{"id":2622,"date":"2018-12-06T16:44:27","date_gmt":"2018-12-06T23:44:27","guid":{"rendered":"http:\/\/rammb.cira.colostate.edu\/training\/visit\/blog\/?p=2622"},"modified":"2026-03-06T09:06:26","modified_gmt":"2026-03-06T16:06:26","slug":"dnb-and-satellite-identification","status":"publish","type":"post","link":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/2018\/12\/06\/dnb-and-satellite-identification\/","title":{"rendered":"DNB and satellite identification"},"content":{"rendered":"

Day\/Night Band (DNB)<\/a>\u00a0is apart of 22 spectral channels on the VIIRS<\/a> instrument, in which VIIRS is on-board S-NPP and NOAA-20 satellites<\/a>. DNB can assist users in monitoring atmospheric and surface features via emitted and reflected light sources, during the nighttime. Features identified by DNB (but not limited to), span from observing cloud cover, snow cover, lightning, auroras, sea ice, ship lights, fires, gas flares, lights from volcanoes and city\/town lights. But what DNB can also observe are other low-earth orbiting satellites placed lower in altitude than S-NPP and NOAA-20.<\/p>\n

Two prime examples are seen in the DNB imagery below. Images are taken on 4 December 2018 @ ~15Z, and 5 December 2018 @ ~10Z and\u00a0are courtesy of RAMMB Slider<\/a>.<\/p>\n

Low-earth orbiting satellites observed by DNB exhibit a ‘line of bright dots’ that are sequentially produced in a direction via VIIRS’ scan lines. The dots have bright signatures via sunlight reflecting off the satellite, that DNB observes. Notice in the two examples below that emitted city lights of Alert, Nunavut, Canada<\/a> can be seen, along with sea ice (i.e. located along the coast of Canada and Greenland) and an aurora.<\/p>\n

DNB –> 4 December 2018, @ ~15Z<\/strong><\/p>\n

\"\"<\/p>\n

DNB –> 5 December 2018, @ ~10Z<\/strong><\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Day\/Night Band (DNB)\u00a0is apart of 22 spectral channels on the VIIRS instrument, in which VIIRS is on-board S-NPP and NOAA-20 satellites. DNB can assist users in monitoring atmospheric and surface features via emitted and reflected light sources, during the nighttime. Features identified by DNB (but not limited to), span from observing cloud cover, snow cover, Continue Reading<\/a><\/p>\n","protected":false},"author":23,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,54],"tags":[],"class_list":["post-2622","post","type-post","status-publish","format-standard","hentry","category-miscellaneous","category-polar-orbiting-satellites"],"_links":{"self":[{"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/posts\/2622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/comments?post=2622"}],"version-history":[{"count":1,"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/posts\/2622\/revisions"}],"predecessor-version":[{"id":6048,"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/posts\/2622\/revisions\/6048"}],"wp:attachment":[{"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/media?parent=2622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/categories?post=2622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rammb2.cira.colostate.edu\/visit-blog\/wp-json\/wp\/v2\/tags?post=2622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}