English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Airborne characterization of subsaturated aerosol hygroscopicity and dry refractive index from the surface to 6.5km during the SEAC4RS campaign

Shingler, T., Crosbie, E., Ortega, A., Shiraiwa, M., Zuend, A., Beyersdorf, A., et al. (2016). Airborne characterization of subsaturated aerosol hygroscopicity and dry refractive index from the surface to 6.5km during the SEAC4RS campaign. Journal of Geophysical Research-Atmospheres, 121(8), 4188-4210. doi:10.1002/2015JD024498.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Shingler, Taylor1, Author
Crosbie, Ewan1, Author
Ortega, Amber1, Author
Shiraiwa, M.2, Author           
Zuend, Andreas1, Author
Beyersdorf, Andreas1, Author
Ziemba, Luke1, Author
Anderson, Bruce1, Author
Thornhill, Lee1, Author
Perring, Anne E.1, Author
Schwarz, Joshua P.1, Author
Campazano-Jost, Pedro1, Author
Day, Douglas A.1, Author
Jimenez, Jose L.1, Author
Hair, Johnathan W.1, Author
Mikoviny, Tomas1, Author
Wisthaler, Armin1, Author
Sorooshian, Armin1, Author
Affiliations:
1external, ou_persistent22              
2Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              

Content

show
hide
Free keywords: -
 Abstract: In situ aerosol particle measurements were conducted during 21 NASA DC-8 flights in the Studies of Emissions and Atmospheric Composition, Clouds, and Climate Coupling by Regional Surveys field campaign over the United States, Canada, Pacific Ocean, and Gulf of Mexico. For the first time, this study reports rapid, size-resolved hygroscopic growth and real refractive index (RI at 532 nm) data between the surface and upper troposphere in a variety of air masses including wildfires, agricultural fires, biogenic, marine, and urban outflow. The Differential Aerosol Sizing and Hygroscopicity Spectrometer Probe (DASH-SP) quantified size-resolved diameter growth factors (GF = D-p,D-wet/D-p,D-dry) that are used to infer the hygroscopicity parameter kappa. Thermokinetic simulations were conducted to estimate the impact of partial particle volatilization within the DASH-SP across a range of sampling conditions. Analyses of GF and RI data as a function of air mass origin, dry size, and altitude are reported, in addition to kappa values for the inorganic and organic fractions of aerosol. Average RI values are found to be fairly constant (1.52-1.54) for all air mass categories. An algorithm is used to compare size-resolved DASH-SP GF with bulk scattering f(RH=80%) data obtained from a pair of nephelometers, and the results show that the two can only be reconciled if GF is assumed to decrease with increasing dry size above 400 nm (i.e., beyond the upper bound of DASH-SP measurements). Individual case studies illustrate variations of hygroscopicity as a function of dry size, environmental conditions, altitude, and composition.

Details

show
hide
Language(s):
 Dates: 2016
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000378318100028
DOI: 10.1002/2015JD024498
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Geophysical Research-Atmospheres
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, D.C. : American Geophysical Union
Pages: - Volume / Issue: 121 (8) Sequence Number: - Start / End Page: 4188 - 4210 Identifier: ISSN: 0148-0227
CoNE: https://pure.mpg.de/cone/journals/resource/991042728714264_1