{"id":3952,"date":"2009-11-25T13:01:43","date_gmt":"2009-11-25T13:01:43","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=3952"},"modified":"2009-11-26T03:21:50","modified_gmt":"2009-11-26T03:21:50","slug":"super-typhoon-nida-26w-in-the-west-pacific-ocean","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/3952","title":{"rendered":"Super Typhoon Nida (26W) in the West Pacific Ocean"},"content":{"rendered":"
\"MTSAT-2<\/a>

MTSAT-2 IR images<\/p><\/div>\n

MTSAT-2 IR images from the CIMSS Tropical Cyclones<\/a><\/strong> site (above)<\/em><\/strong> revealed a well-defined eye associated with Super Typhoon Nida on 25 November 2009<\/strong>. Typhoon Nida underwent a period of very rapid intensification — increasing by 50 knots of speed in 12 hours — as seen on the CIMSS Automated Dvorak Technique<\/a><\/strong> plot (below)<\/em><\/strong>. Low values of deep layer wind shear<\/a><\/strong> and warm sea surface temperatures<\/a><\/strong> were favorable factors aiding further intensification.<\/p>\n

\"CIMSS<\/a>

CIMSS Automated Dvorak Technique (ADT) intensity estimate plot<\/p><\/div>\n

An AWIPS image of the MTSAT-2 IR channel with an overlay of ASCAT scatterometer winds (below)<\/em><\/strong> showed a core of strong winds (greater than 48 knots, red wind vectors)<\/em> surrounding the eye of Nida; the maximum ASCAT wind speed at that time was only 62 knots in the northern quadrant (but ASCAT wind speeds in excess of 34 knots tend to be underestimated)<\/em>.<\/p>\n

\"MTSAT-2<\/a>

MTSAT-2 IR image + ASCAT scatterometer winds<\/p><\/div>\n

A MODIS 11.0 \u00c2\u00b5m IR image (below)<\/em><\/strong> depicted the very cold cloud tops within the eyewall region, with a minimum value of -87\u00c2\u00ba C<\/strong> (black to gray color enhancement)<\/em>. However, there were some incredibly cold cloud tops of -97\u00c2\u00ba\u00c2\u00a0C<\/strong> (violet color enhancement)<\/em> in one of the outer bands in the northwest quadrant of Nida.<\/p>\n

\"MODIS<\/a>

MODIS 11.0 \u00c2\u00b5m IR image<\/p><\/div>\n

An animation of the MIMIC<\/a><\/strong> morphed POES microwave images (below)<\/em><\/strong> showed a contracting eyewall as the typhoon was experiencing rapid intensification just southwest of the island of Guam.<\/p>\n

\"MIMIC<\/a>

MIMIC morphed microwave image animation<\/p><\/div>\n

UPDATE: A microwave image from the DMSP SSM\/IS instrument (below)<\/em><\/strong> revealed a concentric eyewall structure at 19:43 UTC. A couple of hours later, the 21:00 UTC advisory from the Joint Typhoon Warning Center listed the winds of Super Typhoon Nida at 160 knots with gusts to 195 knots!<\/p>\n

\"DMSP<\/a>

DMSP SSM\/IS microwave image<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

MTSAT-2 IR images from the CIMSS Tropical Cyclones site (above) revealed a well-defined eye associated with Super Typhoon Nida on 25 November 2009. Typhoon Nida underwent a period of very rapid intensification — increasing by 50 knots of speed in 12 hours — as seen on the CIMSS Automated Dvorak Technique plot (below). Low values […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[12,20,26,25,2],"tags":[],"class_list":["post-3952","post","type-post","status-publish","format-standard","hentry","category-modis","category-mtsat","category-poes","category-satellite-winds","category-tropical-cyclones"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/3952","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=3952"}],"version-history":[{"count":18,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/3952\/revisions"}],"predecessor-version":[{"id":3955,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/3952\/revisions\/3955"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=3952"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=3952"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=3952"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}