Aerosol optical hygroscopicity measurements during the 2010 CARES campaign

被引：22

作者：

Atkinson, D. B. ^{[1
]}

Radney, J. G. ^{[1
]}

Lum, J. ^{[1
]}

Kolesar, K. R. ^{[2
]}

Cziczo, D. J. ^{[3
]}

Pekour, M. S. ^{[4
]}

Zhang, Q. ^{[5
]}

Setyan, A. ^{[5
]}

Zelenyuk, A. ^{[4
]}

Cappa, C. D. ^{[2
]}

机构：

[1] Portland State Univ, Dept Chem, Portland, OR 97207 USA

[2] Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA

[3] MIT, Earth Atmosphere & Planetary Sci, Cambridge, MA 02139 USA

[4] Pacific NW Natl Lab, Richland, WA 99352 USA

[5] Univ Calif Davis, Dept Environm Toxicol, Davis, CA 95616 USA

来源：

ATMOSPHERIC CHEMISTRY AND PHYSICS | 2015年 / 15卷 / 08期

关键词：

PARTICLE SOOT PHOTOMETER; SECONDARY ORGANIC AEROSOL; SEA SPRAY AEROSOL; RELATIVE-HUMIDITY; BLACK CARBON; LIGHT-SCATTERING; BIOGENIC EMISSIONS; HIGH-RESOLUTION; SIZE; SITE;

D O I：

10.5194/acp-15-4045-2015

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Measurements of the effect of water uptake on particulate light extinction or scattering made at two locations during the 2010 Carbonaceous Aerosols and Radiative Effects Study (CARES) study around Sacramento, CA are reported. The observed influence of water uptake, characterized through the dimensionless optical hygroscopicity parameter gamma, is compared with calculations constrained by observed particle size distributions and size-dependent particle composition. A closure assessment has been carried out that allowed for determination of the average hygroscopic growth factors (GFs) at 85% relative humidity and the dimensionless hygroscopicity parameter kappa for oxygenated organic aerosol (OA) and for supermicron particles (defined here as particles with aerodynamic diameters between 1 and 2.5 microns), yielding kappa = 0.1-0.15 and 0.9-1.0, respectively. The derived range of oxygenated OA kappa values are in line with previous observations. The relatively large values for supermicron particles is consistent with substantial contributions of sea-salt-containing particles in this size range. Analysis of time-dependent variations in the supermicron particle hygroscopicity suggest that atmospheric processing, specifically chloride displacement by nitrate and the accumulation of secondary organics on supermicron particles, can lead to substantial depression of the observed GF.

引用

页码：4045 / 4061

页数：17

共 51 条

[1]

[Anonymous], 2014, CLIMATE CHANGE 2014, V80, P1

[2]

Bohren C. F., 2008, Absorption and Scattering of Light by Small Particles

[3] Limitations in the enhancement of visible light absorption due to mixing state [J].

Bond, Tami C. ;

Habib, Gazala ;

Bergstrom, Robert W. .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2006, 111 (D20)

[4] Chemical and microphysical characterization of ambient aerosols with the aerodyne aerosol mass spectrometer [J].

Canagaratna, M. R. ;

Jayne, J. T. ;

Jimenez, J. L. ;

Allan, J. D. ;

Alfarra, M. R. ;

Zhang, Q. ;

Onasch, T. B. ;

Drewnick, F. ;

Coe, H. ;

Middlebrook, A. ;

Delia, A. ;

Williams, L. R. ;

Trimborn, A. M. ;

Northway, M. J. ;

DeCarlo, P. F. ;

Kolb, C. E. ;

Davidovits, P. ;

Worsnop, D. R. .

MASS SPECTROMETRY REVIEWS, 2007, 26 (02) :185-222

[5] A case study into the measurement of ship emissions from plume intercepts of the NOAA ship Miller Freeman [J].

Cappa, C. D. ;

Williams, E. J. ;

Lack, D. A. ;

Buffaloe, G. M. ;

Coffman, D. ;

Hayden, K. L. ;

Herndon, S. C. ;

Lerner, B. M. ;

Li, S. -M. ;

Massoli, P. ;

McLaren, R. ;

Nuaaman, I. ;

Onasch, T. B. ;

Quinn, P. K. .

ATMOSPHERIC CHEMISTRY AND PHYSICS, 2014, 14 (03) :1337-1352

[6] Radiative Absorption Enhancements Due to the Mixing State of Atmospheric Black Carbon [J].

Cappa, Christopher D. ;

Onasch, Timothy B. ;

Massoli, Paola ;

Worsnop, Douglas R. ;

Bates, Timothy S. ;

Cross, Eben S. ;

Davidovits, Paul ;

Hakala, Jani ;

Hayden, Katherine L. ;

Jobson, B. Tom ;

Kolesar, Katheryn R. ;

Lack, Daniel A. ;

Lerner, Brian M. ;

Li, Shao-Meng ;

Mellon, Daniel ;

Nuaaman, Ibraheem ;

Olfert, Jason S. ;

Petaja, Tuukka ;

Quinn, Patricia K. ;

Song, Chen ;

Subramanian, R. ;

Williams, Eric J. ;

Zaveri, Rahul A. .

SCIENCE, 2012, 337 (6098) :1078-1081

[7] Variations in organic aerosol optical and hygroscopic properties upon heterogeneous OH oxidation [J].

Cappa, Christopher D. ;

Che, Daphne L. ;

Kessler, Sean H. ;

Kroll, Jesse H. ;

Wilson, Kevin R. .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2011, 116

[8] Mixtures of pollution, dust, sea salt, and volcanic aerosol during ACE-Asia: Radiative properties as a function of relative humidity [J].

Carrico, CM ;

Kus, P ;

Rood, MJ ;

Quinn, PK ;

Bates, TS .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2003, 108 (D23)

[9] The hygroscopicity parameter (κ) of ambient organic aerosol at a field site subject to biogenic and anthropogenic influences: relationship to degree of aerosol oxidation [J].

Chang, R. Y-W. ;

Slowik, J. G. ;

Shantz, N. C. ;

Vlasenko, A. ;

Liggio, J. ;

Sjostedt, S. J. ;

Leaitch, W. R. ;

Abbatt, J. P. D. .

ATMOSPHERIC CHEMISTRY AND PHYSICS, 2010, 10 (11) :5047-5064

[10] Particle analysis by laser mass spectrometry (PALMS) studies of ice nuclei and other low number density particles [J].

Cziczo, Daniel J. ;

Thomson, David S. ;

Thompson, Thomas L. ;

DeMott, Paul J. ;

Murphy, Daniel M. .

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 2006, 258 (1-3) :21-29

← 1 2 3 4 5 6 →