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!

 

 

 

 

 

 

 

People:

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

Funding:

NSF ARC 1106317