{"id":13814,"date":"2013-09-04T23:59:19","date_gmt":"2013-09-04T23:59:19","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=13814"},"modified":"2013-09-05T20:31:39","modified_gmt":"2013-09-05T20:31:39","slug":"tropical-storm-gabrielle-2","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/13814","title":{"rendered":"Tropical Storm Gabrielle"},"content":{"rendered":"
\"GOES-13<\/a>

GOES-13 0.63 \u00c2\u00b5m visible channel image (click image to play animation)<\/p><\/div>\n

1-km resolution GOES-13 0.63 \u00c2\u00b5m visible channel images (above; click image to play animation)<\/strong><\/em> revealed a pronounced convective burst associated with Tropical Depression #7, which was centered just southeast of Puerto Rico late in the day on 04 September 2013. On the final visible image before darkness, a pair of small but distinct overshooting tops could be seen, which actually signalled the beginning of another convective burst.<\/p>\n

The corresponding 4-km resolution GOES-13 10.7 \u00c2\u00b5m IR channel images (below; click image to play animation)<\/strong><\/em> showed that there were a series 3 well-defined convective bursts (2 more followed after darkness), each exhibiting areas with cloud-top IR brightness temperatures of -80\u00c2\u00ba C or colder (violet color enhancement)<\/em>. On the final image in the animation (at 02:45 UTC), the coldest IR brightness temperature was -86\u00c2\u00ba C This was about the time that Tropical Depression #7 was upgraded to Tropical Storm Gabrielle<\/strong><\/a>.<\/p>\n

\"GOES-13<\/a>

GOES-13 10.7 \u00c2\u00b5m IR channel images (click image to play animation)<\/p><\/div>\n

A 1-km resolution POES AVHRR 12.0 \u00c2\u00b5m IR image at 01:16 UTC (below)<\/strong><\/em> showed one overshooting top that exhibited an IR brightness temperature of -90\u00c2\u00ba C (dark violet enhancement)<\/em>.<\/p>\n

\"POES<\/a>

POES AVHRR 12.0 \u00c2\u00b5m IR image<\/p><\/div>\n

Two GOES-13 IR images at 03:45 UTC on 05 September from the CIMSS Tropical Cyclones<\/strong><\/a> site (below)<\/strong><\/em> showed that (1) Gabrielle was in an environment characterized by a light amount (around 10 knots) of deep layer (200-850 hPa) wind shear, and (2) a well-defined low-level cyclonic circulation was difficult to distinguish with the ASCAT surface scatterometer winds at that time.<\/p>\n

\"GOES-13<\/a>

GOES-13 IR image with deep layer wind shear analysis<\/p><\/div>\n

\"GOES-13<\/a>

GOES-13 10.7 \u00c2\u00b5m IR image with ASCAT surface scatterometer winds<\/p><\/div>\n

 <\/p>\n

===== 05 September Update =====<\/strong><\/p>\n

 <\/p>\n

\"DMSP-17<\/a>

DMSP-17 SSMIS 85 GHz microwave brightness temperature<\/p><\/div>\n

On the morning of 05 September, a DMSP-17 SSMIS<\/strong><\/a> 85 GHz microwave brightness temperature image at 10:42 UTC (above)<\/strong><\/em> and GOES-13 10.7 \u00c2\u00b5m IR images (below)<\/strong><\/em> suggested that the mid-level circulation center of of Gabrielle was reforming well to to the east of the original fix location low-level circulation center. Around the time of the end of the IR image animation, Gabrielle was downgraded to a Tropical Depression.<\/p>\n

\"GOES-13<\/a>

GOES-13 10.7 \u00c2\u00b5m IR images<\/p><\/div>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

1-km resolution GOES-13 0.63 \u00c2\u00b5m visible channel images (above; click image to play animation) revealed a pronounced convective burst associated with Tropical Depression #7, which was centered just southeast of Puerto Rico late in the day on 04 September 2013. On the final visible image before darkness, a pair of small but distinct overshooting tops […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22,11,26,25,2],"tags":[],"class_list":["post-13814","post","type-post","status-publish","format-standard","hentry","category-avhrr","category-goes-13","category-poes","category-satellite-winds","category-tropical-cyclones"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/13814","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=13814"}],"version-history":[{"count":10,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/13814\/revisions"}],"predecessor-version":[{"id":13824,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/13814\/revisions\/13824"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=13814"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=13814"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=13814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}