نتایج جستجو برای: aerosol na

تعداد نتایج: 294573  

2007
Robert C. Levy Lorraine A. Remer Oleg Dubovik

[1] As more information about global aerosol properties has become available from remotely sensed retrievals and in situ measurements, it is prudent to evaluate this new information, both on its own and in the context of satellite retrieval algorithms. Using the climatology of almucantur retrievals from global Aerosol Robotic Network (AERONET) Sun photometer sites, we perform cluster analysis t...

2017
Hongyu Guo Jiumeng Liu Karl D. Froyd James M. Roberts Patrick R. Veres Patrick L. Hayes Jose L. Jimenez Athanasios Nenes Rodney J. Weber

pH is a fundamental aerosol property that affects ambient particle concentration and composition, linking pH to all aerosol environmental impacts. Here, PM1 and PM2.5 pH are calculated based on data from measurements during the California Research at the Nexus of Air Quality and Climate Change (CalNex) study from 15 May to 15 June 2010 in Pasadena CA. Particle pH and water were predicted with t...

Journal: :international journal of environmental research 2012
a.r. noorpoor a. sadighzadeh h. habibnejad

the removal of fine particles less than 2.5 μm in diameter generated from industrial plantsrepresents a serious challenge in air pollution abatement. these particles can penetrate deeply into the lungs and are difficult to remove by cyclones, electrostatic precipitators, and other conventional separation devices. in this paper, the influence of acoustic waves on removing aerosol particles from ...

2003
Kimberly A. Mace Nilgün Kubilay Robert A. Duce

[1] From March through early May of 2000, rain and bulk aerosol samples were collected at a coastal site on the eastern Mediterranean Sea at Erdemli, Turkey, and analyzed for nitrogen (N) species, including nitrate (NO3 ), nitrite (NO2 ), ammonium (NH4 ), watersoluble organic N, urea, and dissolved free amino acids. Other ions were also analyzed, including Ca, Mg, K, Na, Cl , and SO4 2 . Water-...

Journal: :The journal of physical chemistry. A 2012
Marcelo I Guzman Richa R Athalye Jose M Rodriguez

During the aerosolization process at the sea surface, halides are incorporated into aerosol droplets, where they may play an important role in tropospheric ozone chemistry. Although this process may significantly contribute to the formation of reactive gas phase molecular halogens, little is known about the environmental factors that control how halides selectively accumulate at the air-water i...

Journal: :Faraday discussions 2013
Joseph L Woo Derek D Kim Allison N Schwier Ruizhi Li V Faye McNeill

Organic chemistry in aerosol water has recently been recognized as a potentially important source of secondary organic aerosol (SOA) material. This SOA material may be surface-active, therefore potentially affecting aerosol heterogeneous activity, ice nucleation, and CCN activity. Aqueous aerosol chemistry has also been shown to be a potential source of light-absorbing products ("brown carbon")...

2009
Junfeng Liu Denise L. Mauzerall Larry W. Horowitz

In this second of two companion papers, we quantify for the first time the global impact on premature mortality of the inter-continental transport of fine aerosols (including sulfate, black carbon, organic carbon, and mineral dust) using the global modeling results of (Liu et al., 2009). Our objective is to estimate the number of premature mortalities in each of ten selected continental regions...

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