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原文传递 Meteorological Influences of a Major Dust Storm in Southwest Asia During July-August 2018.

题名：	Meteorological Influences of a Major Dust Storm in Southwest Asia During July-August 2018.
作者：	Alter, R. E; LeGrand, S. L; Spates, F. D; Ledbetter, W. D; Minnigan, S. D; Thompson, J. W; Carter, K. I; Elliott, P. D.
摘要：	Dust storms can be hazardous for aviation, military activities, and respira-tory health and can occur on a wide variety of spatiotemporal scales withlittle to no warning. To properly forecast these storms, a comprehensiveunderstanding of the meteorological dynamics that control their evolutionis a prerequisite. To that end, we chose a major dust storm that occurredin Southwest Asia during July–August 2018 and conducted an observa-tion-based analysis of the meteorological conditions that influenced thestorm’s evolution. We found that the main impetus behind the dust stormwas a large-scale meteorological system (i.e., a cyclone) that affectedSouthwest Asia. It seems that cascading effects from this system produceda smaller, near-surface warm anomaly in Mesopotamia that may have trig-gered the dust storm, guided its trajectory over the Arabian Peninsula, andpotentially catalyzed the development of a small low-pressure system overthe southeastern end of the peninsula. This low-pressure system may havecontributed to some convective activity over the same region. This type ofanalysis may provide important information about large-scale meteorolog-ical forcings for not only this particular dust storm but also for future duststorms in Southwest Asia and other regions of the world.
总页数：	58 pages