{"id":7364,"date":"2011-01-05T23:04:49","date_gmt":"2011-01-05T23:04:49","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=7364"},"modified":"2011-01-25T17:55:22","modified_gmt":"2011-01-25T17:55:22","slug":"tule-fog-in-the-central-valley-of-california","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/7364","title":{"rendered":"Tule fog in the Central Valley of California"},"content":{"rendered":"<p style=\"text-align: center;\">\n<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a class=\"thumbnail\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2011\/01\/110105_g11_vis_ca_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\" \" title=\"GOES-11 0.65 \u00c2\u00b5m visible image (click to play animation)\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2011\/01\/110105_G11_VIS_CA_17.GIF\" alt=\"GOES-11 0.65 \u00c2\u00b5m visible image (click to play animation)\" width=\"480\" height=\"360\" \/><\/a><p class=\"wp-caption-text\">GOES-11 0.65 \u00c2\u00b5m visible image (click to play animation)<\/p><\/div>\n<p>McIDAS images of GOES-11 0.65 \u00c2\u00b5m visible channel data <em><strong>(above)<\/strong><\/em> showed a persistent <a title=\"Tule Fog (Wikipedia)\" href=\"http:\/\/en.wikipedia.org\/wiki\/Tule_fog\"><strong>Tule fog<\/strong><\/a> event across much of the Central Valley of California on <a title=\"05 January 2011 daily weather map\" href=\"http:\/\/www.hpc.ncep.noaa.gov\/dailywxmap\/index_20110105.html\"><strong>05 January 2011<\/strong><\/a>. The northern portion of the fog eventually began to erode into the afternoon hours, but the remainder of the fog feature showed little change. A 1-km resolution MODIS Red\/Green\/Blue (RGB) true color image from the <a title=\"SSEC MODIS Today site\" href=\"http:\/\/ge.ssec.wisc.edu\/modis-today\/index.php?satellite=t1&amp;product=true_color&amp;date=2011_01_05_005&amp;overlay_sector=false&amp;overlay_state=true&amp;overlay_coastline=true\"><strong>SSEC MODIS Today<\/strong><\/a> site <em><strong>(below)<\/strong><\/em> offered another view of the fog. The snow-covered Sierra Nevada Range can be seen to the east of the Central Valley.<\/p>\n<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2011\/01\/110105_modis_truecolor_ca.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"MODIS true color Red\/Green\/Blue (RGB) image (viewed using Google Earth)\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2011\/01\/110105_modis_truecolor_ca.jpg\" alt=\"MODIS true color Red\/Green\/Blue (RGB) image (viewed using Google Earth)\" width=\"480\" height=\"316\" \/><\/a><p class=\"wp-caption-text\">MODIS true color Red\/Green\/Blue (RGB) image (viewed using Google Earth)<\/p><\/div>\n<p>Before the areal extent of the fog could be monitored using daytime visible images, a comparison of AWIPS images of the 1-km resolution <strong><a title=\"MODIS in AWIPS: VISIT training lesson\" href=\"http:\/\/rammb.cira.colostate.edu\/training\/visit\/training_sessions\/modis_products_in_awips\/\">MODIS<\/a><\/strong> fog\/stratus product and the corresponding 4-km resolution GOES-11 fog\/stratus product <em><strong>(below)<\/strong><\/em> demonstrated the clear advantage of improved spatial resolution for detecting the location of the fog edges. In addition, the portions of the fog that were deeper in vertical extent were highlighted with an orange to red color enhancement.<\/p>\n<p style=\"text-align: center;\"><a href=\"..\/wp-content\/uploads\/2011\/01\/110105_g11_vis_ca_anim.gif\"><\/a><\/p>\n<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2011\/01\/110105_modis_goes11_fog_anim.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"     \" title=\"1-km resolution MODIS and 4-km resolution GOES-11 fog\/stratus product images\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2011\/01\/110105_modis_goes11_fog_anim.gif\" alt=\"1-km resolution MODIS and 4-km resolution GOES-11 fog\/stratus product images\" width=\"480\" height=\"459\" \/><\/a><p class=\"wp-caption-text\">1-km resolution MODIS and 4-km resolution GOES-11 fog\/stratus product images<\/p><\/div>\n<p>The MODIS Cloud Top Temperature (CTT) product <em><strong>(below)<\/strong><\/em> depicted CTT values of +1 to +4\u00c2\u00ba C <em>(lighter red color enhancement)<\/em> across the fog feature. Note that the CTT product incorrectly identified the cold, snow-covered Sierra Nevada mountains as cloud, with CTT values between 0 and -25\u00c2\u00ba C <em>(yellow to blue color enhancement)<\/em>.<\/p>\n<div style=\"width: 490px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2011\/01\/MODIS_CTT_20110105_1023.png\"><img loading=\"lazy\" decoding=\"async\" title=\"MODIS Cloud Top Temperature product\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2011\/01\/MODIS_CTT_20110105_1023.png\" alt=\"MODIS Cloud Top Temperature product\" width=\"480\" height=\"459\" \/><\/a><p class=\"wp-caption-text\">MODIS Cloud Top Temperature product<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>McIDAS images of GOES-11 0.65 \u00c2\u00b5m visible channel data (above) showed a persistent Tule fog event across much of the Central Valley of California on 05 January 2011. The northern portion of the fog eventually began to erode into the afternoon hours, but the remainder of the fog feature showed little change. A 1-km resolution [&hellip;]<\/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":[13,18,32,12,45],"tags":[],"class_list":["post-7364","post","type-post","status-publish","format-standard","hentry","category-fog-detection","category-goes-11","category-google-earth","category-modis","category-redgreenblue-rgb-images"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/7364","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=7364"}],"version-history":[{"count":13,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/7364\/revisions"}],"predecessor-version":[{"id":7512,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/7364\/revisions\/7512"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=7364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=7364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=7364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}