Application of lidar depolarization measurement in the atmospheric boundary layer: Effects of dust and sea‐salt particles
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In this article, the atmospheric boundary layer with a polarization lidar, a Sun photometer, and a high volume sampler at a coastal area of Tokyo Bay was intensively observed.Abstract:
We intensively observed the atmospheric boundary layer with a polarization lidar, a Sun photometer, and a high-volume sampler at a coastal area of Tokyo Bay. The purpose of the observation is to investigate a phenomenon discovered in the past summer: relatively high depolarization ratio events (≃ 10% at peak) in the lower atmosphere associated with sea breeze. From the chemical analyses of the simultaneously sampled aerosols, we found that the depolarization ratio might be related to crystallized sea salt and dust particles. A boundary structure was clearly revealed by the depolarization ratio in the lower atmosphere, which might correspond to the mixed layer (the internal boundary layer) or the sea breeze in which crystallized sea salt and/or dust particles were diffused. We also presented the first numerical calculation on the depolarization ratio of the cubic particles to apply crystallized sea-salt (NaCI) particles by the dipole discrete approximation (DDA) method: the calculation yields 8-22% of depolarization ratio for the effective size larger than 0.8 μm at the investigated wavelength (532 nm).read more
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Journal ArticleDOI
The CALIPSO Automated Aerosol Classification and Lidar Ratio Selection Algorithm
Ali Omar,David M. Winker,Mark A. Vaughan,Yongxiang Hu,Charles R. Trepte,Richard Ferrare,Kam-Pui Lee,Chris A. Hostetler,Chieko Kittaka,Raymond R. Rogers,Ralph Kuehn,Zhaoyan Liu +11 more
TL;DR: In this paper, the extinction-to-backscatter ratio (lidar ratio) selection scheme for the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) aerosol products is described.
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Sea Salt Aerosol Production: Mechanisms, Methods, Measurements, and Models - A Critical Review
TL;DR: In this paper, Sea salt aerosol (SSA) particles interact with other atmospheric gaseous and aerosol constituents by acting as sinks for condensable gases and suppressing new particle formation, thus influencing the size distribution of other aerosols and more broadly influencing the geochemical cycles of substances with which they interact.
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Aerosol-type-dependent lidar ratios observed with Raman lidar
Detlef Müller,Albert Ansmann,Ina Mattis,Matthias Tesche,Ulla Wandinger,Dietrich Althausen,G. Pisani +6 more
TL;DR: In this paper, the authors presented statistics on lidar ratios for almost all climatically relevant aerosol types solely based on Raman lidar measurements, and compared their results to the recently published AERONET (Aerosol Robotic Network) lidar ratio climatology.
Journal ArticleDOI
Continuous observations of Asian dust and other aerosols by polarization lidars in China and Japan during ACE-Asia
Atsushi Shimizu,Nobuo Sugimoto,Ichiro Matsui,Kimio Arao,Itsushi Uno,Toshiyuki Murayama,Naoki Kagawa,Kazuma Aoki,Akihiro Uchiyama,A. Akihiro Yamazaki +9 more
TL;DR: In this paper, the authors used polarization lidars for continuous observations of aerosols in China and Japan during March to May 2001, corresponding with the Asian Pacific Regional Aerosol Characterization Experiment (ACE-Asia) field campaign period.
Journal ArticleDOI
Long-range transport of Saharan dust to northern Europe : The 11-16 October 2001 outbreak observed with EARLINET
Albert Ansmann,Jens Bösenberg,Anatoli Chaikovsky,Adolfo Comerón,Sabine Eckhardt,R. Eixmann,Volker Freudenthaler,Paul Ginoux,L. Komguem,Holger Linné,Miguel Ángel López Márquez,Volker Matthias,Ina Mattis,Valentin Mitev,Detlef Müller,Svetlana Music,Slobodan Nickovic,Jacques Pelon,Laurent Sauvage,Piotr Sobolewsky,Manoj K. Srivastava,Andreas Stohl,Omar Torres,Geraint Vaughan,Ulla Wandinger,Matthias Wiegner +25 more
TL;DR: In this article, the spread of mineral particles over southwestern, western, and central Europe resulting from a strong Saharan dust outbreak in October 2001 was observed at 10 stations of the European Aerosol Research Lidar Network (EARLINET).
References
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Book
Absorption and Scattering of Light by Small Particles
TL;DR: In this paper, a Potpourri of Particles is used to describe surface modes in small Particles and the Angular Dependence of Scattering is shown to be a function of the size of the particles.
Journal ArticleDOI
Climate Forcing by Anthropogenic Aerosols
Robert J. Charlson,Stephen E. Schwartz,J. M. Hales,Robert D. Cess,James A. Coakley,James Hansen,D. J. Hofmann +6 more
TL;DR: The aerosol forcing has likely offset global greenhouse warming to a substantial degree, however, differences in geographical and seasonal distributions of these forcings preclude any simple compensation.
The Atmospheric Boundary Layer
TL;DR: In this article, the atmospheric boundary layer (ABLBP) is used to model the ABL and the impact of ABL on climate, including its effect on mean and fluctuating quantities.
Book
The Atmospheric Boundary Layer
TL;DR: In this article, the atmospheric boundary layer (ABLBP) is used to model the ABL and the impact of ABL on climate, including its effect on mean and fluctuating quantities.