{"id":24584,"date":"2017-07-28T21:59:20","date_gmt":"2017-07-28T21:59:20","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=24584"},"modified":"2017-07-29T21:16:02","modified_gmt":"2017-07-29T21:16:02","slug":"aircraft-dissipation-trail-in-iowa","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/24584","title":{"rendered":"Aircraft dissipation trail in Iowa"},"content":{"rendered":"<p><em>* GOES-16 data posted on this page are preliminary, non-operational and are undergoing testing *<\/em><\/p>\n<p><center><\/p>\n<blockquote class=\"twitter-tweet\" data-lang=\"en\">\n<p dir=\"ltr\" lang=\"en\">Can you find the plane near Des Moines? <a href=\"https:\/\/twitter.com\/hashtag\/contrail?src=hash\">#contrail<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/GOES16?src=hash\">#GOES16<\/a> <a href=\"https:\/\/t.co\/H6kQQzrlc6\">pic.twitter.com\/H6kQQzrlc6<\/a><\/p>\n<p>\u2014 NWS Des Moines (@NWSDesMoines) <a href=\"https:\/\/twitter.com\/NWSDesMoines\/status\/890961764745084929\">July 28, 2017<\/a><\/p><\/blockquote>\n<p><script async src=\"\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/center><\/p>\n<p>An aircraft &#8220;dissipation trail&#8221; formed over far southern Iowa during the late morning hours on <strong><a href=\"http:\/\/www.wpc.ncep.noaa.gov\/dailywxmap\/index_20170728.html\">28 July 2017<\/a><\/strong> &#8212; which was seen on GOES-16 &#8220;Red&#8221; Visible (<a href=\"http:\/\/www.goes-r.gov\/education\/docs\/ABI-bands-FS\/ABI%20Fact%20Sheet%20Band%202.pdf\"><strong>0.64 \u00b5m<\/strong><\/a>), Near-Infrared &#8220;Snow\/Ice&#8221; (<a href=\"http:\/\/www.goes-r.gov\/education\/docs\/ABI-bands-FS\/ABI_Band%205_snow-ice_factsheet_FINAL.pdf\"><strong>1.61\u00a0 \u00b5m<\/strong><\/a>) and Shortwave Infrared (<a href=\"http:\/\/www.goes-r.gov\/education\/docs\/ABI-bands-FS\/ABIBand7ShortwaveWindowFINAL.pdf\"><strong>3.9) \u00b5m<\/strong><\/a>) imagery<em><strong> (below)<\/strong><\/em>.<\/p>\n<p><div style=\"width: 650px\" class=\"wp-caption aligncenter\"><a class=\"thumbnail\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2017\/07\/170728_goes16_Visible_SnowIce_ShortwaveInfrared_IA_aircraft_dissipation_trail_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"thumbnail\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2017\/07\/320x1280_AGOES16_B257_G16_VIS_NIR_SWIR_IA_DISTRAIL_3PANEL_28JUL2017_2017209_150718_0003PANELS.GIF\" alt=\"GOES-16 \" width=\"640\" height=\"480\" \/><\/a><p class=\"wp-caption-text\">GOES-16 &#8220;Red&#8221; Visible (0.64 \u00b5m, tpo), Near-Infrared &#8220;Snow\/Ice&#8221; (1.61 \u00b5m, middle) and Shortwave Infrared (3.9) \u00b5m, bottom) images [click to play animation]<\/p><\/div>As explained in <strong><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/20850\">this blog post<\/a><\/strong>, these types of cloud features are caused by aircraft either ascending or descending through a cloud layer composed of supercooled water droplets. Cooling from wake turbulence (<a href=\"http:\/\/journals.ametsoc.org\/doi\/pdf\/10.1175\/2009BAMS2905.1\"><strong>reference<\/strong><\/a>) &#8212; and\/or the particles from the jet engine exhaust acting as ice condensation nuclei &#8212; then cause the small supercooled water droplets to change phase and transform into larger ice crystals (which often fall from the cloud layer, creating \u201c<a href=\"https:\/\/en.wikipedia.org\/wiki\/Fallstreak_hole\"><strong>fall streak holes<\/strong><\/a>\u201c).<\/p>\n<p>Therefore, the glaciated aircraft dissipation trail appears <strong>darker<\/strong> on the 1.61 \u00b5m &#8220;snow\/ice&#8221; images (since ice is a strong <em>absorber<\/em> of radiation at that wavelength), and <strong>colder<\/strong> <em>(brighter white)<\/em> on the 3.9 \u00b5m shortwave infrared images.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>* GOES-16 data posted on this page are preliminary, non-operational and are undergoing testing * Can you find the plane near Des Moines? #contrail #GOES16 pic.twitter.com\/H6kQQzrlc6 \u2014 NWS Des Moines (@NWSDesMoines) July 28, 2017 An aircraft &#8220;dissipation trail&#8221; formed over far southern Iowa during the late morning hours on 28 July 2017 &#8212; which was [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":24597,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21,74],"tags":[],"class_list":["post-24584","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation","category-goes-16"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/24584","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=24584"}],"version-history":[{"count":17,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/24584\/revisions"}],"predecessor-version":[{"id":24602,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/24584\/revisions\/24602"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/24597"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=24584"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=24584"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=24584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}