WHY METHANE INCREASING IN THE ATMOSPHERE IS PUSHING US TOWARDS NEW ANALYTICAL APPROACHES FOR STABLE ISOTOPE RATIOS

James W C White, Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States, Sylvia Michel, University of Colorado, Institute of Arctic and Alpine Research, Boulder, CO, United States, Bruce H Vaughn, University of Colorado, Institute of Arctic and Alpine Research, Boulder, United States, John B Miller, NOAA Boulder, ESRL, Boulder, United States, Kenneth Alan Masarie, NOAA, Boulder, CO, United States, Edward J Dlugokencky, NOAA Boulder, Global Monitoring Laboratory, Boulder, United States, Owen Sherwood, University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States and Pieter P Tans, NOAA, Global Monitoring Laboratory, Boulder, United States