UVolc: A software platform for measuring volcanic SO2 fluxes

We present here a novel stand-alone software platform, UVolc, for remotely sensed measurement of volcanic SO2 emission rates. Such data are important diagnostics of activity conditions, with utility in forecasting measures. This code is made user friendly to enable volcanologists, who are not experts in the underlying physics of spectroscopy, to perform their own measurements. The program provides considerable reduction in errors and far greater operating flexibility than existing analogous code, which, unlike UVolc, can only interface with hardware no longer in manufacture. UVolc will be described here, including a presentation of data collected with this program in the field.

► We present UVolc, a freely available stand-alone application for monitoring volcanic SO2 fluxes.
► Compatible with a wide range of currently available spectrometers.
► Instrumental errors, e.g. stray light, are mitigated against.
► Detailed instructions are provided within the code to expedite user friendly operation by inexperienced workers.
► Successfully tested over a wide range of field conditions.