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:
- Expand the record of ice core nitrate and sulfate Δ17O measurements on the glacial-interglacial timescale to the Northern Hemisphere.
- 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