Profile Measurements of Sulfur Dioxide, Nitrogen Oxides, and Nitric Acid Deposition Velocities in California's South Coast Air Basin

摘要

The Desert Research Institute performed a three-week dry deposition measurement field program in the South Coast Air Basin of California to quantify the deposition velocities and their associated uncertainties for sulfur dioxide, sulfate aerosol, nitrogen oxides, and nitric acid. The measurements took place in May and June, 1986 on a flat, grass-covered surface near Carson, CA. Deposition velocities were estimated by the profile method, based on gas concentration gradient measurements and associated wind and temperature data acquired on a 5 meter tower, using a sampling frequency of 1 Hz.