{"id":608,"date":"2008-02-10T23:59:34","date_gmt":"2008-02-10T23:59:34","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/608"},"modified":"2008-02-20T16:26:46","modified_gmt":"2008-02-20T16:26:46","slug":"using-goes-10-imagery-to-detect-ash-clouds-from-the-tungurahua-volcano-in-ecuador","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/608","title":{"rendered":"Using GOES-10 imagery to detect ash clouds from the Tungurahua volcano in Ecuador"},"content":{"rendered":"

\"GOES-10<\/a><\/p>\n

The Tungurahua Volcano<\/strong><\/a> in Ecuador began to have a series of eruptions during the first 2 weeks of February 2008 (Washington VAAC advisories<\/a>)<\/strong>. A comparison of 4 different GOES-10 Imager and Sounder products (above)<\/strong><\/em> shows the Imager 10.5\u00c2\u00b5m “IR window”, the Imager 10.5-12.0\u00c2\u00b5m “split window difference”, the Sounder 11.0-12.0\u00c2\u00b5m “split window difference”, and the Sounder 7.4-13.3\u00c2\u00b5m “SO2 detection product”. A volcanic ash plume was evident on both the Imager and Sounder split window difference products, moving southwestward away from the volcano at 16:31-16:45 UTC on 06 February 2008<\/strong>. The lack of a signal on the SO2 detection product could have been due to masking by clouds, or the fact that very little SO2 was present in that particular volcanic ash plume.<\/p>\n

\"GOES-10<\/a><\/p>\n

A comparison of GOES-10 split window difference and IR window images from 06:15-13:15 UTC on 06 February (above)<\/strong><\/em> show the improved volcanic ash detection capability of the 11-12\u00c2\u00b5m technique — ash shows up as red features in the split window difference product.<\/p>\n

\"GOES-10<\/a><\/p>\n

An animation of the GOES-10 visible channel imagery from 06 February 2008<\/strong> (above) <\/strong><\/em>shows the plume of volcanic ash drifting southwestward.<\/p>\n

\"GOES-10<\/a><\/p>\n

An animation of GOES-10 IR “split window difference” (10.5\u00c2\u00b5m – 12.0\u00c2\u00b5m, top panel)<\/em> and IR window (10.5\u00c2\u00b5m, bottom panel)<\/em> imagery from (above)<\/em><\/strong> showed two separate pulses of volcanic ash cloud (gray enhancement) <\/em>that were drifting southwestward on that day. Two days later, on 08 February (below)<\/em><\/strong>,<\/em> a new ash cloud was seen to be drifting almost due west.<\/p>\n

\"GOES-10<\/a><\/p>\n

Then on 10 February (below),<\/em><\/strong> two separate ash clouds could be seen — one drifting eastward, and one drifting westward — as changes in wind direction with height (wind shear)<\/em> moved the volcanic ash plumes in different directions.<\/p>\n

\"GOES-10<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The Tungurahua Volcano in Ecuador began to have a series of eruptions during the first 2 weeks of February 2008 (Washington VAAC advisories). A comparison of 4 different GOES-10 Imager and Sounder products (above) shows the Imager 10.5\u00c2\u00b5m “IR window”, the Imager 10.5-12.0\u00c2\u00b5m “split window difference”, the Sounder 11.0-12.0\u00c2\u00b5m “split window difference”, and the Sounder […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14,9],"tags":[],"class_list":["post-608","post","type-post","status-publish","format-standard","hentry","category-goes-10","category-volcanic-activity"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/608","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=608"}],"version-history":[{"count":0,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/608\/revisions"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=608"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=608"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=608"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}