{"id":48722,"date":"2022-11-15T20:31:00","date_gmt":"2022-11-15T20:31:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=48722"},"modified":"2022-11-17T07:03:27","modified_gmt":"2022-11-17T07:03:27","slug":"convective-initiation-in-the-nighttime-microphysics-rgb","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/48722","title":{"rendered":"Convective initiation in the Nighttime Microphysics RGB"},"content":{"rendered":"\n<figure class=\"wp-block-video\"><video height=\"846\" style=\"aspect-ratio: 1470 \/ 846;\" width=\"1470\" controls loop src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/11\/goeswest_abi_radf_true_color_night_s20221115133020_e20221115180020_f28.mp4\"><\/video><figcaption>Night Microphysics RGB over the South Pacific, 1330 &#8211; 1800 UTC on 15 November 2022 <\/figcaption><\/figure>\n\n\n\n<p>The animation above shows the Nighttime Microphysics RGB (saved from <a href=\"https:\/\/geosphere.ssec.wisc.edu\/#coordinate:0,0;\">the CSPP Geosphere site<\/a>) over the islands of American Samoa.  (An animated gif is available <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/11\/CSPPGeoNightMicro_15Nov2022_1330_to_1730_anim.gif\">here<\/a>).  The annotated animation below highlights several features that are typical of convective development detection at night.  Low clouds become apparent shortly before <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/11\/CSPPGeoNightMicro_15Nov2022_1450UTCannotate.png\">1450 UTC (when they are circled)<\/a>;  subsequent color changes in those low clouds (in this case, a reddening that then detaches from the cloud) are most likely orphaned anvils (<a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/11\/CSPPGeoNightMicro_15Nov2022_1500-1530UTCannotateanim.gif\">highlighted with arrows in the 1500-1530 UTC imagery<\/a> &#8212; but the orphaned anvil can be tracked at later times, as it moves farther to the south) whose appearance frequently precedes successful convection; further reddening of the low clouds, as <a rel=\"noreferrer noopener\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/11\/CSPPGeoNightMicro_15Nov2022_1610-1630UTC_annontateanim.gif\" target=\"_blank\">highlighted by arrows from 1610 to 1630 UTC<\/a>,  shows a transition of the low clouds (made up of water droplets) to higher clouds that are glaciating.  At the end of the animation, note that active convection is near the Manu&#8217;a Islands.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/11\/CSPPGeoNightMicro_15Nov2022_1330_to_1730UTCannotatedanim.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1001\" height=\"576\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2022\/11\/CSPPGeoNightMicro_15Nov2022_1330_to_1730UTCannotatedanim.gif\" alt=\"\" class=\"wp-image-48728\"\/><\/a><figcaption>Annotated Night Microphysics RGB animation highlighting features discussed in the text, 1330 -1730 UTC on 15 November 2022 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>Careful inspection of the Night Microphysics RGB can help you  anticipate where convection might be developing at night.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The animation above shows the Nighttime Microphysics RGB (saved from the CSPP Geosphere site) over the islands of American Samoa. (An animated gif is available here). The annotated animation below highlights several features that are typical of convective development detection at night. Low clouds become apparent shortly before 1450 UTC (when they are circled); subsequent [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":48744,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[42,114],"tags":[],"class_list":["post-48722","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-convective-initiation","category-goes-18"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/48722","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=48722"}],"version-history":[{"count":9,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/48722\/revisions"}],"predecessor-version":[{"id":48749,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/48722\/revisions\/48749"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/48744"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=48722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=48722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=48722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}