{"id":14966,"date":"2014-02-16T22:59:44","date_gmt":"2014-02-16T22:59:44","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=14966"},"modified":"2014-02-17T17:25:30","modified_gmt":"2014-02-17T17:25:30","slug":"lake-michigan-ice-motion-cloud-streets-and-a-mesovortex","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/14966","title":{"rendered":"Lake Michigan: ice motion, cloud streets, and a mesovortex"},"content":{"rendered":"
\"GOES-13<\/a>

GOES-13 0.63 \u00c2\u00b5m visible channel images (click to play animation)<\/p><\/div>\n

AWIPS images of GOES-13 0.63 \u00c2\u00b5m visible channel data (above; click image to play animation)<\/strong><\/em> displayed a number of interesting Lake Michigan features on 16 February 2014<\/strong><\/a>: (1) the motion of lake ice in the northern and far eastern portions of the lake, (2) the formation of parallel cloud streets over the ice-free waters of the central part of lake, and (3) the development of a mesoscale vortex (or “mesovortex”) over the southern end of the lake.<\/p>\n

Northerly winds were blowing down the long axis of Lake Michigan in the wake of a departing area of low pressure; Metop ASCAT surface scatterometer wind speeds were as high as 35 knots at 15:26 UTC (below)<\/strong><\/em>.<\/p>\n

\"GOES-13<\/a>

GOES-13 0.63 \u00c2\u00b5m visible channel image with ASCAT surface scatterometer winds<\/p><\/div>\n

False-color Red\/Green\/Blue (RGB) images created from Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible and 1.61 \u00c2\u00b5m “snow\/ice channel” data (below)<\/strong><\/em> helped to disctiminate between snow cover and ice fearures (which appeared as varying shades of red)<\/em> and supercooled water droplet cloud features (which appeared as brighter shades of white)<\/em>. Even in the relatively short 1.5 hour period separating the two VIIRS RGB images, a significant amount of ice motion could be seen.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS false-color “snow\/ice vs cloud discrimination” RGB images<\/p><\/div>\n

As an aside, another feature of interest seen in the GOES-13 visible images included arc-shaped aircraft dissipation trails (or “distrails”), created by air traffic that was likely circling upon approach or departure from the Chicago O’Hare or Midway airports (below; click image to play animation)<\/strong><\/em>. Partcles in the aircraft exhaust acted as ice condensation nuclei, glaciating a trail as they penetrated the supercooled water droplet cloud deck.<\/p>\n

\"GOES-13<\/a>

GOES-13 0.63 \u00c2\u00b5m visible channel images (click to play animation)<\/p><\/div>\n

\n","protected":false},"excerpt":{"rendered":"

AWIPS images of GOES-13 0.63 \u00c2\u00b5m visible channel data (above; click image to play animation) displayed a number of interesting Lake Michigan features on 16 February 2014: (1) the motion of lake ice in the northern and far eastern portions of the lake, (2) the formation of parallel cloud streets over the ice-free waters of […]<\/p>\n","protected":false},"author":18,"featured_media":14970,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21,11,58,45,25,49,48,5],"tags":[],"class_list":["post-14966","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation","category-goes-13","category-metop","category-redgreenblue-rgb-images","category-satellite-winds","category-suomi_npp","category-viirs","category-winter-weather"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=14966"}],"version-history":[{"count":4,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14966\/revisions"}],"predecessor-version":[{"id":14971,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14966\/revisions\/14971"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/14970"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=14966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=14966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=14966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}