{"id":59157,"date":"2024-05-13T04:55:00","date_gmt":"2024-05-13T04:55:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=59157"},"modified":"2024-05-13T16:17:06","modified_gmt":"2024-05-13T16:17:06","slug":"noaa-20-and-noaa-21-nucaps-profiles-provide-gap-free-coverage","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/59157","title":{"rendered":"NOAA-20 and NOAA-21 NUCAPS profiles provide gap-free coverage"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1246\" height=\"969\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GriddedNUCAPS_KIndex_NOAA_2024_0512_2252_to_0513_0222step.gif\" alt=\"\" class=\"wp-image-59158\"\/><figcaption class=\"wp-element-caption\">NOAA-20\/NOAA-21 NUCAPS profile estimates of K-Index (individual swaths) over the South Pacific, 2250 UTC 12 May 2024 &#8211; 0210 UTC 13 May 2024 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>The long-anticipated arrival of NOAA-21 NUCAPS profiles (to supplement NOAA-20!) to AWIPS means that data void regions such as the South Pacific Ocean now have complete twice-daily coverage, as shown by the inidividual profiles above, and the overlapping profiles below.  This means that a twice-daily mappings of accurate satellite sounder-provided thermodynamic variables are available!  The K-Index fields shown here are highlighted because of their known <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/48755\">relationship to the Galvex-Davison Index<\/a>.  Thus, the basin-wide fields can be compared to model output to assess where the model is or is not in accord with reality.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1246\" height=\"969\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GriddedNUCAPS_KIndex_NOAA_2024_0512_2252_to_0513_0222stepb.gif\" alt=\"\" class=\"wp-image-59159\"\/><figcaption class=\"wp-element-caption\">NOAA-20\/NOAA-21 NUCAPS profile estimates of K-Index (accumulated swaths) over the South Pacific, 2250 UTC 12 May 2024 &#8211; 0210 UTC 13 May 2024 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>The stepped animation below shows the GDI forecast bracketing the observations of K-Index shown above, from the GFS initialized at 1800 UTC 12 May 2024.  (<a href=\"https:\/\/www.wpc.ncep.noaa.gov\/international\/gdi\/\">Source<\/a>).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GDI_SPAC_03_06_09hFcst_Valid21z_to_03z_12_13May2024step.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"730\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GDI_SPAC_03_06_09hFcst_Valid21z_to_03z_12_13May2024step.gif\" alt=\"\" class=\"wp-image-59160\"\/><\/a><figcaption class=\"wp-element-caption\">GDI forecast over the South Pacific from the GFS initialized at 1800 UTC on 12 May 2024.  03-, 06-, and 09-h forecasts are shown (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>GOES-18 imagery compares favorable to the K-Index fields, as shown in the true-color imagery below (taken from the <a href=\"https:\/\/geosphere.ssec.wisc.edu\/#playing:true;coordinate:-2951508,-1583762;zoom:4;satellite:goeswest;product:%5B%7B%22n%22:%22true_color_night%22,%22a%22:1%7D%5D;map_grid:on;num_frames:33;start_time:2024-05-12T22:00:00Z;timeframe:Start%20Time;\">CSPP Geosphere site<\/a>).<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"742\" style=\"aspect-ratio: 1342 \/ 742;\" width=\"1342\" controls src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/goeswest_abi_radf_true_color_night_s20240512220022_e20240513024022_f29.mp4\"><\/video><figcaption class=\"wp-element-caption\">GOES-18 True Color Imagery over the South Pacific starting 2201 UTC on 12 May 2024 <\/figcaption><\/figure>\n\n\n\n<p>NUCAPS profiles are also available from MetopC, and that satellite gives excellent (but not complete) coverage about three hours before the NOAA-20\/NOAA-21 overpasses.  MetopC estimates of K-Index are shown below, for two passes spanning 2006 to 2153 UTC on 12 May 2024.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"796\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GriddedNUCAPS_Kindex_20240512_MetopC_200557_to_215357-1024x796.png\" alt=\"\" class=\"wp-image-59163\" srcset=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GriddedNUCAPS_Kindex_20240512_MetopC_200557_to_215357-1024x796.png 1024w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GriddedNUCAPS_Kindex_20240512_MetopC_200557_to_215357-300x233.png 300w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GriddedNUCAPS_Kindex_20240512_MetopC_200557_to_215357-768x597.png 768w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2024\/05\/GriddedNUCAPS_Kindex_20240512_MetopC_200557_to_215357.png 1246w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">MetopC NUCAPS estimates of K Index over the South Pacific, 2006 &#8211; 2153 UTC on 12 May 2024 (click to enlarge)<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The long-anticipated arrival of NOAA-21 NUCAPS profiles (to supplement NOAA-20!) to AWIPS means that data void regions such as the South Pacific Ocean now have complete twice-daily coverage, as shown by the inidividual profiles above, and the overlapping profiles below. This means that a twice-daily mappings of accurate satellite sounder-provided thermodynamic variables are available! The [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":59159,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[114,58,78,131,83],"tags":[],"class_list":["post-59157","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-18","category-metop","category-noaa-20","category-noaa-21","category-nucaps"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/59157","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\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=59157"}],"version-history":[{"count":2,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/59157\/revisions"}],"predecessor-version":[{"id":59164,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/59157\/revisions\/59164"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/59159"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=59157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=59157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=59157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}