{"id":18042,"date":"2015-03-30T21:59:47","date_gmt":"2015-03-30T21:59:47","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=18042"},"modified":"2015-04-03T18:12:49","modified_gmt":"2015-04-03T18:12:49","slug":"typhoon-maysak-in-the-west-pacific-ocean","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/18042","title":{"rendered":"Typhoon Maysak in the West Pacific Ocean"},"content":{"rendered":"
\"Himawari-8<\/a>

Himawari-8 AHI 0.64 \u00b5m visible channel images (click to play animation)<\/p><\/div>\n

McIDAS-V images of Himawari-8 AHI 0.64 \u00b5m visible channel data (above; click image to play animation; <\/strong>images courtesy of William Straka, SSEC)<\/strong><\/em> showed the evolution of Category 2 Typhoon Maysak over the West Pacific Ocean on 30 March 2015. A number of large convective bursts can be seen surrounding the eye, along with more subtle features such as transverse banding.<\/p>\n

An 11:01 UTC MTSAT-2 10.8 \u00b5m IR image with an overlay of 11:11 UTC Metop ASCAT surface scatterometer winds from the CIMSS Tropical Cyclones<\/strong><\/a> site (below)<\/strong><\/em> revealed the wind field in the eastern semicircle of the tropical cyclone.<\/p>\n

\"MTSAT-2<\/a>

MTSAT-2 10.8 \u00b5m IR image with Metop ASCAT surface scatterometer winds<\/p><\/div>\n

Several hours later, a comparison of a 19:01 UTC MTSAT-2 10.8 \u00b5m IR image with a 19:00 UTC DMSP SSMIS 85 GHz microwave image (below)<\/strong><\/em> showed that the microwave instrument was able to “see” through the clouds surrounding the eye to depict the larger size of the eyewall structure.<\/p>\n

\"MTSAT-2<\/a>

MTSAT-2 10.8 \u00b5m IR image + DMSP SSMIS 85 GHz microwave image<\/p><\/div>\n

During the later hours of 30 March, Typhoon Maysak underwent a period of rapid intensification from a Category 2 to a Category 4 storm, as depicted on a plot of the Advanced Dvorak Technique (ADT) intensity estimate (below)<\/strong><\/em>. Rapid intensification occurred as the tropical cyclone was moving over an area of relatively high ocean heat content<\/strong><\/a>.<\/p>\n

\"Advanced<\/a>

Advanced Dvorak Technique (ADT) intensity estimate plot for Typhoon Maysak<\/p><\/div>\n

MTSAT-2 10.8 \u00b5m IR channel images during this period of rapid intensification are shown below (click image to play animation).<\/strong><\/em><\/p>\n

\"MTSAT-2<\/a>

MTSAT-2 10.8 \u00b5m IR images (click to play animation)<\/p><\/div>\n

The MIMIC Total Precipitable Water<\/strong><\/a> (TPW) product (below; click image to play animation)<\/strong><\/em> depicted TPW values in excess of 60 mm or 2.36 inches (darker red color enhancement)<\/em> associated with Maysak as the tropical cyclone moved between the islands of Guam (PGUM) and Yap (PTYA). Yap<\/strong><\/a> recorded over 4 inches of rainfall.<\/p>\n

\"MIMIC<\/a>

MIMIC Total Precipitable Water product (click to play animation)<\/p><\/div>\n

31 March 2015 Update:<\/strong> Maysak intensified to a Category 5 Super Typhoon (ADT plot<\/strong><\/a>). Full-resolution visible imagery from Himawari-8 AHI is shown below; a faster animation is available here<\/a><\/strong>. A number of mesovortices could be seen within the eye of Maysak; these mesovortices were also evident in photos of the eye of the typhoon taken by an astronaut on the International Space Station, as posted on Twitter here<\/strong><\/a> and here<\/strong><\/a>.<\/p>\n

\"Himawari-8<\/a>

Himawari-8 AHI 0.64 \u00b5m visible channel images (click to play animation)<\/p><\/div>\n

Images from all 16 channels<\/strong><\/a> from the Himawari-8 AHI can be combined into one animation, showing the different information provided by each of the spectral bands — such an animation is shown below, using data from 0600 UTC on 31 March 2015. The Infrared data is shown at full (2-km) resolution; Visible\/near Infrared imagery is scaled down by a factor of 2 (0.46 \u00b5m, 0.51 \u00b5m, 0.85 \u00b5m) or by a factor of 4 (0.64 \u00b5m). A similar animation, but without annotation or color enhancement, is available here<\/a><\/strong>.<\/p>\n

\"Himawari-8<\/a>

Himawari-8 AHI images for all 16 channels at 0600 UTC (click to enlarge)<\/p><\/div>\n

Maysak had remained in an environment of relatively low deep-layer wind shear (below; click image to play animation),<\/strong><\/em> which was favorable for its trend of continued intensification.<\/p>\n

\"MTSAT-2<\/a>

MTSAT-2 10.8 \u00b5m IR channel images, with deep-layer wind shear (click to play animation)<\/p><\/div>\n

However, in a comparison of MTSAT-2 10.8 \u00b5m IR channel and TRMM TMI 85 GHz microwave images around 14 UTC (below),<\/strong><\/em> it can be seen that the microwave image indicated that an eyewall replacement cycle might be underway (which would suggest a subsequent decrease in the typhoon’s intensity within the coming hours). This was supported by the ADT intensity estimate plot<\/strong><\/a>, which dropped the intensity of Maysak just below 140 knots after 18 UTC on 31 March.<\/p>\n

\"MTSAT-2<\/a>

MTSAT-2 10.7 \u00b5m IR image and TRMM TMI 85 GHz microwave image<\/p><\/div>\n

01 April Update:<\/strong> A nighttime comparison of Suomi NPP VIIRS 0.7 \u00b5m Day\/Night Band and 11.45 \u00b5m IR images at 16:58 UTC on 01 April (below; <\/strong>images courtesy of William Straka, SSEC)<\/strong><\/em> showed the eye of Typhoon Maysak after it had weakened to a Category 4 storm.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS 0.7 \u00b5m Day\/Night Band and 11.45 \u00b5m IR channel images<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

McIDAS-V images of Himawari-8 AHI 0.64 \u00b5m visible channel data (above; click image to play animation; images courtesy of William Straka, SSEC) showed the evolution of Category 2 Typhoon Maysak over the West Pacific Ocean on 30 March 2015. A number of large convective bursts can be seen surrounding the eye, along with more subtle […]<\/p>\n","protected":false},"author":18,"featured_media":18081,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[56,62,51,58,20,25,2],"tags":[],"class_list":["post-18042","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dmsp","category-himawari-8","category-mcidas-v","category-metop","category-mtsat","category-satellite-winds","category-tropical-cyclones"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/18042","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=18042"}],"version-history":[{"count":26,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/18042\/revisions"}],"predecessor-version":[{"id":18103,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/18042\/revisions\/18103"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/18081"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=18042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=18042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=18042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}