S140 Change in Wind Patterns Associated with a Total Solar Eclipse

Sunday, 7 January 2018
Exhibit Hall 5 (ACC) (Austin, Texas)
Adam Houston, Univ. of Nebraska, Lincoln, NE; and W. M. Shanti

Data in relation to total solar eclipses tends to show a shift in wind speed and direction, as well as a decrease in temperature in the vertical direction. During the 21 August 2017 solar eclipse, data were collected to determine these changes from ground level up to 400 feet, using two separate Unnamed Aircraft Systems (UAS). During each flight, one UAS hovered at 400 feet, while the other continuously moved from 400 feet to ground level, and vice versa, collecting measurements on the wind speed, direction, temperature and pressure within this layer. Thirteen flights were completed before, during and after the eclipse and during a sunset event, each spanning an average of fifteen minutes. Along with this collection of data, a Mobile Mesonet (stationed at ground level) and seventeen radiosondes were also used, compiling data of the temperature, wind speed and direction, relative humidity, and pressure of the atmosphere. The data collected will be used to evaluate the modifications of the atmosphere and to understand any similarities between a solar eclipse and sunset event.

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