Depolarization ratio profiling at several wavelengths in pure Saharan dust during SAMUM 2006

By Volker Freudenthaler, M. Esselborn, M. Wiegner, Birgit Heese, M. Tesche, Albert Ansmann, Detlef Müller, Dietrich Althausen, Martin Wirth, A. Fix and 6 more. 2009

591 citations recorded by the source corpus.

Vertical profiles of the linear particle depolarization ratio of pure dust clouds were measured during the Saharan Mineral Dust Experiment (SAMUM) at Ouarzazate, Morocco (30.9◦N, –6.9◦E), close to source regions in May–June 2006, with four lidar systems at four wavelengths (355, 532, 710 and 1064 nm). The intercomparison of the lidar systems is accompanied by a discussion of the different calibration methods, including a new, advanced method, and a detailed error analysis. Over the whole SAMUM periode pure dust layers show a mean linear particle depolarization ratio at 532 nm of 0.31, in the range between 0.27 and 0.35, with a mean Ångström exponent (AE, 440–870 nm) of 0.18 (range 0.04–0.34) and still high mean linear particle depolarization ratio between 0.21 and 0.25 during periods with aerosol optical thickness less than 0.1, with a mean AE of 0.76 (range 0.65–1.00), which represents a negative correlation of the linear particle depolarization ratio with the AE. A slight decrease of the linear particle depolarization ratio with wavelength was found between 532 and 1064 nm from 0.31 ± 0.03 to 0.27 ± 0.04.

Subfields: Atmospheric Science, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/79aa52395d583d065af3b9ab107f3be73249596d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atmospheric Science

In Global and Planetary Change

Citations in the corpus

Portable Raman Lidar Polly XT for Automated Profiling of Aerosol Backscatter, Extinction, and Depolarization (2009, methodology): “The total (superscript T) and the particle (superscript P) depolarization D are computed with the polarization lidar method (PLM; Murayama et al. 1999; Freudenthaler et al. 2009) by using the signal P?”
Modelling lidar-relevant optical properties of complex mineral dust aerosols (2011, background): “…of the Leibniz Institute for Tropospheric Research in Leipzig (δl at 710 nm, Tesche et al., 2009; Tesche et al., 2011), and measurements of the MULIS and POLIS lidars of the Meteorological Institute of the LMU Munich (S and δl at 355 nm and 532 nm, Freudenthaler et al., 2009; Groß et al., 2011).”