of New Hampshire Scholars' Repository University of New Hampshire Scholars

] Thermal analysis of aerosol size distributions provided size resolved volatility up to temperatures of 400 (cid:1) C during extensive flights over North America (NA) for the INTEX/ICARTT experiment in summer 2004. Biomass burning and pollution plumes identified from trace gas measurements were evaluated for their aerosol physiochemical and optical signatures. Measurements of soluble ionic mass and refractory black carbon (BC) mass, inferred from light absorption, were combined with volatility to identify organic carbon at 400 (cid:1) C (VolatileOC) and the residual or refractory organic carbon, RefractoryOC. This approach characterized distinct constituent mass fractions present in biomass burning and pollution plumes every 5–10 min. Biomass burning, pollution and dust aerosol could be stratified by their combined spectral scattering and absorption properties. The ‘‘nonplume’’ regional aerosol exhibited properties dominated by pollution characteristics near the surface and biomass burning aloft. VolatileOC included most water-soluble organic carbon. RefractoryOC dominated enhanced shortwave absorption in plumes from Alaskan and Canadian forest fires. The mass absorption efficiency of this RefractoryOC was about 0.63 m 2 g (cid:1) 1 at 470 nm and 0.09 m 2 g (cid:1) 1 at 530 nm. Concurrent measurements of the humidity dependence of scattering, g , revealed the OC component to be only weakly hygroscopic resulting in a general decrease in g with increasing OC mass fractions. Under ambient humidity conditions, the systematic relations between physiochemical properties and g lead to a well-constrained dependency on the absorption per unit dry mass for these plume types that may be used to challenge remotely sensed and modeled optical properties.

[1]  S. Howell,et al.  Aircraft profiles of aerosol microphysics and optical properties over North America: Aerosol optical depth and its association with PM2.5 and water uptake , 2007 .

[2]  Philip B. Russell,et al.  Overview of the Summer 2004 Intercontinental Chemical Transport Experiment–North America (INTEX-A) , 2006 .

[3]  J. A. de Gouw,et al.  Airborne measurements of carbonaceous aerosol soluble in water over northeastern United States: Method development and an investigation into water-soluble organic carbon sources , 2006 .

[4]  T. Bond,et al.  Limitations in the enhancement of visible light absorption due to mixing state , 2006 .

[5]  M. Andreae,et al.  Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols , 2006 .

[6]  C. Linke,et al.  Strong spectral dependence of light absorption by organic carbon particles formed by propane combustion , 2006 .

[7]  B. Huebert,et al.  Influence of relative humidity upon pollution and dust during ACE‐Asia: Size distributions and implications for optical properties , 2006 .

[8]  T. Bond,et al.  Light Absorption by Carbonaceous Particles: An Investigative Review , 2006 .

[9]  S. Howell,et al.  Results from the DC-8 Inlet Characterization Experiment (DICE): Airborne Versus Surface Sampling of Mineral Dust and Sea Salt Aerosols , 2005 .

[10]  J. Penner,et al.  Aerosol direct radiative effects over the northwest Atlantic, northwest Pacific, and North Indian Oceans: estimates based on in-situ chemical and optical measurements and chemical transport modeling , 2005 .

[11]  Mark J. Rood,et al.  Impact of particulate organic matter on the relative humidity dependence of light scattering: A simplified parameterization , 2005 .

[12]  Yinon Rudich,et al.  Atmospheric HULIS : how humic-like are they ? A comprehensive and critical review , 2005 .

[13]  Meinrat O. Andreae,et al.  Optical properties of humic-like substances (HULIS) in biomass-burning aerosols , 2005 .

[14]  Ernest Weingartner,et al.  Effect of humidity on aerosol light absorption and its implications for extinction and the single scattering albedo illustrated for a site in the lower free troposphere , 2005 .

[15]  K. Wittmaack.  Combustion characteristics of water-insoluble elemental and organic carbon in size selected ambient aerosol particles , 2005 .

[16]  R. Martin,et al.  North American Pollution Outflow and the Trapping of Convectively Lifted Pollution by Upper-Level Anticyclone , 2005 .

[17]  P. Quinn,et al.  Modification, Calibration and a Field Test of an Instrument for Measuring Light Absorption by Particles , 2005 .

[18]  Thomas W. Kirchstetter,et al.  Evidence that the spectral dependence of light absorption by aerosols is affected by organic carbon , 2004 .

[19]  Erik Swietlicki,et al.  Organic aerosol and global climate modelling: a review , 2004 .

[20]  Barry J. Huebert,et al.  Size distributions and mixtures of dust and black carbon aerosol in Asian outflow: Physiochemistry and optical properties , 2004 .

[21]  Jay R. Turner,et al.  A method for on‐line measurement of water‐soluble organic carbon in ambient aerosol particles: Results from an urban site , 2004 .

[22]  Mark R. Schoeberl,et al.  Transport of smoke from Canadian forest fires to the surface near Washington, D.C.: Injection height, entrainment, and optical properties , 2004 .

[23]  G. Kiss,et al.  Chemical characterization of humic‐like substances (HULIS) formed from a lignin‐type precursor in model cloud water , 2004 .

[24]  J. Dibb,et al.  Aerosol chemical composition in Asian continental outflow during the TRACE‐P campaign: Comparison with PEM‐West B , 2003 .

[25]  Albert Ansmann,et al.  Indo‐Asian pollution during INDOEX: Microphysical particle properties and single‐scattering albedo inferred from multiwavelength lidar observations , 2003 .

[26]  P. Formenti,et al.  The mean physical and optical properties of regional haze dominated by biomass burning aerosol measured from the C-130 aircraft during SAFARI 2000 , 2003 .

[27]  T. Bond,et al.  Primary particle emissions from residential coal burning: Optical properties and size distributions , 2002 .

[28]  M. Facchini,et al.  Water‐soluble organic compounds in biomass burning aerosols over Amazonia 2. Apportionment of the chemical composition and importance of the polyacidic fraction , 2002 .

[29]  T. Kirchstetter,et al.  Carbonaceous aerosols over the Indian Ocean during the Indian Ocean Experiment (INDOEX): Chemical characterization, optical properties, and probable sources , 2002 .

[30]  Curt M. White,et al.  Sources and composition of PM2.5 at the National Energy Technology Laboratory in Pittsburgh during July and August 2000 , 2002 .

[31]  Xin Wang,et al.  The Relationship between Mass and Mobility for Atmospheric Particles: A New Technique for Measuring Particle Density , 2002 .

[32]  Barbara J. Turpin,et al.  Species Contributions to PM2.5 Mass Concentrations: Revisiting Common Assumptions for Estimating Organic Mass , 2001 .

[33]  Rodney J. Weber,et al.  A Particle-into-Liquid Collector for Rapid Measurement of Aerosol Bulk Chemical Composition , 2001 .

[34]  Tami C. Bond,et al.  Light absorption by primary particle emissions from a lignite burning plant , 1999 .

[35]  W. Malm,et al.  Effects of mixing on extinction by carbonaceous particles , 1999 .

[36]  Tami C. Bond,et al.  Calibration and Intercomparison of Filter-Based Measurements of Visible Light Absorption by Aerosols , 1999 .

[37]  Robert J. Charlson,et al.  Performance Characteristics of a High-Sensitivity, Three-Wavelength, Total Scatter/Backscatter Nephelometer , 1996 .

[38]  Jost Heintzenberg,et al.  Design and Applications of the Integrating Nephelometer: A Review , 1996 .

[39]  H. Burtscher,et al.  Submicron fly ash penetration through electrostatic precipitators at two coal power plants , 1996 .

[40]  C. Corrigan,et al.  Thermal characterization of biomass smoke particles , 1995 .

[41]  Glen W. Sachse,et al.  Fast‐response, high‐precision carbon monoxide sensor using a tunable diode laser absorption technique , 1987 .

[42]  E. Patterson.  Optical properties of the crustal aerosol - Relation to chemical and physical characteristics , 1981 .

[43]  David Sims,et al.  MEDIA ADVISORY US Senator John Sununu to Attend NASA Briefing at UNHs Institute for the Study of Earth, Oceans, and Space , 2005 .

[44]  J. Ogren,et al.  Determining Aerosol Radiative Properties Using the TSI 3563 Integrating Nephelometer , 1998 .

[45]  A. Clarke.  A thermo-optic technique for in situ analysis of size-resolved aerosol physicochemistry , 1991 .

[46]  T. Eck,et al.  A review of biomass burning emissions, part II: Intensive physical properties of biomass burning particles , 2022 .