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(b)
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Figure 3: (a and b) Maps of sea level pressure on March 22, 2013, at (a) 06 UTC and (b) 12 UTC, based on NASA MERRA reanalysis data. (c and d) Maps of 10-m winds and surface dust concentration at (c) 06 UTC and (d) 12 UTC, based on DREAM dust model data. (e) MODIS-Aqua satellite image of cloudiness taken on March 22, 2013, at 11:40 UTC.