Comparison of a Gas Chromatograph and a Cavity Ringdown Spectrometer for Flux Quantification of Nitrous Oxide, Carbon Dioxide and Methane in Closed Soil Chambers Derek Fleck1, Yonggang He1, Donald Herman2, Serena Moseman-Valtierra3, Gloria Jacobson1 1 Picarro Inc, 3105 Patrick Henry Drive, Santa Clara, CA 95054 2 College of Natural Resource, UC Berkeley, 130 Mulford Hall, University of California, Berkeley, CA, 94720-3114 3 University of Rhode Island, CBLS 489, Kingston, RI 02881