Test of a prototype eddy accumulator for measuring atmospheric vertical fluxes of water vapor and particulate sulfate

Abstract

An eddy accumulator was developed and operated during the Dry Deposition Intercomparison Study at Champaign, Illinois, in June 1982. The system collected paired samples for water vapor and particulate sulfate flux measurements, one sample for upward eddies and the other for downward eddies. Nineteen water vapor samples were analyzed gravimetrically, and two sulfate samples were analyzed by ion chromatography. Comparison of water vapor results with eddy correlation measurements showed that discrepancies exceeded predicted errors. No significant results were obtained from the sulfate samples.