{"id":4823,"date":"2010-03-18T23:16:17","date_gmt":"2010-03-18T23:16:17","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=4823"},"modified":"2010-03-19T21:34:56","modified_gmt":"2010-03-19T21:34:56","slug":"fires-in-oklahoma-and-arkansas","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/4823","title":{"rendered":"Fires in Oklahoma and Arkansas"},"content":{"rendered":"
\"GOES-13<\/a>

GOES-13 (top) and GOES-12 (bottom) visible images<\/p><\/div>\n

McIDAS images comparing 1-km resolution GOES-12 and GOES-13 0.65 \u00c2\u00b5m visible channel data (above)<\/em><\/strong> revealed several smoke plumes over parts of eastern Oklahoma and western Arkansas, while the corresponding 4-km resolution GOES-12 and GOES-13 3.9 \u00c2\u00b5m shortwave IR images (below)<\/em><\/strong> showed numerous “hot spots” (black to yellow to red pixels)<\/em> due to widespread fire activity that had flared up across that region on 18 March 2010<\/a><\/strong>. Even though there were a number of smoke plumes seen in eastern Oklahoma, the most obvious smoke plumes (in term of size and brightness on the visible imagery) were apparent in northwestern Arkansas.<\/p>\n

\"GOES-13<\/a>

GOES-13 (top) and GOES-12 (bottom) 3.9 \u00c2\u00b5m shortwave IR images<\/p><\/div>\n

.<\/p>\n

\"MODIS<\/a>

MODIS visible and 3.7 \u00c2\u00b5m shortwave IR images<\/p><\/div>\n

AWIPS comparisons of the 1-km resolution MODIS visible and 3.7 \u00c2\u00b5m shortwave IR images at 19:31 UTC (above)<\/em><\/strong> and the 1-km resolution AVHRR visible and 3.7 \u00c2\u00b5m shortwave IR images several hours later at 23:43 UTC (below)<\/em><\/strong> showed that many more fire hot spots could be detected with the use of higher spatial resolution shortwave IR images (GOES vs MODIS at 19:31 UTC<\/a><\/strong> | GOES vs AVHRR at 23:43 UTC<\/a><\/strong>). The spatial resolution of the shortwave IR channels on the ABI instrument<\/a><\/strong> of GOES-R<\/a><\/strong> satellite will be 2 km, which will be an improvement over the 4 km resolution on the current GOES satellites.<\/p>\n

\"AVHRR<\/a>

AVHRR visible and 3.7 \u00c2\u00b5m shortwave IR images<\/p><\/div>\n

A closer view over northwestern Arkansas using the AVHRR visible channel, Cloud Type Product, Cloud Top Temperature, and Cloud Particle Effective Radius products at 22:03 UTC (below)<\/em><\/strong> showed the following: (1) the 3 large smoke plumes over northwestern Arkansas as well as the smaller cumulus clouds off the the east were composed primarily of water droplets (cyan color enhancement);<\/em> (2) the Cloud Top Temperature values of the large smoke plumes were quite warm (+10 to +12\u00c2\u00ba C, gray color enhancement),<\/em> while some of the smaller cumulus clouds off to the east were beginning to exhibit CTT values several degrees below freezing (red to orange color enhancement);<\/em> (3) the Cloud Particle Effective Radius values in the smoke plumes were significantly larger (30-40 \u00c2\u00b5m, darker blue color enhancement)<\/em> than those of the cumulus clouds off to the east (15-20 \u00c2\u00b5m, cyan color enhancement)<\/em>.<\/p>\n

\"AVHRR<\/a>

AVHRR visible, Cloud Type, Cloud Top Temperature, and Cloud Particle Effective Radius<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

McIDAS images comparing 1-km resolution GOES-12 and GOES-13 0.65 \u00c2\u00b5m visible channel data (above) revealed several smoke plumes over parts of eastern Oklahoma and western Arkansas, while the corresponding 4-km resolution GOES-12 and GOES-13 3.9 \u00c2\u00b5m shortwave IR images (below) showed numerous “hot spots” (black to yellow to red pixels) due to widespread fire activity […]<\/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":[22,6,19,11,34,12,26],"tags":[],"class_list":["post-4823","post","type-post","status-publish","format-standard","hentry","category-avhrr","category-fire-detection","category-goes-12","category-goes-13","category-goes-r","category-modis","category-poes"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/4823","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=4823"}],"version-history":[{"count":12,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/4823\/revisions"}],"predecessor-version":[{"id":4826,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/4823\/revisions\/4826"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=4823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=4823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=4823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}