Journal ArticleDOI
Examination of the traditional Raman lidar technique. I. Evaluating the temperature-dependent lidar equations.
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TLDR
The results indicate that, for the range of temperatures encountered in the troposphere, the magnitude of the temperature-dependent effect can reach 10% or more for narrowband Raman water-vapor measurements.Abstract:
The essential information required for the analysis of Raman lidar water vapor and aerosol data acquired by use of a single laser wavelength is compiled here and in a companion paper [Appl. Opt. 42, 2593 (2003)]. Various details concerning the evaluation of the lidar equations when Raman scattering is measured are covered. These details include the influence of the temperature dependence of both pure rotational and vibrational-rotational Raman scattering on the lidar profile. The full temperature dependence of the Rayleigh-Mie and Raman lidar equations are evaluated by use of a new form of the lidar equation where all the temperature dependence is carried in a single term. The results indicate that, for the range of temperatures encountered in the troposphere, the magnitude of the temperature-dependent effect can reach 10% or more for narrowband Raman water-vapor measurements. Also, the calculation of atmospheric transmission, including the effects of depolarization, is examined carefully. Various formulations of Rayleigh cross-section determination commonly used in the lidar field are compared and reveal differences of as much as 5% among the formulations. The influence of multiple scattering on the measurement of aerosol extinction with the Raman lidar technique is considered, as are several photon pulse pileup-correction techniques.read more
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Journal ArticleDOI
Aerosol lidar intercomparison in the framework of the EARLINET project. 3. Raman lidar algorithm for aerosol extinction, backscatter, and lidar ratio
Gelsomina Pappalardo,Aldo Amodeo,Marco Pandolfi,Ulla Wandinger,Albert Ansmann,Jens Bösenberg,Volker Matthias,V. Amirdis,F. De Tomasi,M. Frioud,Marco Iarlori,L. Komguem,Alexandros Papayannis,Francesc Rocadenbosch,Xuan Wang +14 more
TL;DR: An intercomparison of the algorithms used to retrieve aerosol extinction and backscatter starting from Raman lidar signals has been performed by 11 groups of lidar scientists involved in the European Aerosol Research Lidar Network and demonstrates that the data-handling procedures used by all the lidar groups provide satisfactory results.
Book
Aerosol pollution impact on precipitation : a scientific review
Zev Levin,William R. Cotton +1 more
TL;DR: In this paper, the distribution of Atmospheric Aerosols: Transport, transformation and removal, in situ and remote sensing techniques for measuring aerosols, Clouds and Precipitation are presented.
Journal ArticleDOI
The automated multiwavelength Raman polarization and water-vapor lidar Polly XT : the neXT generation
Ronny Engelmann,Thomas Kanitz,Holger Baars,Birgit Heese,Dietrich Althausen,Annett Skupin,Ulla Wandinger,Mika Komppula,Iwona S. Stachlewska,Vassilis Amiridis,Eleni Marinou,Ina Mattis,Holger Linné,Albert Ansmann +13 more
TL;DR: In this paper, the authors present recent changes of the setup of the portable multiwavelength Raman and polarization lidar PollyXT and discuss the improved capabilities of the system by means of a case study.
Journal ArticleDOI
Saharan dust intrusions in the Mediterranean area: Three years of Raman lidar measurements
TL;DR: In this article, a multi-year climatological study of Saharan dust intrusions in the central Mediterranean in terms of aerosol optical parameters vertical profiles is carried out for the first time.
Journal ArticleDOI
Characterization of Asian dust and Siberian smoke with multi‐wavelength Raman lidar over Tokyo, Japan in spring 2003
Toshiyuki Murayama,Detlef Müller,Katsuya Wada,Atsushi Shimizu,Miho Sekiguchi,Tatsuro Tsukamoto +5 more
TL;DR: In this article, a dual-wavelength Raman lidar was used to measure the optical properties of the free troposphere over Tokyo, Japan with a single-scattering albedo at 532 nm.
References
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Book ChapterDOI
Lidar measurement of particles and gases by elastic backscattering and differential absorption
Journal ArticleDOI
Absolute rotational Raman cross sections for N2, O2, and CO2
TL;DR: In this article, the rotational Raman scattering (RRS) from N2, O2, and CO2, excited at 488.0 and 647.1 nm, is characterized by its differential cross section for backscattering, summed over Stokes and anti-Stokes bands and over scattered-light polarizations, which they find to be 1.64 × 10−29 cm2/sr ±8%.
Journal ArticleDOI
Characterization of the vertical structure of Saharan dust export to the Mediterranean basin
Eric Hamonou,Patrick Chazette,Dimitris Balis,François Dulac,X. Schneider,E. Galani,Gérard Ancellet,Alexandros Papayannis +7 more
TL;DR: In this paper, the vertical structure of several North African dust plumes exported to the Mediterranean in 1997 was investigated using two backscatter lidar systems operated in the western and eastern parts of the Mediterranean basin during dust events identified using visible images.
Journal ArticleDOI
LVIII. On the scattering of light by small particles
TL;DR: In this paper, the scattering of light by small particles is studied and the authors propose a method for the detection of small particles in the light scattering of a single photon. But this method requires a large number of particles.