November 15, 2018
Variability in Ozone Structure: Insights from Strategic Ozonesonde Networks
We are all familiar with satellite images of total ozone but fewer know details of the vertical structure of “good” (stratospheric) and “bad” (tropospheric) ozone. Ozonesonde instruments, launched on standard weather balloons and recording ozone at 100m resolution up to 30 km, allow us to characterize ozone variability throughout the atmosphere and on days-years time-scales. We started working with ozonesonde data in the 1992 TRACE-A (Transport and Atmospheric Chemistry near the Equator-Atlantic) and SAFARI-92 field campaigns. Since 1998, more than 10,000 ozone profiles from five strategically designed ozonesonde networks, the North American IONS (Intensive Ozonesonde Network Study) series and the tropical SHADOZ (Southern Hemisphere Additional Ozonesondes; https://tropo.gsfc.nasa.gov/shadoz), have been archived at Goddard. This talk will give examples of how sonde data are used, e.g., studying human impacts on ozone, stratosphere-troposphere coupling, climate oscillations (QBO, ENSO). I will cover our recent efforts in experiments on quality assurance, designed to satisfy the ozone community’s need for greater precision in satellite validation and trends detection.