To the Arctic and Beyond
A Fulbright winner, doctoral student Kimberley Miller is exploring climate change.
When the sun disappears this winter and a thick snow blanket swaddles Finland鈥檚 Arctic tundra, 黑料吃瓜 doctoral student Kimberley Miller will be there, searching for clues to global warming.
Following three summers working at the 黑料吃瓜 research station in Barrow, Alaska, Miller is now in Finland on a Fulbright grant to complete her research. Her doctoral thesis, guided by David Lipson, Ph.D., examines the interaction of climate change and microbial methane cycling in Arctic wetland soils.
Certain microorganisms living in permafrost produce methane, a deadly greenhouse gas, when iron oxide is unavailable to breathe. Miller hypothesizes that where more iron is available, less methane will be produced. Working with Finnish researchers, she will extract soil samples to measure iron and methane content and compare the results with samples from Alaska.
鈥淚鈥檝e never sampled through snow before,鈥� Miller said. 鈥淢ost researchers don鈥檛 measure during winter, but there is increasing evidence of a fair amount of biological activity in the cold.鈥�
Miller鈥檚 exploration will expand knowledge of the interactions between iron and methane in wetland soils, a first step to understanding this important aspect of climate change.
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