Observations of Ground Released Sulfur Hexafluoride Tracer Gas Plumes in Two Utah Winter Storms

Authors

  • Don A Griffith North American Weather Consultants Salt Lake City, Utah
  • George W Wilkerson North American Weather Consultants Salt Lake City, Utah
  • William J Hauze North American Weather Consultants Salt Lake City, Utah
  • Dan A Risch North American Weather Consultants Salt Lake City, Utah

Abstract

Research was conducted for a two month period over the Wasatch Plateau of Central Utah during the winter of 1990-91. A portion of this research was devoted to tracking sulfur hexafluoride (SF6) released from various ground based locations during winter storms. A NOAA King Air research aircraft was the primary mode of tracking the SF6. Seven flights were conducted under IFR conditions when SF6 was released from a foothill or valley location. SF6 was detected on six of these flights. Information on SF6 plume widths, concentrations, vertical extent, and estimated numbers of ice crystals that would be possible if a silver iodide generator had been operated from the SF6 release site are provided for two of these flights.

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Scientific Papers