{"id":14861,"date":"2014-01-29T21:59:36","date_gmt":"2014-01-29T21:59:36","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=14861"},"modified":"2014-02-02T21:03:09","modified_gmt":"2014-02-02T21:03:09","slug":"great-lakes-ice","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/14861","title":{"rendered":"Great Lakes ice"},"content":{"rendered":"
\"Suomi<\/a>

Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel and Snow\/cloud discrimination RGB images<\/p><\/div>\n

An AWIPS II image comparison of Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel data and the corresponding “Snow\/cloud discrimination” Red\/Green\/Blue (RGB) product (above)<\/strong><\/em> provided a glimpse of many of the areas of ice coverage on the Great Lakes at 18:06 UTC on 29 January 2014<\/strong><\/a>. Ice began to increase (especially across the western Great Lakes) in late January following one of the more significant arctic outbreaks of the 2013\/2014 winter season. On the RGB image, snow and ice appear as varying shades of red, in contrast to supercooled water droplet clouds which appear as shades of white.<\/p>\n

\"Terra<\/a>

Terra and Aqua MODIS true-color images (28 January)<\/p><\/div>\n

On the previous day (28 January), comparisons between 17:28 UTC Terra and 19:12 UTC Aqua MODIS true-color RGB images from the SSEC MODIS Today<\/strong><\/a> site revealed the amount of sea ice motion in the relatively short time (approximately 100 minutes) between the 2 images, a result of fairly strong winds blowing over the nearshore waters. The MODIS image comparisons are centered over the Upper Peninsula of Michigan (above),<\/strong><\/em> and over southern Lake Michigan (below)<\/strong><\/em>.<\/p>\n

\"Terra<\/a>

Terra and Aqua MODIS true-color images (28 January)<\/p><\/div>\n

——————————–<\/p>\n

\"Terra<\/a>

Terra and Aqua MODIS true-color images (29 January)<\/p><\/div>\n

On 29 January, similar comparisons of the 16:34 UTC Terra and 18:16 UTC Aqua MODIS true-color RGB images showed a better view of the multiple long and narrow ice floes in northern lake Michigan (above),<\/strong><\/em> and showed how much ice in southern Lake Michigan had been blown across the lake and against the southeastern shore (below)<\/strong><\/em>.<\/p>\n

\"Terra<\/a>

Terra and Aqua MODIS true-color images (29 January)<\/p><\/div>\n

===== 31 January Update =====<\/strong><\/p>\n

\"Landsat<\/a>

Landsat 8 Panochromatic (0.59 \u00c2\u00b5m Band 8) image<\/p><\/div>\n

A 15-meter resolution Landsat 8 Panochromatic (0.59 \u00c2\u00b5m Band 8) image from the SSEC RealEarth<\/strong><\/a> web map server (above)<\/strong><\/em> showed the ice coverage in the far western portion of Lake Superior on 31 January. Land-fast ice in the Apostle Islands area of Wisconsin (located in the eastern part of the image)<\/em> was thicker and snow-covered, giving it a brighter white appearance.<\/p>\n","protected":false},"excerpt":{"rendered":"

An AWIPS II image comparison of Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel data and the corresponding “Snow\/cloud discrimination” Red\/Green\/Blue (RGB) product (above) provided a glimpse of many of the areas of ice coverage on the Great Lakes at 18:06 UTC on 29 January 2014. Ice began to increase (especially across the western Great Lakes) […]<\/p>\n","protected":false},"author":18,"featured_media":14864,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[44,55,12,45,49,48,5],"tags":[],"class_list":["post-14861","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-awips-ii","category-landsat","category-modis","category-redgreenblue-rgb-images","category-suomi_npp","category-viirs","category-winter-weather"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14861","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=14861"}],"version-history":[{"count":8,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14861\/revisions"}],"predecessor-version":[{"id":14870,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/14861\/revisions\/14870"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/14864"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=14861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=14861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=14861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}