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

Abstract The CO 2 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 m and 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.

[1]  H. Jäger,et al.  The Pinatubo eruption cloud observed by lidar at Garmisch‐Partenkirchen , 1992 .

[2]  Luca Fiorani,et al.  A combined determination of wind velocities and ozone concentrations for a first measurement of ozone fluxes with a DIAL instrument during the MEDCAPHOT-TRACE campaign , 1998 .

[3]  Edwin W. Eloranta,et al.  The Determination of Wind Speeds in the Boundary Layer by Monostatic Lidar , 1975 .

[4]  F. G. Fernald.  Analysis of atmospheric lidar observations: some comments. , 1984, Applied optics.

[5]  A. McGonigle,et al.  Total volatile flux from Mount Etna , 2008 .

[6]  Paolo Papale,et al.  The 2007 eruption of Stromboli volcano: Insights from real-time measurement of the volcanic gas plume CO2/SO2 ratio , 2009 .

[7]  P. Mouginis-Mark,et al.  Sun photometer and lidar measurements of the plume from the Hawaii Kilauea Volcano Pu'u O'o vent: Aerosol flux and SO2 lifetime , 2002 .

[8]  W. J. Witteman.  The CO「下2下」 laser , 1987 .

[9]  Antonio Palucci,et al.  Measurement of Mount Etna plume by CO2-laser-based lidar. , 2009, Optics letters.

[10]  D. Haner,et al.  Atmospheric aerosol backscatter measurements using a tunable coherent CO2 lidar. , 1984, Applied optics.

[11]  J. Klett.  Stable analytical inversion solution for processing lidar returns. , 1981, Applied optics.

[12]  Andrew G. Glen,et al.  APPL , 2001 .

[13]  Marco Liuzzo,et al.  A model of degassing for Stromboli volcano , 2010 .

[14]  Sune Svanberg,et al.  Monitoring of volcanic sulphur dioxide emissions using differential absorption lidar (DIAL), differential optical absorption spectroscopy (DOAS), and correlation spectroscopy (COSPEC) , 1998 .

[15]  Mike Burton,et al.  SO2 flux from Stromboli during the 2007 eruption: Results from the FLAME network and traverse measurements , 2009 .