{"id":264,"date":"2006-11-22T18:51:38","date_gmt":"2006-11-22T18:51:38","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/2006\/11\/22\/mountain-waves-goes-11-versus-goes-13-water-vapor-channel\/"},"modified":"2006-11-28T19:10:50","modified_gmt":"2006-11-28T19:10:50","slug":"mountain-waves-goes-11-versus-goes-13-water-vapor-channel","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/264","title":{"rendered":"Mountain waves: GOES-11 versus GOES-13 water vapor channel"},"content":{"rendered":"<p><a title=\"GOES-11\/GOES-13 water vapor image\" target=\"_blank\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/11\/061122_g11_g13_wv_22.GIF\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"360\" align=\"middle\" alt=\"GOES-11\/GOES-13 water vapor image\" id=\"image260\" title=\"GOES-11\/GOES-13 water vapor image\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/11\/061122_g11_g13_wv_22.GIF\" \/><\/a><br \/>\nAn extensive area of mountain waves was apparent on the &#8220;water vapor channel&#8221; images from GOES-11 and GOES-13 on <a target=\"_blank\" title=\"22 November 2006 daily weather map\" href=\"http:\/\/www.hpc.ncep.noaa.gov\/dailywxmap\/index_20061122.html\"><strong>22 November 2006<\/strong><\/a> <em><strong>(above)<\/strong><\/em>. Animation of these  images (<a target=\"_blank\" title=\"QuickTime animation\" href=\"http:\/\/cimss.ssec.wisc.edu\/goes\/misc\/blog\/061122_g11_g13_wv.mov\"><strong>QuickTime<\/strong><\/a> | <a title=\"Java animation\" target=\"_blank\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/11\/061122_g11_g13_wv_anim.html\"><strong>Java<\/strong><\/a>) shows that the mountain waves were present for several hours across a good deal of the Northwest US, becoming well-defined over Wyoming after about 10:00 UTC. Due to the relatively dry air mass that was present over that region, the <a target=\"_blank\" title=\"GOES-11 water vapor weighting function\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/11\/061122_12_slc_g11wvwf.jpg\"><strong>GOES-11 water vapor channel weighing function<\/strong><\/a> was peaking at a fairly low altitude (around 600 hPa, or about 3 km above ground level). The improvement in   spatial resolution of the water vapor channel (from <strong>8km<\/strong> on  GOES-11 to <strong>4 km<\/strong> on GOES-13) allows such mountain wave features to be detected with better clarity; in addition, the <strong>6.5\u00c2\u00b5m<\/strong> water vapor channel on GOES-13 is <em>spectrally<\/em> <em>wider<\/em> than the <strong>6.7\u00c2\u00b5m<\/strong> water vapor channel on GOES-11, which accounts for some of the improved mountain wave detection capability. This improved 4 km resolution water vapor channel is also available on GOES-12.<br \/>\n.<\/p>\n<p>Wind speed isotachs at the 500 hPa level <em><strong>(below)<\/strong><\/em> indicated that strong winds associated with a passing jet stream axis were responsible for generating these mountain waves (also note the corresponding gradient in GOES Sounder total column ozone, poleward of the axis of strongest winds). This mountain wave signature on water vapor channel imagery is an indicator of turbulence potential; while there were no pilot reports of turbulence during that 05-14 UTC time period, the <a target=\"_blank\" title=\"Graphical Turbulence Guidance product\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/11\/061122_adds_gtg.jpg\"><strong>Graphical Turbulence Guidance<\/strong><\/a> product did indicate a Moderate to Severe potential for turbulence across the region (over Wyoming in particular).<br \/>\n<a title=\"AWIPS GOES sounder ozone, GOES imager water vapor\" target=\"_blank\" href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/11\/061122_12_wv_ozone.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"479\" height=\"233\" align=\"middle\" alt=\"AWIPS GOES sounder ozone, GOES imager water vapor\" id=\"image262\" title=\"AWIPS GOES sounder ozone, GOES imager water vapor\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2006\/11\/061122_12_wv_ozone.jpg\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>An extensive area of mountain waves was apparent on the &#8220;water vapor channel&#8221; images from GOES-11 and GOES-13 on 22 November 2006 (above). Animation of these images (QuickTime | Java) shows that the mountain waves were present for several hours across a good deal of the Northwest US, becoming well-defined over Wyoming after about 10:00 [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21,18,11],"tags":[],"class_list":["post-264","post","type-post","status-publish","format-standard","hentry","category-aviation","category-goes-11","category-goes-13"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/264","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=264"}],"version-history":[{"count":0,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/264\/revisions"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}