Title: Understanding CH4 and CO2 Emissions from Climate-Sensitive Northern Lakes
Abstract: Terrestrial permafrost currently preserves more carbon than what is found in the atmosphere and all living biomass combined. As warming accelerates in northern regions, this carbon reservoir becomes more vulnerable to decomposition and emission to the atmosphere as methane and carbon dioxide, which further warm the planet. In this dissertation defense, I will discuss how lakes forming in thawing permafrost have the unique ability to access, thaw, and emit ancient carbon to the atmosphere. Specifically, I will discuss novel approaches and findings from 50 lakes across Alaska that have reshaped our understanding of the environmental controls on this climate-sensitive process.