Winds were gusty again on Wednesday with the highest wind speeds reported late in the evening. This is not what a typical wind speed pattern throughout the day in December. The featured chart presents hourly wind speed climatologies for the Ames Airport for the months of April, August, and December. Each trace shows the general pattern of highest speeds during the daylight hours. This is due to mixing of higher speed air above the ground down within the boundary layer as the sun heats the ground, which drives the mixing.

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Tags:   wind