Air Pollution Transport Studies in a Coastal Zone Using Kinematic Diagnostic Analysis

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  • a Department of Geography, University of Cape Town, South Africa
  • | b Mesomet, Inc., Chicago, IL 60601
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Abstract

Data from a mesoscale wind analysis of a vigorous lake/land breeze circulation on 4 September 1974 along the western shoreline of Lake Michigan are available. A computer program takes subjectively analyzed observed and estimated u and v components of the wind for a 24 h period, calculates vertical motions, and then estimates the trajectory of any particle(s) released within the coastal zone. The computed three-dimensional trajectories are presented using computer graphics displays. They reveal highly complex transport processes for aerosols released from typical line and multistack point sources. Aerosol recirculation and size sorting can be found within the lake breeze cell.

Abstract

Data from a mesoscale wind analysis of a vigorous lake/land breeze circulation on 4 September 1974 along the western shoreline of Lake Michigan are available. A computer program takes subjectively analyzed observed and estimated u and v components of the wind for a 24 h period, calculates vertical motions, and then estimates the trajectory of any particle(s) released within the coastal zone. The computed three-dimensional trajectories are presented using computer graphics displays. They reveal highly complex transport processes for aerosols released from typical line and multistack point sources. Aerosol recirculation and size sorting can be found within the lake breeze cell.

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