Blowing Snow as a particle source in Antarctica (and more…)

Michael Giordano, Ph.D. led a team of authors from Drexel, University of Colorado, and University of Michigan on a new paper from the DeCarlo Group on the results of the 2ODIAC campaign in Antarctica.

During 2 separate measurement seasons, we analyze Aerosol Mass Spectrometer data in concert with other particle measurements, gas phase measurements, and meteorology to better understand how meteorology can impact aerosol concentrations and composition.  Key to this study is the ability to measure aerosol composition with high time resolution, so that shifts in wind speed can clearly be linked to the aerosol concentration and composition.   Full paper is here so you can get all the details on the measurement.

Some highlights:

  • Sea Salt dominates the submicron composition
  • Windspeed high enough to blow snow, particle concentrations increased
  • Iodine and Bromine were observed at small concentrations in the aerosol and are sometimes correlated and sometimes anti-correlated to ozone concentration.

Reference: Giordano, M. R., Kalnajs, L. E., Goetz, J. D., Avery, A. M., Katz, E., May, N. W., Leemon, A., Mattson, C., Pratt, K. A., and DeCarlo, P. F.: The importance of blowing snow to halogen-containing aerosol in coastal Antarctica: influence of source region versus wind speed, Atmos. Chem. Phys., 18, 16689-16711, https://doi.org/10.5194/acp-18-16689-2018, 2018.

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