Figure 4
From: Observing volcanoes with drones: studies of volcanic plume chemistry with ultralight sensor systems
Concentration time profile (a) and excess-CO2/SO2-ratio (b) during measurement flight 1 (see Fig. 3, light blue flight path). The error was calculated according to the procedure described in the Supplementary Information S5. (c) CO2 concentration plotted against the SO2 concentration. All CO2 concentrations shown in the figures are measured with the S300 sensor and subsequently response-corrected according to the procedure described in the methodology.
