High-precision cavity ring-down measurements of ẟ13CO2 and ẟ13CH4 along the Eastern North Atlantic onboard the sailing research vessel Fleur de Passion

Jonathan D Bent1, Daphne Donis2, Magdalena Hofmann1, Gregor Lucic1, Daniel F McGinnis2 and The Crew of the Fleur de Passion, (1)Picarro, Inc., Santa Clara, CA, United States, (2)University of Geneva, Department F.-A. Forel for Environmental and Aquatic Sciences (DEFSE), Geneva, Switzerland