Episodic dust events of Utahs Wasatch Front and adjoining region

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Publication Type pre-print
School or College College of Mines & Earth Sciences
Department Meteorology
Creator Steenburgh, William James
Other Author Massey, Jeffrey D.; Painter, Thomas H.
Title Episodic dust events of Utahs Wasatch Front and adjoining region
Date 2012-01-01
Description Episodic dust events cause hazardous air quality along Utah's Wasatch Front and dust loading of the snowpack in the adjacentWasatch Mountains. This paper presents a climatology of episodic dust events of the Wasatch Front and adjoining region that is based on surface weather observations from the Salt Lake City International Airport (KSLC), Geostationary Operational Environmental Satellite (GOES) imagery, and additional meteorological datasets. Dust events at KSLC-defined as any day [mountain standard time (MST)] with at least one report of a dust storm, blowing dust, and/or dust in suspension with a visibility of 10 km or less-average 4.3 per water year (WY: October-September), with considerable in-terannual variability and a general decline in frequency during the 1930-2010 observational record. The distributions of monthly dust-event frequency and total dust flux are bimodal, with primary and secondary maxima in April and September, respectively. Dust reports are most common in the late afternoon and evening. An analysis of the 33most recent (2001-10WY) events at KSLC indicates that 11 were associated with airmass convection, 16 were associated with a cold front or baroclinic trough entering Utah from the west or northwest, 4 were associated with a stationary or slowly moving front or baroclinic trough west of Utah, and 2 were associated with other synoptic patterns. GOES imagery from these 33 events, as well as 61 additional events from the surrounding region, illustrates that emission sources are located primarily in low-elevation Late Pleistocene-Holocene alluvial environments in southern and western Utah and southern and western Nevada.
Type Text
Publisher American Meteorological Society
Volume 51
Issue 9
First Page 1654
Last Page 1669
Language eng
Bibliographic Citation Steenburgh, W. J., Massey, J. D., & Painter, T. H. (2012). Episodic dust events of Utahs Wasatch Front and adjoining region. Journal of Applied Meteorology and Climatology, 51(9), 1654-69.
Rights Management (c)American Meteorological Society. Included with permission. Reprinted from Steenburgh, W. J, Massey, J. D., & Painter, T. H. (2012). Episodic dust events of Utahs Wasatch Front and adjoining region. Journal of Applied Meteorology and Climatology, 51(9), 1654-69. http://dx.doi.org/10.1175/JAMC-D-12-07.1 ; DOI: 10.1175/JAMC-D-12-07.1
Format Medium application/pdf
Format Extent 4,495,253 bytes
Identifier uspace,18037
ARK ark:/87278/s6xd1kgq
Setname ir_uspace
Date Created 2013-02-25
Date Modified 2013-02-26
ID 708321
Reference URL https://collections.lib.utah.edu/ark:/87278/s6xd1kgq
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