The MUST (Mock Urban Setting Test) trials were conducted on the "Horizontal Grid" at the Dugway Proving Ground in Utah's west desert area (September 2001). This was a multi-organizational effort to gain scientific understanding for improved dispersionmodeling in urban areas. During the MUST trials, meteorological and concentration measurements were throughout a 12 x 10 array of shipping containers (each 12.2 m long, 2.42 m wide, 2.54 m high) that were fully immersed in a high Reynolds number, real atmospheric boundary layer (see Biltoft (2001) and Biltoft et al. (2002) for details of the experimental site). For a normal incident flow angle, the inner buildings were typically in an isolated roughness regime. The data presented here were taken from the evening transition period (-17:30 LST) through the early morning (-8:00 LST) on September 24, 2001.
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