Sulfur Dioxide Measurements and Mass Flux Calculations in Support of the AMBIENS Field Experiment

摘要

During the first two weeks of October, 1977, a 12-day field experiment was conducted to estimate the rate of SO sub 2 transformation into sulfate by measuring the components of the sulfur balance in a hypothetical box region. To obtain the measurements necessary to define the atmospheric components of the Planetary Boundary Layer, a PBL site was located in a cornfield fifteen kilometers east of Shelbyville, Indiana. Vertical temperature and wind profiles were made at this location, as well as a variety of pollutant measurements. Two instrumented aircraft were used to measure pollutant and tracer concentrations along the sides of the box in an attempt to quantify the flux into and out of the study region. Results are reported from measurements of vertically integrated SO sub 2 concentrations around the edges of the box using a correlation spectrometer. SO sub 2 mass flux calculations were subsequently made using the SO sub 2 data in conjunction with vertical wind profile measurements. The instrumentation and techniques used are discussed. (ERA citation 03:037967)