Wind Velocities Associated with Dust Deflation Events in the Western Sahara

View More View Less
  • 1 University of Miami, Rosenstiel School of Marine and Atmospheric Science, Miami, FL 33149
© Get Permissions
Full access

Abstract

Data from eight meteorological stations in the western Sahara for the period 1 July-15 August 1974 indicate that the mean wind velocity associated with dust-raising events is about 10.5 m s−1. The mean deflation velocity at individual stations ranged from 6.5 to 13.0 m s−1. At most stations the wind velocity associated with the onset of a dust-raising event (the threshold velocity) appears to be a reproducible characteristic of the environment. Threshold velocity variations appear to be attributable in part to differences in soil and terrain characteristics at the stations.

Abstract

Data from eight meteorological stations in the western Sahara for the period 1 July-15 August 1974 indicate that the mean wind velocity associated with dust-raising events is about 10.5 m s−1. The mean deflation velocity at individual stations ranged from 6.5 to 13.0 m s−1. At most stations the wind velocity associated with the onset of a dust-raising event (the threshold velocity) appears to be a reproducible characteristic of the environment. Threshold velocity variations appear to be attributable in part to differences in soil and terrain characteristics at the stations.

Save