![\"GOES-13](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2015\/08\/150807_goes13_visible_Hudson_Bay_ice_anim.gif\")
<\/a>GOES-13 visible (0.63 \u00b5m) images [click to play animation]<\/p><\/div>GOES-13 visible (0.63 \u00b5m) images (above; click image to play animation; also available as an MP4 movie file<\/a>)<\/strong><\/em> revealed a large amount of ice remaining in southern and eastern portions of Hudson Bay, Canada on 07 August 2015<\/strong><\/a>. The ice can be seen “sloshing” back and forth during the day as winds and\/or water currents moved it around.<\/p>\n The discrimination of ice vs supercooled water droplet clouds can be made by comparing Terra MODIS true-color and false-color Red\/Green\/Blue (RGB) images at 1611 UTC (below)<\/strong><\/em>. On the false-color image, ice (and glaciated clouds with a high concentration of ice crystals at cloud top) appeared as darker shades of red, in contrast to supercooled water droplet clouds which appeared as varying shades of white to cyan.<\/p>\n Terra MODIS true-color and false-color images [click to enlarge]<\/p><\/div>A Suomi NPP VIIRS true-color image as visualized using the SSEC RealEarth<\/strong><\/a> web map server (below)<\/strong><\/em> showed the ice at 1800 UTC; even greater detail can be seen in this zoomed-in version<\/strong><\/a> of the image.<\/p>\n Suomi NPP VIIRS true-color image [click to enlarge]<\/p><\/div><\/a>
\nMaps from from the Canadian Ice Service<\/strong><\/a> (below)<\/strong><\/em> indicated that the concentration of this thick first-year ice (dark green)<\/em> was still as high as 9\/10ths to 10\/10ths (red)<\/em> on 07 August; on 03 August, the ice concentration departure from normal was as high as +9\/10ths to +10\/10ths (dark blue)<\/em> in some locations.<\/p>\n