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Subseasonal Variability of Elevated Dust Concentrations Over South Florida
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2020
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Source: Journal of Geophysical Research: Atmospheres, 125(6)
[PDF-18.82 MB]
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Journal Title:Journal of Geophysical Research: Atmospheres
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Description:Dust mass concentrations have been measured daily at Miami, Florida, in the summer months, and biweekly throughout the remaining months, since 1974. The 43 ‐year record of dust mass concentrations indicate large daily, seasonal, and interannual variations, with most of the dust arrivingwithin 5 –8 episodes each summer. On average, dust arrives to Miami, Florida, 10 days after emission from North Africa, with measured concentrations depending on characteristics of the lower free ‐tropospheric winds due to the vast travel distance. Daily dust mass concentrations from July and August, the months thatcontribute the most to the annual mean, are used to characterize the synoptic conditions most favorable for dust transport. Two key regions are linked with the highest daily dust mass concentrations above Miami: (i) easterly winds, averaged over 850 –500 mb, over the Tropical West Atlantic [15 –25°N, 45 –80°W], and
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Source:Journal of Geophysical Research: Atmospheres, 125(6)
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ISSN:2169-897X;2169-8996;
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