{"id":20615,"date":"2016-01-25T23:59:24","date_gmt":"2016-01-25T23:59:24","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=20615"},"modified":"2016-01-28T18:05:29","modified_gmt":"2016-01-28T18:05:29","slug":"eruption-of-the-popocatepetl-volcano-in-mexico","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/20615","title":{"rendered":"Eruption of the Popocat\u00e9petl Volcano in Mexico"},"content":{"rendered":"

\"Soumi<\/a>

Soumi NPP VIIRS true-color RGB images [click to enlarge]<\/p><\/div>The Popocat\u00e9petl<\/a><\/strong> Volcano in Mexico began erupting at 1546 UTC on 20 January 2016 (Washington VAAC message<\/strong><\/a>). The volcanic plume was evident on Suomi NPP VIIRS true-color Red\/Green\/Blue (RGB) images on 23, 24, and 25 January, as viewed using the SSEC RealEarth<\/strong><\/a> web map server (above)<\/strong><\/em>.<\/p>\n

Nighttime images of Suomi NPP VIIRS Shortwave Infrared (3.9 \u00b5m), Longwave Infrared Window (11.45 \u00b5m), and Day\/Night Band (0.7 \u00b5m) images at 0817 UTC on 25 January (below, <\/strong>courtesy of William Straka, SSEC) <\/em>revealed the hot spot of the erupting volcano summit (orange pixels),<\/em> and ample illumination from the Moon allowed the plume to be seen on the Day\/Night Band image. The large areas of bright city lights from Mexico City and Pueblo (located northwest and southeast of Popocat\u00e9petl, respectively) are also very apparent on the Day\/Night Band image.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS Shortwave Infrared (3.9 \u00b5m), Longwave Infrared Window (11.45 \u00b5m), and Day\/Night Band (0.7 \u00b5m) images [click to enlarge]<\/p><\/div>A legacy product for use in the detection of volcanic ash plumes is the Infrared “Split-Window” (11-12 \u00b5m) brightness temperature difference product (below),<\/strong><\/em> which showed the plume streaming eastward to northeastward during the 24-25 January period.<\/p>\n

\"Terra\/Aqua<\/a>

Terra\/Aqua MODIS and Suomi NPP VIIRS Infrared “Split Window” (11-12 \u00b5m) Brightness Temperature Difference product images [click to enlarge]<\/p><\/div>Taking advantage of the multi-spectral imagery available from the MODIS and VIIRS instruments on the Terra\/Aqua ans Suomi NPP satellites, quantitative products can be derived such as Ash Height, Ash Loading, Ash Effective Radius, and Ash Probability from the NOAA\/CIMSS Volcanic Coud Monitoring<\/strong><\/a> (below)<\/strong><\/em>.<\/p>\n

\"Terra\/Aqua<\/a>

Terra\/Aqua MODIS and Suomi NPP VIIRS Volcanic Ash Height product [click to enlarge]<\/p><\/div>

\"Terra\/Aqua<\/a>

Terra\/Aqua MODIS and Suomi NPP VIIRS Volcanic Ash Loading product [click to enlarge]<\/p><\/div>

\"Terra\/Aqua<\/a>

Terra\/Aqua MODIS and Suomi NPP VIIRS Volcanic Ash Effective Radius product [click to enlarge]<\/p><\/div>

\"Terra\/Aqua<\/a>

Terra\/Aqua MODIS and Suomi NPP VIIRS Volcanic Ash Probability product [click to enlarge]<\/p><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"

The Popocat\u00e9petl Volcano in Mexico began erupting at 1546 UTC on 20 January 2016 (Washington VAAC message). The volcanic plume was evident on Suomi NPP VIIRS true-color Red\/Green\/Blue (RGB) images on 23, 24, and 25 January, as viewed using the SSEC RealEarth web map server (above). Nighttime images of Suomi NPP VIIRS Shortwave Infrared (3.9 […]<\/p>\n","protected":false},"author":18,"featured_media":20621,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[12,53,45,49,48,9],"tags":[],"class_list":["post-20615","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-modis","category-real-earth","category-redgreenblue-rgb-images","category-suomi_npp","category-viirs","category-volcanic-activity"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/20615","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=20615"}],"version-history":[{"count":10,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/20615\/revisions"}],"predecessor-version":[{"id":20631,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/20615\/revisions\/20631"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/20621"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=20615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=20615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=20615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}