{"id":582,"date":"2007-12-05T20:19:04","date_gmt":"2007-12-05T20:19:04","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/582"},"modified":"2007-12-18T19:01:28","modified_gmt":"2007-12-18T19:01:28","slug":"goes-10-replaces-goes-12","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/582","title":{"rendered":"GOES-10 replaces GOES-12"},"content":{"rendered":"

On 04 December 2007<\/strong>, GOES-12 (the operational GOES-East satellite at 75\u00c2\u00ba W longitude)<\/em> experienced an anomaly in spacecraft attitude following a North-South station keeping maneuver; initial efforts to restore GOES-12 to a normal on-orbit mode were unsuccessful. As a result, GOES-10<\/strong><\/a> (at 60\u00c2\u00ba W longitude)<\/em> was reassigned from South American operations to replace GOES-12 as the operational GOES East satellite on the following day (05 December<\/strong>). \u00e2\u20ac\u00a2\u00e2\u20ac\u00a2 For the latest information on GOES operations and status, refer to the<\/strong> Satellite Services Division GOES Special Bulletins<\/strong><\/a> site. <\/strong><\/p>\n

Due to the age of GOES-10 (which was launched in 1997),<\/em> increasing satellite inclination (currently more than 2 degrees) was causing more “wobble” to be noted in image animations — as a result, the GOES-10 imager “eXtended GOes High Inclination” (XGOHI<\/a>)<\/strong> operations were initiated in October 2007. XGOHI re-maps the GOES-10 GVAR data before<\/em> the satellite imagery is re-broadcast to users, which may have a slight impact on data latency. One important issue with XGOHI is the fact that 3.9 \u00c2\u00b5m “hot spot” detection capability is somewhat diminished using GOES-10.<\/p>\n

The image examples shown here demonstrate a few of the subtle differences between GOES-12 and GOES-10, and the early artifacts of the satellite transition.<\/p>\n

\"AWIPS<\/a><\/p>\n

GOES-12 had the new 4-km resolution, spectrally-wider 6.5 \u00c2\u00b5m “water vapor” channel; the 8-km resolution, spectrally-narrow 6.7 \u00c2\u00b5m “water vapor” channel on GOES-10 is the same as the corresponding water vapor channel on GOES-11. As a result, composites of GOES-11 and GOES-10 water vapor images will exhibit less of a “seam” where the data from the two satellites are merged (see: 16:30 UTC 04 Dec 2007 image<\/a><\/strong> | 17:30 UTC 05 Dec 2007 image<\/strong><\/a>). Prior to GOES-10 data beginning to appear in AWIPS as of about 17:30 UTC on 05 December, there was only GOES-11 coverage for approximately 24 hours (above)<\/strong><\/em>.<\/p>\n

\"AWIPS<\/a><\/p>\n

The 10.7 \u00c2\u00b5m IR “window” channels are identical on GOES-11 and GOES-10 . Prior to GOES-10 data beginning to appear in AWIPS as of about 17:30 UTC on 05 December, there was only GOES-11 IR channel coverage for approximately 24 hours (above)<\/strong><\/em>.<\/p>\n

\"GOES-10<\/a><\/p>\n

GOES-12 replaced the 12.0 \u00c2\u00b5m<\/strong> IR channel (the so-called “dirty IR window” channel) with a 13.3 \u00c2\u00b5m<\/strong> “CO2 absorption” IR channel. This new 13.3 \u00c2\u00b5m channel was used to derive cloud height information using the GOES-12 imager, which was also employed for height assignment of GOES-12 water vapor and visible\/IR cloud drift winds (atmospheric motion vectors or AMVs). As a result, the GOES-10 (GOES-East) AMV height assignments will not be quite as good without the 13.3 \u00c2\u00b5m channel (instead relying on the less-accurate IR window<\/em> and water vapor intercept<\/em> height assignment methods).<\/p>\n

The 12.0 \u00c2\u00b5m IR channel on the older GOES (GOES-10 and GOES-11) is useful for detecting volcanic ash<\/strong> or airborne dust\/sand<\/strong> using the 11-12 \u00c2\u00b5m IR difference product (above)<\/strong><\/em> — so this ash\/dust detection capability has returned to GOES East (for the time being). Note, however, that the product in AWIPS is incorrectly labeled as “11\u00c2\u00b5-13\u00c2\u00b5” for NWS forecast offices localized to use GOES-East (since GOES-12 had the 13.3 \u00c2\u00b5m channel)<\/p>\n

Due to the high satellite viewing angle from GOES-10, GOES sounder coverage will not be available over portions of the central US (affecting sounder-derived products such as Total Precipitable Water). NWS forecast offices who have added CIMSS MODIS products<\/strong><\/a> to their local AWIPS (via LDM subscription)<\/em> can access that particular product suite to help fill in the gap (below)<\/strong><\/em>.<\/p>\n

\"Total
\n<\/a><\/p>\n

Note: GOES-12 was returned to service as the operational GOES-East satellite on 17 December 2007.\u00c2\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

On 04 December 2007, GOES-12 (the operational GOES-East satellite at 75\u00c2\u00ba W longitude) experienced an anomaly in spacecraft attitude following a North-South station keeping maneuver; initial efforts to restore GOES-12 to a normal on-orbit mode were unsuccessful. As a result, GOES-10 (at 60\u00c2\u00ba W longitude) was reassigned from South American operations to replace GOES-12 as […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15,14,18,19,12],"tags":[],"class_list":["post-582","post","type-post","status-publish","format-standard","hentry","category-goes-sounder","category-goes-10","category-goes-11","category-goes-12","category-modis"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/582","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\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=582"}],"version-history":[{"count":0,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/582\/revisions"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}