Comment on “Evolution of CO2, SO2, HCl and HNO3 in the volcanic plumes from Etna” by Voigt et al. [Geophys. Res. Lett.; 41, doi:10.1002/2013GL058974]

Editor’s Note:
The following comment and reply arise from an article published
in Geophysical Research Letters by Voigt et al. (2014).
The article addresses a volcanology topic, and the commenters
take issue with some conclusions and offer an analysis of their
own. Voigt and co-authors have responded.
Why is this comment-and-reply being published in
the Bulletin? It is because Geophysical Research Letters
is one of a number of journals that do not offer any
published forum for discussion of the papers they publish.
This is a matter of editorial policy, and a decision
for each journal.
The Bulletin of Volcanology does provide a forum for
discussion of articles published. When contacted by Marcello
Liotta with the request that the Bulletin consider hosting a
discussion of the Voigt et al. volcanology article in GRL, I
agreed to do so if the GRL authors were willing to engage with
the comment. Voigt and co-authors were willing to do so, and
have been allowed a small amount of additional space to
summarize for Bulletin readers the key points of the GRL
paper under discussion before responding directly to the comment
from Liotta and Rizzo.
I hope that Bulletin readers find the discussion and reply of
interest.
James D.L. White
Executive Editor, Bulletin of Volcanology