{"id":53022,"date":"2023-06-21T18:40:14","date_gmt":"2023-06-21T18:40:14","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=53022"},"modified":"2023-06-21T19:39:02","modified_gmt":"2023-06-21T19:39:02","slug":"how-fast-can-you-create-jpss-imagery-from-data-on-the-amazon-cloud-using-polar2grid","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/53022","title":{"rendered":"How fast can you create JPSS imagery from data on the Amazon Cloud using Polar2Grid?"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large is-resized\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_wgs84_fit.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_wgs84_fit-1024x1015.png\" alt=\"\" class=\"wp-image-53023\" width=\"1024\" height=\"1015\" srcset=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_wgs84_fit-1024x1015.png 1024w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_wgs84_fit-300x297.png 300w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_wgs84_fit-150x150.png 150w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_wgs84_fit-768x761.png 768w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_wgs84_fit-1536x1523.png 1536w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_wgs84_fit-2048x2031.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">VIIRS I01 visible imagery (0.64 \u00b5m) over Tropical Storm Bret, 1655-1705 UTC on 21 June 2023 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>Orbits from NOAA-20 (<a href=\"https:\/\/www.ssec.wisc.edu\/datacenter\/polar_orbit_tracks\/data\/JPSS-1\/2023\/2023_06_21_172\/GOESEAST.gif\">link<\/a>, from <a href=\"https:\/\/www.ssec.wisc.edu\/datacenter\/polar_orbit_tracks\/\">this site<\/a>) show a NOAA-20 overpass over Tropical Storm Bret at around 1700 UTC on 21 June 2023.  Data from NOAA-20 were available <a href=\"https:\/\/noaa-nesdis-n20-pds.s3.amazonaws.com\/index.html\">at this site<\/a> by 1730 UTC, and downloading files from the VIIRS-I1-SDR and VIIRS-IMG-GEO directories (as discussed in <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/52173\">this blog post<\/a>), and running a simple Polar2Grid (software downloadable <a href=\"https:\/\/cimss.ssec.wisc.edu\/cspp\/polar2grid_v3.0.shtml\">here<\/a>) command yields the full-resolution image above.  For ascending (daytime!) passes, then, this could be done within 45 minutes.  This particular image was posted on the blog by about 1840 UTC.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Of course, you might not want all the imagery outside the Tropical Cyclone!  Polar2Grid allows for simple definitions of grids (via the <code>p2g_grid_helper shell script: .\/p2g_grid_helper.sh <em>GridName<\/em> -52.0 13.0 375 -375 1440 1440 > $POLAR2GRID_HOME\/<em>FileName<\/em>.yaml<\/code>).  An I01 visible image (0.64 \u00b5m) centered near Bret with the defined grid in the command above is shown below.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_Bret21June.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_Bret21June-1024x1024.png\" alt=\"\" class=\"wp-image-53027\" srcset=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_Bret21June-1024x1024.png 1024w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_Bret21June-300x300.png 300w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_Bret21June-150x150.png 150w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_Bret21June-768x768.png 768w, https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/06\/noaa20_viirs_i01_20230621_165500_Bret21June.png 1440w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">VIIRS I01 visible imagery (0.64 \u00b5m) over Tropical Storm Bret, ca. 1700 UTC on 21 June 2023 (Click to enlarge)<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Orbits from NOAA-20 (link, from this site) show a NOAA-20 overpass over Tropical Storm Bret at around 1700 UTC on 21 June 2023. Data from NOAA-20 were available at this site by 1730 UTC, and downloading files from the VIIRS-I1-SDR and VIIRS-IMG-GEO directories (as discussed in this blog post), and running a simple Polar2Grid (software [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":53027,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[78,109,2,48],"tags":[],"class_list":["post-53022","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noaa-20","category-software","category-tropical-cyclones","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/53022","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=53022"}],"version-history":[{"count":5,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/53022\/revisions"}],"predecessor-version":[{"id":53029,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/53022\/revisions\/53029"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/53027"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=53022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=53022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=53022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}