Characterization of the Eyjafjallajökull ash-plume by means of lidar measurements over the Munich EARLINET-site

Silke Groß; Josef Gasteiger; Volker Freudenthaler; Franziska Schnell; Matthias Wiegner

doi:10.1117/12.869020

8 November 2010 Characterization of the Eyjafjallajökull ash-plume by means of lidar measurements over the Munich EARLINET-site

Silke Groß, Josef Gasteiger, Volker Freudenthaler, Franziska Schnell, Matthias Wiegner

Author Affiliations +

Proceedings Volume 7832, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VI; 78320M (2010) https://doi.org/10.1117/12.869020
Event: SPIE Remote Sensing, 2010, Toulouse, France

Abstract

Measurements of the Eyjafjallajokull-plume were - from the beginning - continuously conducted at Munich, Germany, with two EARLINET Raman- and depolarization-lidars. By means of range corrected signals the temporal development of the ash-plume could be documented in real-time. The optical characterization includes the backscatter coefficient at three wavelengths (1064 nm, 532 nm, 355 nm), and the extinction coefficient and particle linear depolarization ratio at two (532 nm, 355 nm). The maximum extinction coefficient was as high as 0.75km^-1 and wavelength independent - a strong indication for large particles. The particle linear depolarization ratio was 0.35-0.37, indicating non-spherical particles. An inversion of the optical data considering the nonspherical shape of ash particles led to a maximum mass concentration in the order of 1.1 mg/m³ over Munich, however, relative uncertainties of more than 30% must be expected.

Citation Download Citation

Silke Groß, Josef Gasteiger, Volker Freudenthaler, Franziska Schnell, and Matthias Wiegner "Characterization of the Eyjafjallajökull ash-plume by means of lidar measurements over the Munich EARLINET-site", Proc. SPIE 7832, Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VI, 78320M (8 November 2010); https://doi.org/10.1117/12.869020

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available