{"id":23171,"date":"2017-03-01T23:30:41","date_gmt":"2017-03-01T23:30:41","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=23171"},"modified":"2017-03-02T15:13:29","modified_gmt":"2017-03-02T15:13:29","slug":"the-goes-16-abi-veggie-channel-at-0-86-%c2%b5m","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/23171","title":{"rendered":"The GOES-16 ABI Veggie channel at 0.86 \u00b5m"},"content":{"rendered":"
<\/a>

GOES-16 Red Visible (0.64 \u00b5m) and Veggie (0.86 \u00b5m) bands over Florida, 21:11 UTC on 01 March 2017 (Click to enlarge)<\/strong><\/p><\/div>\n

Note: GOES-16 data shown on this page are preliminary, non-operational data and are undergoing on-orbit testing.<\/p>\n

The ABI Band at 0.86 \u00b5m (Fact Sheet<\/a>) allows superior land\/sea discrimination. This occurs because land is more reflective to radiation at 0.86 \u00b5m than to radiation at 0.64 \u00b5m. The toggle above shows Florida in the standard visible (0.64 \u00b5m)<\/a> and at 0.86 \u00b5m<\/a>. Coastal boundaries and islands (such as the Keys and the Bahamas) are far more distinct in the near-infrared so-called ‘veggie’ channel at 0.86 \u00b5m. Inland lakes are also better defined with the 0.86 \u00b5m channel. Because the land is so bright, land\/cloud contrast is reduced in the 0.86 \u00b5m imagery, so clouds over land appear more distinct in the 0.64 \u00b5m imagery.<\/p>\n

The toggle below shows a similar scene over the Tidewater region of southeast Virginia and points to the south.\u00a0 Again, inland lakes and rivers and the coastal boundary is more apparent in the 0.86 \u00b5m<\/a> imagery than in the 0.64 \u00b5m<\/a> imagery.<\/p>\n

<\/a>

GOES-16 Red Visible (0.64 \u00b5m) and Veggie (0.86 \u00b5m) bands over the mid-Atlantic States, 20:01 UTC on 01 March 2017 (Click to enlarge)<\/strong><\/p><\/div>\n

Use the 0.86 \u00b5m band when land\/water distinction is important!<\/p>\n

Because ABI does not have a spectral band in the ‘green’ part of the electromagnetic spectrum (Band 1 at 0.47 \u00b5m is in the blue, Band 2 at 0.64 \u00b5m is in the red), information from the 0.86 \u00b5m band is used in construction of simulated ‘true color’ imagery (as discussed here<\/a>).<\/p>\n

In addition, the 0.86 \u00b5m channel provides useful burn scar information in ‘False Color’ imagery<\/a> (that combines 2.2 \u00b5m, 0.86 \u00b5m and 0.64 \u00b5m imagery) because burn scars appear dark in 0.86 \u00b5m imagery.<\/p>\n","protected":false},"excerpt":{"rendered":"

Note: GOES-16 data shown on this page are preliminary, non-operational data and are undergoing on-orbit testing. The ABI Band at 0.86 \u00b5m (Fact Sheet) allows superior land\/sea discrimination. This occurs because land is more reflective to radiation at 0.86 \u00b5m than to radiation at 0.64 \u00b5m. The toggle above shows Florida in the standard visible […]<\/p>\n","protected":false},"author":19,"featured_media":23176,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10,74],"tags":[],"class_list":["post-23171","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general-interpretation","category-goes-16"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/23171","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=23171"}],"version-history":[{"count":10,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/23171\/revisions"}],"predecessor-version":[{"id":23192,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/23171\/revisions\/23192"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/23176"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=23171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=23171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=23171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}