{"id":10392,"date":"2012-05-19T23:59:58","date_gmt":"2012-05-19T23:59:58","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=10392"},"modified":"2012-05-21T04:52:48","modified_gmt":"2012-05-21T04:52:48","slug":"tropical-storm-alberto","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/10392","title":{"rendered":"Tropical Storm Alberto"},"content":{"rendered":"
\"AVHRR<\/a>

AVHRR 10.8 \u00c2\u00b5m, MODIS 11.0 \u00c2\u00b5m, and VIIRS 11.45 \u00c2\u00b5m IR images <\/p><\/div>\n

The 2012 Atlantic Basin tropical cyclone season began with the formation of Tropical Storm Alberto<\/a><\/strong> off the coast of South Carolina on 19 May 2012<\/a><\/strong>. A sequence of AWIPS images of 1-km resolution POES AVHRR 10.8 \u00c2\u00b5m, Terra\/Aqua MODIS 11.0 \u00c2\u00b5m, and Suomi NPP VIIRS 11.45 \u00c2\u00b5m IR images (above)<\/em><\/strong> showed the growth of deep convecion associated with Alberto as the system moved southwestward — cloud top IR brightness temperatures were as cold as -72\u00c2\u00ba C on the MODIS image at 16:03 UTC.<\/p>\n

A comparison of the 18:27 UTC 1-km resolution Suomi NPP VIIRS 11.45 \u00c2\u00b5m IR image with the 18:15 UTC 4-km resolution GOES-13 10.7 \u00c2\u00b5m IR image (below)<\/em><\/strong> demonstrated the improvement in cloud top feature identification with higher spatial resolution, as well as showed the effect of parallax due to the large satellite viewing angle from GOES-13.<\/p>\n

\"GOES-13<\/a>

GOES-13 10.7 \u00c2\u00b5m IR + Suomi NPP VIIRS 11.45 \u00c2\u00b5m IR image<\/p><\/div>\n

An animation of GOES-13 0.63 \u00c2\u00b5m visible channel images from the CIMSS Tropical Cyclones<\/a><\/strong> site (below)<\/em><\/strong> showed the development of a more organized cloud structure during the day. In addition, a 21 UTC ship report near the center of Alberto noted wind gusts to 65 knots, which promted NHC to issue an update<\/a><\/strong> to note an increase in intensity.<\/p>\n

\"GOES-13<\/a>

GOES-13 0.63 \u00c2\u00b5m visible channel images + Ship reports<\/p><\/div>\n

========== 20 May Update ==========<\/center><\/p>\n

An AWIPS night-time image of the Suomi NPP VIIRS 0.7 \u00c2\u00b5m “Day\/Night Band” (below)<\/em><\/strong> revealed some of the cloud structure associated with Tropical Storm Alberto at 06:45 UTC (2:45 am local time)<\/em>. Given that there was a “New Moon” phase at this time, not a great deal of reflected light was avaiable to allow the Day\/Night Band imagery to show more cloud detail.<\/p>\n

Lights from cities and towns across the far southeastern US could also be seen in the Day\/Night Band image (although some of the urban area light signatures were attenuated somewhat by overhead cloud cover).<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS 0.7 \u00c2\u00b5m Day\/Night Band image<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

The 2012 Atlantic Basin tropical cyclone season began with the formation of Tropical Storm Alberto off the coast of South Carolina on 19 May 2012. A sequence of AWIPS images of 1-km resolution POES AVHRR 10.8 \u00c2\u00b5m, Terra\/Aqua MODIS 11.0 \u00c2\u00b5m, and Suomi NPP VIIRS 11.45 \u00c2\u00b5m IR images (above) showed the growth of deep […]<\/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":[22,11,12,26,49,2,48],"tags":[],"class_list":["post-10392","post","type-post","status-publish","format-standard","hentry","category-avhrr","category-goes-13","category-modis","category-poes","category-suomi_npp","category-tropical-cyclones","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/10392","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=10392"}],"version-history":[{"count":11,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/10392\/revisions"}],"predecessor-version":[{"id":10403,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/10392\/revisions\/10403"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=10392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=10392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=10392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}