{"id":26889,"date":"2018-02-01T15:59:32","date_gmt":"2018-02-01T15:59:32","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=26889"},"modified":"2018-08-14T19:37:00","modified_gmt":"2018-08-14T19:37:00","slug":"eruption-of-volcan-de-fuego-in-guatemala","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/26889","title":{"rendered":"Eruption of Volc\u00e1n de Fuego in Guatemala"},"content":{"rendered":"

\"GOES-16<\/a>

GOES-16 Near-Infrared “Snow\/Ice” (1.61 \u00b5m, top), Near-Infrared “Cloud Particle Size” (2.24 \u00b5m, middle) and Shortwave Infrared (3.9 \u00b5m, bottom) images [click to animate]<\/p><\/div>After a series of occasional weak emissions during the previous month, a small eruption of Volc\u00e1n de Fuego<\/strong><\/a> began during the pre-dawn hours on 01 February 2018. The thermal anomaly or “hot spot” could be seen on GOES-16 (GOES-East)<\/em> Near-Infrared “Snow\/Ice” (1.61 \u00b5m<\/strong><\/a>), Near-Infrared “Cloud Particle Size” (2.24 \u00b5m<\/strong><\/a>) and Shortwave Infrared (3.9 \u00b5m<\/strong><\/a>) images (above)<\/strong><\/em>. In terms of the two Near-Infrared bands, even though the 1.61 \u00b5m band has better spatial resolution (1 km at satellite sub-point), the 2-km resolution 2.24 \u00b5m band is spectrally located closer to the peak emitted radiance of very hot features such as active volcanoes or large fires (spectral response function plots<\/strong><\/a>).<\/p>\n

Multi-spectral retrievals of Ash Cloud Height from the NOAA\/CIMSS Volcanic Cloud Monitoring<\/strong><\/a> site (below)<\/strong><\/em> indicated that volcanic ash extended to altitudes in the 4-6 km range (yellow to green enhancement),<\/em> with isolated 7 km pixels at 1315 UTC. The product also showed the effect of a burst of southwesterly winds just after 11 UTC, which began to transport some of the ash northeastward (as mentioned in the 1332 UTC advisory<\/strong><\/a>).<\/p>\n

\"GOES-16<\/a>

GOES-16 Ash Height product [click to animate]<\/p><\/div>At 1624 UTC, a 30-meter resolution Landsat-8 False-color Red-Green-Blue (RGB) image viewed using RealEarth<\/strong><\/a> (below)<\/strong><\/em> showed the primary ash plume drifting to the west, with some lower-altitude ash spreading out northward and southward. A thermal anomaly was also evident at the summit of the volcano.<\/p>\n

\"Landsat-8<\/a>

Landsat-8 False-color RGB image [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

After a series of occasional weak emissions during the previous month, a small eruption of Volc\u00e1n de Fuego began during the pre-dawn hours on 01 February 2018. The thermal anomaly or “hot spot” could be seen on GOES-16 (GOES-East) Near-Infrared “Snow\/Ice” (1.61 \u00b5m), Near-Infrared “Cloud Particle Size” (2.24 \u00b5m) and Shortwave Infrared (3.9 \u00b5m) images […]<\/p>\n","protected":false},"author":18,"featured_media":26892,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74,55,53,45,9],"tags":[],"class_list":["post-26889","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-16","category-landsat","category-real-earth","category-redgreenblue-rgb-images","category-volcanic-activity"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/26889","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=26889"}],"version-history":[{"count":4,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/26889\/revisions"}],"predecessor-version":[{"id":29307,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/26889\/revisions\/29307"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/26892"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=26889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=26889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=26889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}