{"id":54152,"date":"2023-08-25T04:17:00","date_gmt":"2023-08-25T04:17:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=54152"},"modified":"2023-08-28T15:43:16","modified_gmt":"2023-08-28T15:43:16","slug":"views-of-tropical-cyclone-damrey-from-the-guam-direct-broadcast-site","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/54152","title":{"rendered":"Views of Tropical Storm Damrey from the Guam Direct Broadcast site"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/08\/noaa20_atms_88v_atms_rainrate_viirs_m15_20230825_030031_08w_damrey_toggle.gif\" alt=\"\" class=\"wp-image-54153\"\/><\/figure>\n\n\n\n<p>Direct Broadcast antennae give timely full-resolution imagery from various Low-Earth-Orbit satellites as they move within the view of the satellite received.  <a href=\"https:\/\/cimss.ssec.wisc.edu\/cspp\/\">Community Satellite Processing Package (CSPP)<\/a> software takes the downloaded signal and produces imagery (or AWIPS-ready files).  The toggle above shows VIIRS (Visible-Infrared Imaging Scanning Radiometer) and ATMS (Advanced Technology Microwave Sounder) data from NOAA-20 from a Guam overpass near 0300 on 25 August 2023.  A benefit of having visible\/infrared and microwave instruments on the same orbiting platform is that it&#8217;s easier to compare (directly) features in the two images.  In this case, note how the brightest (whitest) features in <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/08\/noaa20_viirs_m15_20230825_030031_08w_damrey.png\">VIIRS channel M15 (10.8 \u00b5m)<\/a> are very cold in <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/08\/n20_atms_btemp_88v_20230825_030202_08w_damrey.png\">the 88 GHz<\/a>, and have <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/08\/n20_atms_rain_rate_20230825_030202_08w_damrey.png\">large rain-rates<\/a>.<\/p>\n\n\n\n<p>Data from direct broadcast also allows a user to compare microwave data from two different satellites.  NOAA-20 and GCOM-W1 both carry microwave sounders (the Advanced Microwave Scanning Radiometer &#8212; ASMR-2 &#8212; in GCOM-W1) that sense energy at similar frequencies.  The toggle below compares ATMS data at <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/08\/n20_atms_btemp_88v_20230825_030202_08w_damrey.png\">88 GHz<\/a> and <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/08\/gcom-w1_amsr2_btemp_89.0bv_20230825_031500_08w_damrey.png\">AMSR-2 data at 89.2 GHz<\/a> from about the same time.  Note the significantly better resolution from AMSR-2!<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/08\/n20_atms_88v_gcomw1_amsr2_btemp_89.0bv_20230825_031500_08w_damrey_toggle.gif\" alt=\"\" class=\"wp-image-54161\"\/><figcaption class=\"wp-element-caption\">ATMS 88 GHz imagery, 0302 UTC on 25 August, and AMSR-2 89.2 GHz imagery, 0315 UTC on 25 August 2023 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Thanks to Doug Schumacher, SSEC\/CIMSS, for supplying these images!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Direct Broadcast antennae give timely full-resolution imagery from various Low-Earth-Orbit satellites as they move within the view of the satellite received. Community Satellite Processing Package (CSPP) software takes the downloaded signal and produces imagery (or AWIPS-ready files). The toggle above shows VIIRS (Visible-Infrared Imaging Scanning Radiometer) and ATMS (Advanced Technology Microwave Sounder) data from NOAA-20 [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":54162,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[89,81,78,48],"tags":[],"class_list":["post-54152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-atms","category-gcom-w1","category-noaa-20","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/54152","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=54152"}],"version-history":[{"count":6,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/54152\/revisions"}],"predecessor-version":[{"id":54169,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/54152\/revisions\/54169"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/54162"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=54152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=54152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=54152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}