نتایج جستجو برای: aerosol properties

تعداد نتایج: 893447  

2009
W. T. Morgan J. D. Allan K. N. Bower G. Capes J. Crosier P. I. Williams

A synthesis of UK based airborne in-situ measurements of aerosol properties representing air masses from North-West Europe and the North-East Atlantic is presented. The major focus of the study is the vertical distribution of sub-micron aerosol chemical composition. Vertical profiles are derived from a Quadrupole Aerosol Mass Spectrometer (Q-AMS). Background sub-micron aerosol vertical profiles...

2013
Kate M. Cerully James R. Hite Molly McLaughlin Athanasios Nenes

This work presents the development and characterization of a thermodenuder for the study and interpretation of aerosol volatility. Thermodenuder measurements are further combined with a Continuous-Flow Streamwise Thermal Gradient CCN Counter (CFSTGC) to obtain the corresponding aerosol hygroscopicity. The thermodenuder response function is characterized with monodisperse aerosol of variable vol...

Journal: :Applied optics 2009
Bing-Yi Liu Michael Esselborn Martin Wirth Andreas Fix De-Cang Bi Gerhard Ehret

The influence of molecular scattering models on aerosol optical properties measured by high spectral resolution lidar (HSRL) is experimentally investigated and theoretically evaluated. The measurements analyzed in this study were made during three field campaigns by the German Aerospace Center airborne HSRL. The influence of the respective theoretical model on spaceborne HSRL retrievals is also...

2003
Melanie A. Wetzel Glenn E. Shaw James R. Slusser Randolph D. Borys Catherine F. Cahill

[1] A new long-term monitoring site for providing multiwavelength (ultraviolet through near-infrared) and broadband irradiances has been established at the Poker Flat Research Range, Alaska, in order to assess the impacts of ozone, cloud cover, surface albedo, and aerosol conditions on trends in ultraviolet (UV) radiation reaching the surface. Targeted field measurements were conducted in the f...

Journal: :Remote Sensing 2018
Xin Lu Feiyue Mao Zengxin Pan Wei Gong Wei Wang Liqiao Tian Shenghui Fang

Aerosols greatly influence global and regional atmospheric systems, and human life. However, a comprehensive understanding of the source regions and three-dimensional (3D) characteristics of aerosol transport over central China is yet to be achieved. Thus, we investigate the 3D macroscopic, optical, physical, and transport properties of the aerosols over central China based on the March 2007 to...

2017

This paper addresses a topic of significant current research, namely quantifying the effect of aerosols on cloud properties. The authors note the importance of local meteorology in determining the properties of clouds and that as meteorological factors are also correlated to aerosol properties, this can obscure the influence of aerosols on cloud properties. To explore the role of meteorology an...

2000
Maria João Costa Elsa Cattani Francesca Torricella Vincenzo Levizzani Ana Maria Silva

The interest in aerosol observations from satellite passive instrument is steadily increasing as a result of the better understanding of the key role played by aerosols within the climate system. Satellite instruments supply global observations for establishing the aerosol climatology and characterizing single aerosol events. Since the 1980s data from geostationary meteorological satellites, su...

2011
KEVIN S. REPASKY JOHN A. REAGAN AMIN R. NEHRIR DAVID S. HOFFMAN MICHAEL J. THOMAS JOHN L. CARLSTEN JOSEPH A. SHAW GLENN E. SHAW

Coordinated observational data of atmospheric aerosols were collected over a 24-h period between 2300 mountain daylight time (MDT) on 27 August 2009 and 2300 MDT on 28 August 2009 at Bozeman, Montana (45.668N, 111.048W, elevation 1530 m) using a collocated two-color lidar, a diode-laser-based water vapor differential absorption lidar (DIAL), a solar radiometer, and a ground-based nephelometer. ...

2010
G. J. Engelhart S. N. Pandis

The composition and physical properties of aged atmospheric aerosol were characterized at a remote sampling site on the northern coast of Crete, Greece during the Finokalia Aerosol Measurement Experiment in May 2008 (FAME-2008). A reduced Dry-Ambient Aerosol Size Spectrometer (DAASS) was deployed to measure the aerosol water content and volumetric growth factor of fine particulate matter. The p...

Journal: :Atmospheric Chemistry and Physics 2021

Abstract. The clear-sky radiative effect of aerosol–radiation interactions is relevance for our understanding the climate system. influence aerosol on surface energy budget high interest renewable sector. In this study, investigated in particular with respect to seasonal and regional variations region Germany year 2015 at top atmosphere using two complementary approaches. First, an ensemble mod...

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