{"id":44781,"date":"2022-02-23T22:07:19","date_gmt":"2022-02-23T22:07:19","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=44781"},"modified":"2022-02-23T22:10:04","modified_gmt":"2022-02-23T22:10:04","slug":"true-and-false-color-imagery-over-the-great-lakes","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/44781","title":{"rendered":"True- and False-color imagery over the Great Lakes"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/02\/VIIRSTrueColor-20220223_1753_1844_1937stepanim.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1302\" height=\"961\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/02\/VIIRSTrueColor-20220223_1753_1844_1937stepanim.gif\" alt=\"\" class=\"wp-image-44782\" \/><\/a><figcaption>VIIRS True-Color imagery over the western Great Lakes, 1753, 1844 and 1937 UTC on 23 February (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>VIIRS True-Color (above) and False-Color (below) imagery (available as an LDM pull from CIMSS) over the western Great Lakes at 1753 UTC (NOAA-20), 1844 UTC (Suomi-NPP) and 1937 UTC (NOAA-20, again) show the recent expansion of late-winter snowcover into southern Wisconsin and northern Iowa.  Additionally, ice over the lake (more easily differentiated from clouds in False-Color imagery because the use of the 2.25 \u00b5m band in the &#8216;red&#8217; component of that RGB means that ice\/snow acquire a cyan or blue coloring, whereas non-glaciated clouds are white) is apparent, especially near the shoreline.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/02\/VIIRSFalseColor-20220223_1753_1844_1937stepanim.gif\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/02\/VIIRSFalseColor-20220223_1753_1844_1937stepanim.gif\" alt=\"\" class=\"wp-image-44783\" width=\"840\" height=\"620\" \/><\/a><figcaption>VIIRS False-Color imagery over the western Great Lakes, 1753, 1844 and 1937 UTC on 23 February (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>True Color imagery exploits the presence of the 0.55 \u00b5m band (A true &#8216;green&#8217; band) on VIIRS.  Thus, relationships between red, blue and &#8216;veggie&#8217; bands are not needed for the creation of a simulated green band to make a true color imagery.<\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<p>VIIRS True- and False-color imagery is also available at the <a href=\"https:\/\/ge.ssec.wisc.edu\/viirs-today\/\">VIIRS Today website<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>VIIRS True-Color (above) and False-Color (below) imagery (available as an LDM pull from CIMSS) over the western Great Lakes at 1753 UTC (NOAA-20), 1844 UTC (Suomi-NPP) and 1937 UTC (NOAA-20, again) show the recent expansion of late-winter snowcover into southern Wisconsin and northern Iowa. Additionally, ice over the lake (more easily differentiated from clouds in [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":44783,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[78,49,48,5],"tags":[],"class_list":["post-44781","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noaa-20","category-suomi_npp","category-viirs","category-winter-weather"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/44781","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\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=44781"}],"version-history":[{"count":2,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/44781\/revisions"}],"predecessor-version":[{"id":44789,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/44781\/revisions\/44789"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/44783"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=44781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=44781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=44781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}