Saltzman group publishes the first ice core record of atmospheric hydrogen

The research group of AirUCI faculty member Eric Saltzman has published an article in Nature that describes the first-ever measurements of atmospheric hydrogen from an ice core, thereby providing the longest historical record, by far, of atmospheric hydrogen to date.

Hydrogen is itself not a greenhouse gas, but its reactions with other atmospheric gases leads to increased global warming.  The authors note that with hydrogen being used as a source of green energy, it is important to understand how increases in anthropogenic hydrogen emissions may affect the atmosphere, and having a record of atmospheric hydrogen levels over long timescales is an important step in developing this understanding. 

Their research was spotlighted by Popular Mechanics, Nature, and UCI.