The Picarro G2308 gas concentration analyzer radically simplifies soil flux studies by simultaneously measuring three important greenhouse gases— N2O, CH4 and H2O—for soil emissions. Greenhouse gas exchange between soil and the atmosphere is a critical step in the global nitrogen and carbon cycles. The G2308 easily integrates with soil chambers, in a closed or open loop configuration. There is no need to assemble and synchronize separate gas analyzers to observe the behavior of all the major greenhouse gases. The analyzer employs precise cavity ring-down spectroscopy (CRDS) technology to simultaneously measure in situ gas concentrations in real-time to parts-per-billion (ppb) sensitivity with negligible drift. The G2308 features Picarro’s unique software algorithms for automatic water correction. Water (H2O) vapor is measured at parts-per-million (ppm) precision to correct and report N2O and CH4 concentrations in dry mole fraction.