English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Porous aerosol in degassing plumes of Mt. Etna and Mt. Stromboli

MPS-Authors
/persons/resource/persons100858

Borrmann,  S.
Particle Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons100941

Frey,  W.
Particle Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

/persons/resource/persons140247

Molleker,  S.
Particle Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Shcherbakov, V., Jourdan, O., Voigt, C., Gayet, J.-F., Chauvigne, A., Schwarzenboeck, A., et al. (2016). Porous aerosol in degassing plumes of Mt. Etna and Mt. Stromboli. Atmospheric Chemistry and Physics, 16(18), 11883-11897. doi:10.5194/acp-16-11883-2016.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-E6AF-5
Abstract
Aerosols of the volcanic degassing plumes from Mt. Etna and Mt. Stromboli were probed with in situ instruments on board the Deutsches Zentrum fur Luft- und Raumfahrt research aircraft Falcon during the contrail, volcano, and cirrus experiment CONCERT in September 2011. Aerosol properties were analyzed using angular-scattering intensities and particle size distributions measured simultaneously with the Polar Nephelometer and the Forward Scattering Spectrometer probes (FSSP series 100 and 300), respectively. Aerosols of degassing plumes are characterized by low values of the asymmetry parameter (between 0.6 and 0.75); the effective diameter was within the range of 1.5-2.8 mu m and the maximal diameter was lower than 20 mu m. A principal component analysis applied to the Polar Nephelometer data indicates that scattering features of volcanic aerosols of different crater origins are clearly distinctive from angular-scattering intensities of cirrus and contrails. Retrievals of aerosol properties revealed that the particles were "optically spherical" and the estimated values of the real part of the refractive index are within the interval from 1.35 to 1.38. The interpretation of these results leads to the conclusion that the degassing plume aerosols were porous with air voids. Our estimates suggest that aerosol particles contained about 18 to 35% of air voids in terms of the total volume.