Figure 1 shows the location of regional upper-air sounding systems, also indicating how spatially sparse and infrequent operational real-time observations were during the last five years.
Upper-air soundings were performed four times per day with an average of seven days per IOP.
In recent years, upper-air sounding
efforts in the Southeast have been conducted by the University of North Carolina at Asheville; the University of North Carolina at Charlotte; the University of Alabama in Huntsville; Simmons Army Airfield in Fort Bragg, North Carolina; Redstone Arsenal in Huntsville, Alabama; and the National Oceanic and Atmospheric Administration (NOAA) Atmospheric Turbulence and Diffusion Division Laboratory in Oak Ridge, Tennessee, among others.
The tiered "system of systems" architecture envisioned for in situ upper-air soundings
identified GRUAN as the reference tier, the GCOS Upper-Air Network (GUAN) as a baseline capability, and the remainder of the radiosonde network providing regional detail (Seidel et al.
Thirteen members of the AMS Southwest Pennsylvania Chapter took a trip to the National Weather Service in Pittsburgh, Pa where they experienced the releasing of a weather balloon and learned about upper-air soundings