{"id":21773,"date":"2016-08-21T23:59:11","date_gmt":"2016-08-21T23:59:11","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=21773"},"modified":"2016-08-24T17:51:41","modified_gmt":"2016-08-24T17:51:41","slug":"goes-14-srso-r-wildfire-in-idaho","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/21773","title":{"rendered":"GOES-14 SRSO-R: wildfire in Idaho"},"content":{"rendered":"

\"GOES-14<\/a>

GOES-14 0.63 \u00b5m Visible (top), 3.9 \u00b5m Shortwave Infrared (middle) and 10.7 \u00b5m Infrared Window (bottom) images, with surface reports plotted in yellow [click to play MP4 animation]<\/p><\/div>The Pioneer Fire<\/strong><\/a> in central Idaho produced another pyroCumulonimbus (pyroCb) cloud on 21 August 2016<\/strong><\/a> (the first was on 19 August<\/strong><\/a>). GOES-14 was in SRSO-R<\/strong><\/a> mode, and sampled the fire with 1-minute imagery (above;<\/strong><\/em> also available as a large 73 Mbyte animated GIF<\/strong><\/a><\/em>) — a large smoke plume was evident on 0.63 \u00b5m Visible images as it moved eastward; large fire hot spots (red pixels)<\/em> were seen on 3.9 \u00b5m Shortwave Infrared images; on 10.7 \u00b5m Infrared Window images, the cloud-top IR brightness temperature cooled to -35\u00ba C (darker green enhancement)<\/em> between 2249-2307 UTC as it moved over Stanley Ranger Station (KSNY), not quite reaching the -40\u00ba C threshold to be classified as a pyroCb.<\/p>\n

However, a 1-km resolution NOAA-19 AVHRR 10.8 \u00b5m Infrared Window image (below;<\/strong> courtesy of<\/em> Ren\u00e9 Servranckx) <\/strong><\/em>revealed a minimum cloud-top IR brightness temperature of -48.3\u00ba C (dark green color enhancement)<\/em>.<\/p>\n

\"NOAA-19<\/a>

NOAA-19 AVHRR 0.64 \u00b5m visible (top left), 3.7 \u00b5m shortwave IR (top right), 10.8 \u00b5m IR window (bottom left) and false-color RGB composite image (bottom right) [click to enlarge]<\/p><\/div>A larger-scale comparison of the NOAA-19 AVHRR visible, shortwave infrared and infrared window images is shown below.<\/p>\n

\"NOAA-19<\/a>

NOAA-19 Visible (0.63 \u00b5m), Shortwave Infrared (3.7 \u00b5m) and Infrared Window (10.8 \u00b5m) images [click to enlarge]<\/p><\/div>\n

===== 23 August Update =====<\/strong><\/em><\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS Shortwave Infrared (3.74 \u00b5m), Day\/Night Band (0.7 \u00b5m) and 11.45-3.74 \u00b5m brightness temperature difference images [click to enlarge]<\/p><\/div>The Pioneer Fire continued to be very active on 22 August<\/strong><\/a> (exceeding 100,000 acres in total burn coverage since its start on 18 July), sending a large amount of smoke northeastward (OMPS Aerosol Index<\/strong><\/a>). During the following overnight hours, cold air drainage and the development of a boundary layer temperature inversion acted to trap a good deal of smoke in the Payette River valley to the west\/southwest of Stanley KSNT. The active fire hot spots (black to yellow to red pixels)<\/em> were evident on nighttime (1032 UTC or 4:32 AM local time) images (above)<\/strong><\/em> of Suomi NPP VIIRS Shortwave Infrared (3.74 \u00b5m) data, while illumination from the Moon (in the Waning Gibbous phase, at 69% of Full) showed the ribbon of smoke trapped in the valley (note that this signal was not due to fog, since it did not show up in the VIIRS 11.45-3.74 \u00b5m brightness temperature difference or “fog\/stratus product”).<\/p>\n

During the subsequent daytime hours of 23 August<\/strong><\/a>, 1-minute GOES-14 Visible (0.63 \u00b5m) images (below; <\/strong>also available as a large 114 Mbyte animated GIF<\/a>)<\/strong><\/em> showed the gradual ventilation of smoke from the Payette River valley as the temperature inversion eroded and mixing via winds increased.<\/p>\n

\"GOES-14<\/a>

GOES-14 Visible (0.63 um) images, with plots of hourly surface reports [click to play MP4 animation]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

The Pioneer Fire in central Idaho produced another pyroCumulonimbus (pyroCb) cloud on 21 August 2016 (the first was on 19 August). GOES-14 was in SRSO-R mode, and sampled the fire with 1-minute imagery (above; also available as a large 73 Mbyte animated GIF) — a large smoke plume was evident on 0.63 \u00b5m Visible images […]<\/p>\n","protected":false},"author":18,"featured_media":21775,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22,6,40,26,49,48],"tags":[],"class_list":["post-21773","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-avhrr","category-fire-detection","category-goes-14","category-poes","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/21773","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=21773"}],"version-history":[{"count":9,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/21773\/revisions"}],"predecessor-version":[{"id":21785,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/21773\/revisions\/21785"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/21775"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=21773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=21773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=21773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}