The 16 April 2010 major volcanic ash plume over central Europe: EARLINET lidar and AERONET photometer observations at Leipzig and Munich, Germany

被引：178

作者：

Ansmann, A. ^{[1
]}

Tesche, M. ^{[1
]}

Gross, S. ^{[2
]}

Freudenthaler, V. ^{[2
]}

Seifert, P. ^{[1
]}

Hiebsch, A. ^{[1
]}

Schmidt, J. ^{[1
]}

Wandinger, U. ^{[1
]}

Mattis, I. ^{[1
]}

Mueller, D. ^{[1
]}

Wiegner, M. ^{[2
]}

机构：

[1] Leibniz Inst Tropospher Res, D-04318 Leipzig, Germany

[2] Univ Munich, Inst Meteorol, D-80333 Munich, Germany

来源：

GEOPHYSICAL RESEARCH LETTERS | 2010年 / 37卷

关键词：

SAMUM; DUST;

D O I：

10.1029/2010GL043809

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The optically thickest volcanic ash plume ever measured over Germany was monitored with multiwavelength Raman lidars and Sun photometer at Leipzig and Munich. When this ash layer, originating from the Eyjafjoll eruptions in southern Iceland, crossed Leipzig between 2.5 and 6 km height on 16 April 2010, the total 500 nm aerosol optical depth reached 1.0, and the ash-related optical depth was about 0.7. Volume light-extinction coefficients (40-75-minute mean values) measured over Leipzig and Munich at 355 and 532 nm reached values of 400-600 Mm(-1) and ash mass concentrations were on the order of 1000 +/- 350 mg/m(3) in the center of the main ash layer. Extinction-to-backscatter ratios ranged from 55 +/- 5 sr (Munich) to 60 +/- 5 sr (Leipzig) in the main ash layer, and the particle linear depolarization ratio was close to 0.35 at both wavelengths. Rather low photometer-derived Angstrom exponents (500-1640 nm wavelength range) indicated the presence of a significant amount of large ash particles with diameters >20 mu m. Citation: Ansmann, A., et al. (2010), The 16 April 2010 major volcanic ash plume over central Europe: EARLINET lidar and AERONET photometer observations at Leipzig and Munich, Germany, Geophys. Res. Lett., 37, L13810, doi: 10.1029/2010GL043809.

引用

页数：5

共 5 条

[1] Vertical profiling of convective dust plumes in southern Morocco during SAMUM [J].