A fixed frequency aerosol albedometer.
A new method for the measurement of aerosol single scatter albedo (omega) at 532 nm was developed. The method employs cavity ring-down spectroscopy (CRDS) for measurement of aerosol extinction coefficient (b(ext)) and an integrating sphere nephelometer for determination of aerosol scattering coefficient (b(scat)). A unique feature of this method is that the extinction and scattering measurements are conducted simultaneously, on the exact same sample volume. Limits of detection (3s) for the extinction and scattering channel were 0.61 Mm(-1) and 2.7 Mm(-1) respectively.
Thompson
Jonathan E
JE
Department of Chemistry, University of Nebraska at Kearney, Kearney, NE 68849, USA. thompsonje@unk.edu
Barta
Nick
N
Policarpio
Danielle
D
Duvall
Richard
R
D000336:Aerosols / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D055095:Optics and Photonics / Q000295:instrumentation*; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis*; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity
D000336:Aerosols; D052638:Particulate Matter