Tropospheric Chemistry: Instruments

MABEL filter radiometers on Kohler Mesa

MABEL filter radiometers at the Kohler Mesa, Colorado

MABEL (Mobile Atmosphere-Biosphere Environmental Laboratory) Photolysis Rates (j-values) decommissioned

Principle of the Measurement

Filter radiometry

Species Measured

jNO2, jNO3, jO3(O1D)

Time Response

1 second

Detection Limit

jNO2 = 3e-6 s-1; jNO3 = 4e-7 s-1; jO3 = 5e-9 s-1


Metcon Inc.

Field Projects

  • NEAQS-ITCT 2004
  • TexAQS 2006
  • Erie 2007
  • ICEALOT 2008
  • CalNex 2010


Brian Lerner

Key Publications

Stark, H., B. M. Lerner, R. Schmitt, R. Jakoubek, E. J. Williams, T. B. Ryerson, D. T. Sueper, D. D. Parrish, and F. C. Fehsenfeld, Atmospheric in situ measurement of nitrate radical (NO3) and other photolysis rates using spectroradiometry and filter radiometry, J. Geophys. Res., doi:10.1029/2006JD007578, 2007.