The MultiGAS station at Poas produces continuous time series of volcanic gas concentrations and ratios. These data are managed by OVSICORI.Documentation Index
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Gas Concentrations
Time series of H₂O, CO₂, and SO₂ concentrations measured in the volcanic plume near the active crater.
Gas Ratios
Derived ratios such as CO₂/SO₂ that help distinguish magmatic from hydrothermal gas sources and track changes in volcanic activity.