![\"GOES-17](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2020\/10\/201020_goes17_visible_dustRGB_AK_anim.gif\")
<\/a>GOES-17 “Red” Visible (0.64 \u00b5m)<\/em> and Dust RGB images [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>Strong gap winds accelerating out of the\u00a0Copper River<\/strong><\/a> Valley along the southern coast of Alaska were lofting fine particles of glacial silt\/sand and transporting those aerosols southward across the Gulf of Alaska on 20 October 2020. 1-minute\u00a0Mesoscale Domain Sector<\/strong><\/a> GOES-17 (GOES-West)<\/em> “Red” Visible (0.64 \u00b5m<\/strong><\/a>) and Dust<\/strong><\/a> Red-Green-Blue (RGB) images (above)<\/strong><\/em> displayed the plume of airborne dust during the period of 1700-2300 UTC.<\/p>\n A good visualization of the dust plume was provided by GOES-17 True Color RGB images created using Geo2Grid<\/strong><\/a> (below)<\/strong><\/em>.<\/p>\n GOES-17 True Color RGB images [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>A comparison of Suomi NPP VIIRS Visible (0.64 \u00b5m), Shortwave Infrared (3.74 \u00b5m) and Infrared Window (11.45 \u00b5m) images at 2040 UTC is shown below — note that the dust plume appeared warmer (darker shades of gray)<\/em> on the Shortwave Infrared image, since the small dust particles were efficient reflectors of incoming solar radiation.<\/p>\n Suomi NPP VIIRS Visible (0.64 \u00b5m),<\/em> Shortwave Infrared (3.74 \u00b5m)<\/em> and Infrared Window (11.45 \u00b5m)<\/em> images [click to enlarge]<\/p><\/div>The dust plume also exhibited a good signature in the VIIRS Aerosol Optical Thickness (AOT) product from the eIDEA-AK<\/strong><\/a> site (below)<\/strong><\/em>.<\/p>\n<\/a><\/a>