{"id":12149,"date":"2013-01-17T23:33:48","date_gmt":"2013-01-17T23:33:48","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=12149"},"modified":"2013-01-26T18:09:54","modified_gmt":"2013-01-26T18:09:54","slug":"baroclinic-leaf-and-conveyor-belt-satellite-signatures","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/12149","title":{"rendered":"Baroclinic leaf and conveyor belt satellite signatures"},"content":{"rendered":"
\"MODIS<\/a>

MODIS 0.65 \u00c2\u00b5m visible channel, 11.0 \u00c2\u00b5m IR channel, and 6.7 \u00c2\u00b5m water vapor channel images<\/p><\/div>\n

A comparison of AWIPS images of 1-km resolution MODIS 0.65 \u00c2\u00b5m visible, 11.0 \u00c2\u00b5m IR, and 6.7 \u00c2\u00b5m water vapor channel data (above)<\/strong><\/em> showed a textbook example of a “baroclinic leaf” satellite signature associated with the large storm affecting much of the eastern US on 17 January 2013<\/strong><\/a>. The baroclinic leaf represents a region of ascending air that originates at low levels on the warm side of the primary surface cold front (18 UTC surface analysis<\/strong><\/a>).<\/p>\n

4-km resolution GOES-13 6.5 \u00c2\u00b5m water vapor channel images (below; click image to play animation)<\/strong><\/em> showed the development several important satellite signatures: (1)<\/strong> the baroclinic leaf; (2)<\/strong> the primary warm conveyor belt;, (3)<\/strong> the cold conveyor belt (which was helping to produce snow across parts of northern Mississippi and Alabama); and (4)<\/strong> a secondary warm conveyor belt after about 19 UTC. For additional information on conveyor belts, see this blog post from January 2011<\/strong><\/a>.<\/p>\n

\"GOES-13<\/a>

GOES-13 6.5 \u00c2\u00b5m water vapor channel images (click image to play animation)<\/p><\/div>\n

A McIDAS-V<\/strong><\/a> representation of the GOES-13 (GOES-East)<\/em> water vapor image brightness temperatures as a topographical surface (below; click image to play animation; also available as a QuickTime movie<\/a>)<\/strong><\/em> helps to visualize the descending intrusion of dry air (which exhibited warm brightness temperatures, yellow to orange color enhancement)<\/em> and the ascending streams of moist air (which exhibited blue to white to green colors)<\/em>\u00c2\u00a0 within the warm conveyor belt and baroclinic leaf structures.<\/p>\n

\"GOES-13<\/a>

GOES-13 6.5 \u00c2\u00b5m water vapor images (click image to play animation)<\/p><\/div>\n

Another McIDAS-V visualization (below; click image to play animation)<\/em><\/strong> shows the 3-dimensional structure of the various jet streams (cyan isosurface of 50 meters per second or higher winds)<\/em> and the increasing values and ascending height of moisture (mixing ratio)<\/em> within the primary warm conveyor belt as the cross section slice is moved from south to north. McIDAS-V images courtesy of Joleen Feltz and Mike Hiley (CIMSS).<\/p>\n

\"GOES-13<\/a>

GOES-13 water vapor image with Rapid Refresh model fields of wind speed and mixing ratio (click image to play animation)<\/p><\/div>\n

Early in the day, a SIGMET was issued (below)<\/strong><\/em> to outline an area of risk for severe turbulence due to wind shear near the axis of the strong jet stream associated with this developing system.<\/p>\n

\"GOES-13<\/a>

GOES-13 6.5 \u00c2\u00b5m water vapor image with outline of Turbulence SIGMET and Pilot reports of turbulence<\/p><\/div>\n

===== 18 January Update =====<\/strong><\/p>\n

A comparison of AWIPS images of Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel and the corresponding VIIRS false-color Red\/Green\/Blue (RGB) image (below)<\/strong><\/em> aided in the discrimination of the resulting snow cover from the storm (shades of red)<\/em> versus clouds (shades of white)<\/em>.<\/p>\n

\"Suomi<\/a>

Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel and False-color Red\/Green\/Blue (RGB) images<\/p><\/div>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

A comparison of AWIPS images of 1-km resolution MODIS 0.65 \u00c2\u00b5m visible, 11.0 \u00c2\u00b5m IR, and 6.7 \u00c2\u00b5m water vapor channel data (above) showed a textbook example of a “baroclinic leaf” satellite signature associated with the large storm affecting much of the eastern US on 17 January 2013. The baroclinic leaf represents a region of […]<\/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":[21,10,11,51,12,45,49,48,5],"tags":[],"class_list":["post-12149","post","type-post","status-publish","format-standard","hentry","category-aviation","category-general-interpretation","category-goes-13","category-mcidas-v","category-modis","category-redgreenblue-rgb-images","category-suomi_npp","category-viirs","category-winter-weather"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/12149","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=12149"}],"version-history":[{"count":15,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/12149\/revisions"}],"predecessor-version":[{"id":12151,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/12149\/revisions\/12151"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=12149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=12149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=12149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}