First-time lidar measurement of water vapor flux in a volcanic plume

The CO2 laser-based lidar ATLAS has been used to study the Stromboli volcano plume. ATLAS measured water
vapor concentration in cross-sections of the plume and wind speed at the crater. Water vapor concentration
and wind speed were retrieved by differential absorption lidar and correlation technique, respectively. Lidar
returns were obtained up to a range of 3 km. The spatial resolution was 15 mand the temporal resolution was
20 s. By combining these measurements, the water vapor flux in the Stromboli volcano plume was found. To
our knowledge, it is the first time that lidar retrieves water vapor concentrations in a volcanic plume.

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