Tropospheric Chemistry: Instruments

BBCES instrument

BBCES instrument

BBCES (Broadband Cavity Enhanced Spectrometer)

Principle of the Measurement

Broadband Cavity Enhanced Spectroscopy

Species Measured

Aerosol extinction and complex refractive indices in the visible and ultraviolet spectral region (360 - 750 nm)

Time Response / Detection Limit

1 minute / 0.2 Mm-1

Field Projects

  • CalNex 2010
  • FLAME 2012
  • SOAS 2013
  • FIREX 2016

Contacts

Rebecca Washenfelder, Steve Brown

Key Publications

Washenfelder, R. A., A. R. Attwood, C. A. Brock, H. Guo, L. Xu, R. J. Weber, N. L. Ng, H. M. Allen, B. R. Ayres, K. Baumann, R. C. Cohen, D. C. Draper, K. C. Duffey, E. Edgerton, J. L. Fry, W. W. Hu, J. L. Jimenez, B. B. Palm, P. Romer, E. A. Stone, P. J. Wooldridge, and S. S. Brown, Biomass burning dominates brown carbon absorption in the rural southeastern United States, Geophys. Res. Lett., doi:10.1002/2014GL062444, 2015.

A. R. Attwood, A. R., R. A. Washenfelder, C. A. Brock, W. Hu, K. Baumann, P. Campuzano-Jost, D. A. Day, E. S. Edgerton, D. M. Murphy, B. B. Palm, A. McComiskey, N. L. Wagner, S. S. de Sa, A. Ortega, S. T. Martin, J. L. Jimenez, and S. S. Brown, Trends in sulfate and organic aerosol mass in the Southeast U.S.: Impact on aerosol optical depth and radiative forcing, Geophys. Res. Lett., doi:10.1002/2014GL061669, 2014.

Washenfelder, R. A., J. M. Flores, C. A. Brock, S. S. Brown, and Y. Rudich, Broadband measurements of aerosol extinction in the ultraviolet spectral region, Atm. Meas. Tech., doi: 10.5194/amt-6-861-2013, 2013.

Washenfelder, R. A., A. O. Langford, H. Fuchs, and S. S. Brown, Measurement of glyoxal using an incoherent broadband cavity enhanced absorption spectrometer, Atmos. Chem. Phys., doi:10.5194/acpd-8-16517-2008, 2008.