Becky Alexander


In this project we focus on new measurements of the isotopic composition of sulfate and nitrate from Greenland ice cores with the following two objectives:

  1. Expand the record of ice core nitrate and sulfate Δ17O measurements on the glacial-interglacial timescale to the Northern Hemisphere.
  2. Investigate whether changes in the oxidative capacity of the atmosphere may have played a role in CH4 variability during abrupt climate changes (Bølling-Allerød and Interstadial-12).

We are in the middle of completing our ice core measurements. Stay tuned for more information!



Becky Alexander (sole P.I.) and Lei Geng (postdoc)


NSF ARC 1106317