Measurement of light absorption in IMPROVE

摘要

Optical measurements from the Hybrid Integrating Plate/Sphere system, processed with the revised calibration model described here, yield a consistent record of light absorption throughout the IMPROVE monitoring network since 2003. Comparisons with IMPROVE chemical data identify both carbon soot and iron-bearing dust as significant contributors to light absorption by particulate matter. Reprocessed HIPS data will be available from the IMPROVE website in 2014.