Environmental Science
Assuming that the night will remain clear, calm, and unsaturated, the predicted minimum temperature is 32oF. Suddenly the wind speed increases and remains gusty throughout the night. The minimum temperature will most likely be:

About the same as predicted but will occur earlier in the night
Higher than predicted due to mixing
Higher than predicted due to the release of latent heat
Much lower than predicted due to radiational cooling

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Environmental Science
Suppose yesterday morning you noticed ice crystals (frost) on the grass, yet the minimum temperature reported in the newspaper was only 35o F. The most likely reason for this apparent discrepancy is that:

The thermometer was read incorrectly
The newspaper reported the wrong temperature
Temperature readings are taken in instrument shelters more than 5 feet above the ground
The thermometer was in error
The thermometer was read before the minimum temperature was reached for that day

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