Changes in fire frequency and intensity have the potential to affect climate through a number of different mechanisms. Asst. Professor Jim Randerson and colleagues from the University of Alaska use micrometeorological techniques to assess how vegetation regrowth following fire affects the seasonal dynamics and isotopic composition of atmospheric CO². This site is part of a broader chronosequence study of the effects of burn severity on carbon storage in interior Alaska. Measurements in a nearby mature unburned forest serve as a control.