Atmospheric aerosol characterization using multiwavelength multistatic light scattering

2010 ◽  
Author(s):  
Andrea M. Brown ◽  
Michelle G. Snyder ◽  
Lydia Brouwer ◽  
C. Russell Philbrick
Keyword(s):  
Light Scattering ◽  
Atmospheric Aerosol ◽  
Aerosol Characterization

Accurate spectrally modulating polarimeters for atmospheric aerosol characterization

2015 ◽  
Author(s):  
Jeroen H. H. Rietjens ◽  
Martijn Smit ◽  
Gerard van Harten ◽  
Antonio Di Noia ◽  
Otto P. Hasekamp ◽  
...  
Keyword(s):  
Atmospheric Aerosol ◽  
Aerosol Characterization

scholarly journals Model of the process of extreme light scattering by atmospheric aerosol particle

2021 ◽  
Vol 64 (5) ◽  
pp. 376-383
Author(s):  
I.A. Potapova ◽  
A.P. Bobrovsky ◽  
N.V. Dyachenko ◽  
Yu.B. Rzhonsnitskaya ◽  
N.A. Sanotskaya ◽  
...  
Keyword(s):  
Light Scattering ◽  
Aerosol Particle ◽  
Atmospheric Aerosol

scholarly journals A European aerosol phenomenology-6: Scattering properties of atmospheric aerosol particles from 28 ACTRIS sites

2017 ◽  
Author(s):  
Marco Pandolfi ◽  
Lucas Alados-Arboledas ◽  
Andrés Alastuey ◽  
Marcos Andrade ◽  
Begoña Artiñano ◽  
...  
Keyword(s):  
Light Scattering ◽  
Eastern Europe ◽  
Atmospheric Aerosol ◽  
Central And Eastern Europe ◽  
Aerosol Particles ◽  
Accumulation Mode ◽  
Annual Variability ◽  
Baltic Countries ◽  
Atmospheric Aerosol Particles ◽  
Fine Mode

Abstract. This paper presents the light scattering properties of atmospheric aerosol particles measured over the past decade at 28 ACTRIS observatories, located mainly in Europe. The data include particle light scattering (σsp) and hemispheric backscattering (σbsp) coefficients, scattering Ångström exponent (SAE), backscatter fraction (BF) and asymmetry parameter (g). A large range of ssp was observed across the network. Low ssp values were on average measured in Nordic and Baltic countries and in Western Europe whereas the highest σsp were measured at regional sites in eastern and central Europe. In these regional areas the SAE was also high indicating the predominance of fine-mode particles. On average, the SAE was lower in the Nordic and Baltic, western and southern countries suggesting a lower fraction of fine-mode particle compared to central and eastern Europe. An increasing gradient of ssp was observed when moving from mountain to regional and to urban sites. Conversely, the mass-independent SAE and g parameters did not show the same gradient. At all sites, both SAE and g varied greatly with aerosol particle loading. The lowest values of g were always observed under low ssp indicating a larger contribution from particles in the smaller accumulation mode. Then, g steeply increased with increasing ssp indicating a progressive shift of the particle size distribution toward the larger end of the accumulation mode. Under periods of high particle mass concentrations, the variation of g was less pronounced whereas the SAE increased or decreased suggesting changes mostly in the coarse aerosol particles mode rather than in the fine mode. The station placement seemed to be the main parameter affecting the intra-annual variability. At mountain sites, higher σsp was measured in summer mainly because of the enhanced boundary layer influence. Conversely, less horizontal and vertical dispersion in winter led to higher σsp at all low altitude sites in central and eastern Europe compared to summer. On average, these sites also showed SAE maxima in summer (and correspondingly g minima). Large intra-annual variability of SAE and g was observed also at Nordic and Baltic countries due to seasonal-dependent transport of different air masses to these remote sites. Statistically significant decreasing trends of σsp were observed at 5 out of 13 stations included in trend analyses. The total reductions of ssp were consistent with those reported for PM2.5 and PM10 mass concentrations over similar periods across Europe.

scholarly journals Subarctic atmospheric aerosol composition: 1. Ambient aerosol characterization

2009 ◽  
Vol 114 (D13) ◽  
Author(s):  
Beth Friedman ◽  
Hanna Herich ◽  
Lukas Kammermann ◽  
Deborah S. Gross ◽  
Almut Arneth ◽  
...  
Keyword(s):  
Atmospheric Aerosol ◽  
Aerosol Composition ◽  
Ambient Aerosol ◽  
Aerosol Characterization

scholarly journals Atmospheric aerosol characterization with the Dutch–Chinese FAST formation flying mission

2010 ◽  
Vol 66 (7-8) ◽  
pp. 1044-1051 ◽  
Author(s):  
Eberhard Gill ◽  
Daan Maessen ◽  
Erik Laan ◽  
Stefan Kraft ◽  
Gang-tie Zheng
Keyword(s):  
Atmospheric Aerosol ◽  
Formation Flying ◽  
Aerosol Characterization

Analysis of lidar depolarization calibration procedure and application to the atmospheric aerosol characterization

2012 ◽  
Vol 34 (9-10) ◽  
pp. 3543-3560 ◽  
Author(s):  
Juan Antonio Bravo-Aranda ◽  
Francisco Navas-Guzmán ◽  
Juan Luis Guerrero-Rascado ◽  
Daniel Pérez-Ramírez ◽  
María José Granados-Muñoz ◽  
...  
Keyword(s):  
Atmospheric Aerosol ◽  
Calibration Procedure ◽  
Aerosol Characterization

Size-segregated urban aerosol characterization by electron microscopy and dynamic light scattering and influence of sample preparation

2018 ◽  
Vol 178 ◽  
pp. 181-190 ◽  
Author(s):  
Soňa Marvanová ◽  
Pavel Kulich ◽  
Radim Skoupý ◽  
František Hubatka ◽  
Miroslav Ciganek ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Sample Preparation ◽  
Urban Aerosol ◽  
Aerosol Characterization

Atmospheric aerosol characterization in 2010 anomalous summer season in the Moscow region

2011 ◽  
Vol 36 (6) ◽  
pp. 355-361 ◽  
Author(s):  
I. P. Parshutkina ◽  
E. V. Sosnikova ◽  
N. P. Grishina ◽  
E. A. Stulov ◽  
N. O. Plaude ◽  
...  
Keyword(s):  
Atmospheric Aerosol ◽  
Summer Season ◽  
Moscow Region ◽  
Aerosol Characterization

scholarly journals Transport of Atmospheric Aerosol by Gap Winds in the Columbia River Gorge

2008 ◽  
Vol 47 (1) ◽  
pp. 15-26 ◽  
Author(s):  
Mark C. Green ◽  
Jin Xu ◽  
Narendra Adhikari
Keyword(s):  
Light Scattering ◽  
Wind Speed ◽  
Atmospheric Aerosol ◽  
Columbia River ◽  
Pressure Gradients ◽  
Gap Flow ◽  
Westerly Winds ◽  
Gap Winds ◽  
Diurnal Wind ◽  
The City

Abstract Typical diurnal wind patterns and their relationship to transport of atmospheric aerosol in the Columbia River gorge of Oregon and Washington are addressed in this paper. The measurement program included measurements of light scattering by particles (bsp) with nephelometers, and wind speed and direction, temperature, and relative humidity at seven locations in the gorge. Winds are shown to respond to along-gorge pressure gradients, and five common patterns were identified: strong, moderate, and light westerly (west to east), light easterly, and winter easterly. The strong westerly and winter easterly patterns were the most common summer and winter patterns, respectively, and represented strong gap flow. The light westerly and light easterly patterns occurred most frequently in spring and autumn transition periods. Winter easterly had the highest light scattering and indicated sources east of the gorge mainly responsible for haze. During summer, as westerly winds increased diurnally, a pulse of hazy air from the Portland, Oregon, metropolitan area is transported eastward into the gorge, arriving later with distance into the gorge. During light easterly flow impacts to haze from the city of The Dalles, Oregon, are noted as the wind shifts direction diurnally.

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