{"id":42657,"date":"2021-09-30T14:30:23","date_gmt":"2021-09-30T14:30:23","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=42657"},"modified":"2021-09-30T21:22:26","modified_gmt":"2021-09-30T21:22:26","slug":"goes-17-level-2-products-are-flowing-over-the-sbn","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/42657","title":{"rendered":"GOES-17 Level 2 Products are flowing over the SBN"},"content":{"rendered":"\n
\"\"<\/a>
GOES-17 Shortwave Infrared imagery (3.9 \u00b5m), GOES-17 Fire Power and GOES-16 Fire Power, 1406 UTC, 30 September 2021 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n

As of 1400 UTC on 30 September, GOES-17 Level 2 products are flowing into National Weather Service forecast offices via the Satellite Broadcast Network (SBN). An example of the improvement of GOES-17 v. GOES-16 is shown in the toggle above that samples the KNP Complex fire<\/a> in Tulare County California (click here<\/a> for a toggle that is not so zoomed in!). The GOES-17 shortwave IR shows warm pixels associated with the fire; GOES-17 Fire Power aligns with the GOES-17 pixels, and show much larger values (approximately 3x greater) than the GOES-16 products from the same time. <\/p>\n\n\n\n

A further utility of Level 2 products is shown below<\/strong>, from 29 September. The Day Cloud Phase Distinction RGB includes ABI Band 5, the 1.61 ‘snow-ice’ band that indicates glaciation by a change in reflectance at that band. Thus, the color of the RGB can change where ice crystals are present. There is a Level 2 product, however, that computes what the phase most likely is, and that is shown in a toggle at 1951 UTC below. Visual inspection of an RGB may not be enough to ascertain cloud type, particularly on this day for the clouds off the coast of Oregon. A good practice is to load the Level 2 product underneath the image so that sampling can give a quantitative estimate, as shown at bottom.<\/p>\n\n\n\n

\"\"<\/a>
Day Cloud Phase Distinction, 1731 – 1956 UTC on 29 September 2021 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
Toggle between the GOES-17 Day Cloud Phase Distinction RGB and the level 2 Cloud Phase product, 1951 UTC on 29 September 2021 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n
\"\"<\/a>
GOES-17 Day Cloud Phase Distinction RGB with Cloud Phase beneath, sampled (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n

Available GOES-17 Level 2 Products<\/a> include: Aerosol Detection and Aerosol Optical Depth<\/a>, Rain Rate<\/a>\/Quantitative Precipitation Estimates (original algorithm), Clear Sky Mask<\/a>, Fire Detection and Characterization (that is, Fire <\/a>Hotspots), Land<\/a> (and Sea<\/a>) Surface Temperature, Derived Stability Indices<\/a>, Total Precipitable Water<\/a>, Derived Motion Wind Vectors<\/a>, Cloud Particle Size Distribution<\/a>, Cloud Top Pressure<\/a>, Cloud Top Phase<\/a>, Cloud Top Temperature<\/a> and Cloud Optical Depth<\/a>. The animation below (imagery courtesy Lee Byerle from TOWR-S) steps through the various Level 2 products at\/around 1800 UTC on 30 September. Another version that loops through many GOES-17 Level 2 products<\/a>. A visible band is included for reference. <\/p>\n\n\n\n

\"\"<\/a>
GOES-17 Level 2 Products (and a 0.64 \u00b5m Band 2 visible image) at 1801 UTC on 30 September 2021 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n

Special Note<\/strong>: Users of GOES-17 Level 2 Products must remember that, depending on the time and day, Level 2 Products may be affected by degraded ABI band quality, an issue related to the GOES-17 Loop Heat Pipe that is not performing up to spec. For more information on the Loop Heat Pipe and it effect on GOES-17 imagery, visit this site<\/a> and this site<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

As of 1400 UTC on 30 September, GOES-17 Level 2 products are flowing into National Weather Service forecast offices via the Satellite Broadcast Network (SBN). An example of the improvement of GOES-17 v. GOES-16 is shown in the toggle above that samples the KNP Complex fire in Tulare County California (click here for a toggle […]<\/p>\n","protected":false},"author":19,"featured_media":42668,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[80],"tags":[],"class_list":["post-42657","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-17"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/42657","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=42657"}],"version-history":[{"count":18,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/42657\/revisions"}],"predecessor-version":[{"id":42699,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/42657\/revisions\/42699"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/42668"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=42657"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=42657"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=42657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}