{"id":1970,"date":"2009-02-08T23:07:16","date_gmt":"2009-02-08T23:07:16","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=1970"},"modified":"2009-02-10T22:32:48","modified_gmt":"2009-02-10T22:32:48","slug":"melting-snow-and-thinning-ice","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/1970","title":{"rendered":"Melting snow and thinning ice"},"content":{"rendered":"
\"MODIS<\/a>

MODIS true color and false color images<\/p><\/div>\n

The National Weather Service at Milwaukee\/Sullivan<\/strong><\/a> posted a nice animation of MODIS true color imagery<\/strong><\/a> (using the\u00c2\u00a0 AWIPS “MODIS True Color Imagery Viewer” that Jordan Gerth developed as part of the CIMSS\/SSEC MODIS in D2D project<\/strong><\/a>) <\/em>which <\/em>shows the breakup of ice in southern Lake Michigan and the melting of snow cover over far southeastern Wisconsin during a 3-day period of warm temperatures in early February 2009. A comparison of MODIS “true color” (Red\/Green\/Blue composite using channels 01\/04\/03)<\/em> and “false color” (Red\/Green\/Blue composite using channels 07\/02\/01)<\/em> images from the SSEC MODIS Today<\/strong><\/a> site (above)<\/strong><\/em> also showed some interesting clues about the thinning of the ice on some of the inland lakes and rivers on 08 February 2008<\/strong><\/a>. Snow and ice appear as white features on the true color image, but appear as varying shades of cyan on the false color image — however, thinner ice shows up as a darker blue<\/em> color on the false color image (due in part to a higher meltwater content within\u00c2\u00a0 the top layer of the ice)<\/em>.<\/p>\n

Even though the appearance of the inland lake ice was beginning to show signs of degradation and thinning\u00c2\u00a0 on the MODIS imagery, recent reports of ice thickness (below,<\/strong> courtesy of Lake-Link.com<\/strong><\/a>)<\/em> indicated that there was still over 20 inches of ice on some parts of the larger lakes such as Lake Winnebago (the largest lake in east-central Wisconsin)<\/em>, as well as on smaller lakes like Lake Mendota (the largest of the lakes in the Madison area)<\/em>. Note that some of the lakes in southern Wisconsin are already ice-free — these lakes exhibit a darker appearance on both the true color and the false color images. In addition, a significant amount of lake ice can still be seen along the eastern nearshore waters of Lake Michigan.<\/p>\n

\"Lake<\/a>

Lake Winnebago ice thickness (courtesy of Lake-Link.com)<\/p><\/div>\n

\"Lake<\/a>

Lake Mendota ice thickness (courtesy of Lake-Link.com)<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

The National Weather Service at Milwaukee\/Sullivan posted a nice animation of MODIS true color imagery (using the\u00c2\u00a0 AWIPS “MODIS True Color Imagery Viewer” that Jordan Gerth developed as part of the CIMSS\/SSEC MODIS in D2D project) which shows the breakup of ice in southern Lake Michigan and the melting of snow cover over far southeastern […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[12,5],"tags":[],"class_list":["post-1970","post","type-post","status-publish","format-standard","hentry","category-modis","category-winter-weather"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/1970","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=1970"}],"version-history":[{"count":18,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/1970\/revisions"}],"predecessor-version":[{"id":1972,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/1970\/revisions\/1972"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=1970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=1970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=1970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}