Our group has been involved in numerous projects that have spanned the great state of Alaska.  We have investigated [1] methane fluxes potentially associated with subsea permafrost and methane hydrates near Prudhoe Bay, [2] methane emissions from thermokarst lakes, [3] methane production …

The Great Lakes collectively constitute the largest liquid freshwater environment on the planet.  While freshwater environments are known to be large sources and sinks of greenhouse gases to and from the atmosphere, relatively few measurements have been made across this enormous freshwater …

The tragic events that took place on April 20, 2010 on the Deepwater Horizon rig in the Gulf of Mexico took the lives of 11 people and initiated the release of oil and natural gas into the deep waters of the Gulf of Mexico. Analyses by BP and academic scientists confirmed that natural gas, …

We are making measurements of methane concentration, stable isotopes, and radiocarbon isotopes in natural waters to determine sources, sinks, and fluxes of this greenhouse gas around the planet.

One more specific investigation involves stable isotope theory.  Stable isotope …

The testing of new hypotheses often requires the development of new instruments, methods, and standards.  Our investigations are fundamentally rooted in these essential practices.  

Several projects currently underway include:  

  1. We are developing Cavity- …