{"id":25847,"date":"2017-10-21T12:59:51","date_gmt":"2017-10-21T12:59:51","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=25847"},"modified":"2017-10-23T20:55:29","modified_gmt":"2017-10-23T20:55:29","slug":"super-typoon-lan-in-the-west-pacific","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/25847","title":{"rendered":"Super Typhoon Lan in the West Pacific"},"content":{"rendered":"

\"Advanced<\/a>

Advanced Dvorak Technique (ADT) plot for Typhoon Lan [click to enlarge]<\/p><\/div>A plot of the Advanced Dvorak Technique<\/strong><\/a> for Typhoon Lan (above)<\/strong><\/em> showed that the tropical cyclone underwent a period of rapid intensification during the 00-12 UTC period on 20 October 2017.<\/p>\n

A 24-hour animation of Himawari-8 rapid-scan (2.5 minute interval) Infrared Window (10.4 \u00b5m) images (below)<\/strong><\/em> revealed the development of a very large eye during the 20 October\/06 UTC to 21 October\/06 UTC period.<\/p>\n

\"Himawari-8<\/a>

Himawari-8 Infrared Window (10.4 \u00b5m) images [click to play MP4 animation]<\/p><\/div>A nighttime comparison of Suomi NPP VIIRS Day\/Night Band (0.7 \u00b5m) and Infrared Window (11.45 \u00b5m) images at 1700 UTC or 2:00 AM kocal time (below; <\/strong>courtesy of William Straka, CIMSS\/SSEC)<\/strong><\/em> provided a good visualization of the “stadium effect” — an eye that was more narrow at the surface, with a larger diameter at higher altitudes. A packet of mesospheric airglow waves (reference<\/strong><\/a>) was also evident on the Day\/Night Band image, propagating south-southeastward away from the eye.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS Day\/Night Band (0.7 \u00b5m) and Infrared Window (10.4 \u00b5m) images [click to enlarge]<\/p><\/div>A 2-panel comparison of Himawari-8 Visible (0.64 \u00b5m) and Infrared Window (11.45 \u00b5m) images (below)<\/strong> <\/em>showed the eye of Lan after it attained Super Typhoon status at 18 UTC on 20 October. Mesovortices could\u00a0 be seen within the eye on the rapid-scan images.<\/p>\n

\"Himawari-8<\/a>

Himawari-8 Visible (0.64 \u00b5m, left) and Infrared Window (10.4 \u00b5m, right) images [click to play MP4 animation]<\/p><\/div>A large amount of moisture was associated with this tropical cyclone, as depicted by hourly images of the MIMIC Total Precipitable Water<\/strong><\/a> product (below)<\/strong><\/em> — note the large area with TPW values of 70 mm or greater (light violet color enhancement)<\/em>.<\/p>\n

\"MIMIC<\/a>

MIMIC Total Precipitable Water product [click to play animation]<\/p><\/div>A TPW value of 72.5 mm (2.87 inches) was derived from the Minamidaitojima, Japan rawinsonde data at 12 UTC on 21 October (below)<\/strong><\/em>. Minamidaitojima is the largest island in the Daito Islands group southeast of Okinawa, Japan\u00a0 — this station was just to the northeast of Lan around 12 UTC.<\/p>\n

\"Rawinsonde<\/a>

Rawinsonde data from Minamidaitojima, Japan [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

A plot of the Advanced Dvorak Technique for Typhoon Lan (above) showed that the tropical cyclone underwent a period of rapid intensification during the 00-12 UTC period on 20 October 2017. A 24-hour animation of Himawari-8 rapid-scan (2.5 minute interval) Infrared Window (10.4 \u00b5m) images (below) revealed the development of a very large eye during […]<\/p>\n","protected":false},"author":18,"featured_media":25851,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[62,49,2,48],"tags":[],"class_list":["post-25847","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-himawari-8","category-suomi_npp","category-tropical-cyclones","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/25847","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=25847"}],"version-history":[{"count":9,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/25847\/revisions"}],"predecessor-version":[{"id":25857,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/25847\/revisions\/25857"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/25851"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=25847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=25847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=25847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}