A novel, broadband spectroscopic method to measure the extinction coefficient of aerosols in the near-ultraviolet

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

Few in situ methods can currently measure the optical properties of aerosols in the near-ultraviolet spectral region. Such measurements are necessary to determine the radiative forcing of different particle types and the subsequent effect on local photochemistry, especially in and around large urban centers. In this work, we demonstrate a system based on incoherent broadband cavity-enhanced absorption spectroscopy (IBBCEAS) to measure the aerosol extinction coefficient with high sensitivity. The system was applied across an atmosphere simulation chamber and had continuous spectral coverage from 320 to 410 nm. Systems studied were ammonium sulfate aerosol and secondary organic aerosol (SOA) formed from the photolysis of 1-nitronaphthalene, an important nitro-polycyclic aromatic hydrocarbon.

Original languageEnglish
Title of host publicationRadiation Processes in the Atmosphere and Ocean, IRS 2012 - Proceedings of the International Radiation Symposium (IRC/IAMAS)
Pages155-158
Number of pages4
DOIs
Publication statusPublished - 2013
EventInternational Radiation Symposium: Radiation Processes in the Atmosphere and Ocean, IRS 2012 - Berlin, Germany
Duration: 6 Aug 201210 Aug 2012

Publication series

NameAIP Conference Proceedings
Volume1531
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Radiation Symposium: Radiation Processes in the Atmosphere and Ocean, IRS 2012
Country/TerritoryGermany
CityBerlin
Period6/08/1210/08/12

Keywords

  • 1-nitronaphthalene
  • Ammonium sulfate
  • Extinction
  • IBBCEAS
  • Nitro-aromatic
  • Optical properties
  • PAH
  • SOA

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