between the air temperature and the dew point indicates that the air is closer to saturation, which corresponds to a higher relative humidity. Therefore, a very small difference like 2 degrees C offers the highest relative humidity and the best chance of precipitation.

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