Abstract: The title of this presentation was inspired by my response to a reviewer comment on a recent paper: the technique proposed … requires a sophisticated instrumentation that is largely restricted to heavy airborne platforms…hence limiting the application of this technique… That review motivates me to broadly justify the science that we in the Atmospheric Chemistry and Chemical Processes group at NOAA are pursuing. I’ll share an overview of our airborne and land-based measurements with the “undercurrent” theme of stressing their value to the atmospheric science community. We are mandated by congress to “observe and monitor” the stratosphere for aerosols and gases relevant to ozone, climate, and assessment of stratospheric radiation management, a high-profile approach to geoengineering. I’ll highlight connections between our different approaches to sampling the stratosphere: via balloon-borne instrumentation with quite regular launches, as well as via a heavy airborne platform. I’ll then focus on the findings from the paper, which addressed large pyrocumulonimbus (pyroCb) events. We recognized aerosol “fingerprints” of pyroCb smoke in the stratosphere, developed a technique to attribute stratospheric aerosol to pyroCb, and constrained their long-term influence on the stratosphere.
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The Physics Frontiers Centers (PFC) program supports university-based centers and institutes where the collective efforts of a larger group of individuals can enable transformational advances in the most promising research areas. The program is designed to foster major breakthroughs at the intellectual frontiers of physics by providing needed resources such as combinations of talents, skills, disciplines, and/or specialized infrastructure, not usually available to individual investigators or small groups, in an environment in which the collective efforts of the larger group can be shown to be seminal to promoting significant progress in the science and the education of students. PFCs also include creative, substantive activities aimed at enhancing education, broadening participation of traditionally underrepresented groups, and outreach to the scientific community and general public.