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Processing of surface concentration data from tracer releases in MVP sessions 1, 2, 3, at Cape Canaveral, Florida

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Processing of surface concentration data from tracer releases in MVP sessions 1, 2, 3, at Cape Canaveral, Florida
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    Near-instantaneous concentration measurements by mobile vans of SF₆ tracer gas released from different locations and heights at Cape Canaveral, FL, during Sessions 1, 2, 3 of the Model Validation Program (MVP) field experiments were processed to derive single-pass and time-average surface concentrations at virtual receptors located on common tracks. The three sessions were conducted during different seasons of 1995 and 1996. The tracer was sampled using continuous fast gas analyzers installed in two aircraft as well as six passenger vans moving on available roadways downwind of the tracer release (source) locations. The tracer measurements and associated meteorological data were stored in the MVP archive housed at ATDD. Two tracer tests, one with an elevated release and the other with a near-surface release, were selected for each session for the data analyses described in this report. Several computer software programs were developed to read and process the raw data from the MVP archive, to interpolate the mobile van-sampled "Lagrangian" concentrations to receptors located on a common fixed "Eulerian" track, and to calculate and store the single-pass and half-hour average concentrations at these receptors. This report describes the procedure used to derive the time-space history of the concentration field and half-hour average concentrations for six tracer tests. The processed concentration data for the six tests were stored in the MVP archive in a separate directory. This report illustrates and explains how the raw tracer data were processed to derive the surface concentration fields and time-averaged concentrations. This document, including the computer programs listed in Appendix I, is intended to demonstrate and guide potential users in processing the archived MVP data for other tracer tests for their research and related applications
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