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Chad Higgins

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From the Autonomous Systems @ OSU conference. http://research.oregonstate.edu/unmanned-systems-initiative

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Chad Higgins

  1. 1. UAS and Distributed Temperature Sensing Reveal Previously Unseen Atmospheric Processes Chad Higgins, Heather Holmes, Rob Stoll, David Blunck, Ziru Liu, Robert Predosa, Jason Kelley, Steve Drake, Michael Wing
  2. 2. Traditional vs. UAS • Expensive • Permanent • Long Term • Long installation cycles • Low resolution • ‘representative’ • Inexpensive • Transient • Exploratory • High resolution • Can create an ensemble https://www.climate.gov/news-features/featured-images/tracking-greenhouse-gases- noaa%E2%80%99s-tall-towers
  3. 3. UAV Platform • Lift capacity: 2kg • Flight time: ~30 minutes (depends on conditions) • Advantages: flight position is controllable, ‘temporary tall tower’ • Disadvantages: limited flight times, legal operation concerns
  4. 4. Distributed Temperature Sensing • Ratio intensity of select returned wavelengths is temperature dependent • Range resolved: 12.5 cm • Time resolution 1s • Total range: 5km 900mm
  5. 5. Morning Transition Sharpness of gradient ~4minutes or 250m Flight #6 Flight #7 Sunrise LandingandBattery change
  6. 6. • We can capture a broad range of spatial and temporal scales, more than ever before. • Morning transition: vertical mixing weakened grad(T)amplification of unstable modes • UAS will allow for new discovery in atmospheric science as we move to more ‘nontraditional’ locations that are indeed more representative. Conclusions
  7. 7. Thank You! http://newag.bee.oregonstate.edu/

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