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

@article{citeulike:3944060, abstract = {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 \r{A}ngstr\"{o}m 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.}, author = {Freudenthaler, Volker and Esselborn, Michael and Wiegner, Matthias and Heese, Birgit and Tesche, Matthias and Ansmann, Albert and M\"{u}ller, Detlef and Althausen, Dietrich and Wirth, Martin and Andreas, F. I. X. and Ehret, Gerhard and Knippertz, Peter and Toledano, Carlos and Gasteiger, Josef and Garhammer, Markus and Seefeldner, Meinhard}, citeulike-article-id = {3944060}, citeulike-linkout-0 = {http://dx.doi.org/10.1111/j.1600-0889.2008.00396.x}, citeulike-linkout-1 = {http://www.ingentaconnect.com/content/mksg/teb/2009/00000061/00000001/art00012}, citeulike-linkout-2 = {http://www3.interscience.wiley.com/cgi-bin/abstract/121571679/ABSTRACT}, doi = {10.1111/j.1600-0889.2008.00396.x}, issn = {0280-6509}, journal = {Tellus B}, keywords = {aerosols, calibration, depolarization, lidar, lidar\_ratio, model\_calculation, multi\_wavelength, polarization, saharan\_dust, scattering, sunphotometer}, number = {1}, pages = {165--179}, posted-at = {2009-03-03 19:55:34}, priority = {2}, publisher = {Blackwell Publishing}, title = {Depolarization ratio profiling at several wavelengths in pure Saharan dust during SAMUM 2006}, url = {http://dx.doi.org/10.1111/j.1600-0889.2008.00396.x}, volume = {61}, year = {2009} }

TY - JOUR ID - citeulike:3944060 L3 - citeulike-article-id:3944060 N2 - 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. IS - 1 JF - Tellus B SN - 0280-6509 EP - 179 TI - Depolarization ratio profiling at several wavelengths in pure Saharan dust during SAMUM 2006 PB - Blackwell Publishing VL - 61 SP - 165 KW - aerosols KW - calibration KW - depolarization KW - lidar KW - lidar_ratio KW - model_calculation KW - multi_wavelength KW - polarization KW - saharan_dust KW - scattering KW - sunphotometer AU - Freudenthaler, Volker AU - Esselborn, Michael AU - Wiegner, Matthias AU - Heese, Birgit AU - Tesche, Matthias AU - Ansmann, Albert AU - Müller, Detlef AU - Althausen, Dietrich AU - Wirth, Martin AU - Andreas, FIX AU - Ehret, Gerhard AU - Knippertz, Peter AU - Toledano, Carlos AU - Gasteiger, Josef AU - Garhammer, Markus AU - Seefeldner, Meinhard PY - 2009/// UR - http://dx.doi.org/10.1111/j.1600-0889.2008.00396.x ER -