{"id":39041,"date":"2020-12-02T20:59:29","date_gmt":"2020-12-02T20:59:29","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=39041"},"modified":"2020-12-08T01:22:22","modified_gmt":"2020-12-08T01:22:22","slug":"a68a-update","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/39041","title":{"rendered":"A68a Update"},"content":{"rendered":"\r\n

A very large iceberg broke off the Larsen-C Ice Shelf on the Antarctic Peninsula in July 2017<\/a>\u00a0(recall this CIMSS Satellite Blog<\/a> post, or this more recent post<\/a>). While NOAA\u2019s GOES-16 ABI<\/a> visible sensors may not be ideal, they can monitor the iceberg\u2019s location if the cloud cover is not too thick, as shown in the “natural color” animation. A similar loop, in the animated gif<\/a> format. These composite images include information from ABI “blue” and “red” visible bands, along with the near-infrared “vegetation” band. A sample still image<\/a> from November 21, 2020. More information can be found in the quick guide<\/a>.<\/p>\r\n\r\n\r\n\r\n

A GOES-16 natural color animation, using images at 15:30 UTC each day. The first day is November 4, while the last day is December 2, 2020.<\/figcaption>\r\n<\/figure>\r\n\r\n\r\n\r\n

Since it was relatively cloud-free for several hours on 02 December, an animation of GOES-16 “Red” Visible (0.64 \u00b5m) images is shown below — note the presence of numerous small ice floes that had separated from the edges of A68a<\/a>, and were circulating within the various ocean currents surrounding the large iceberg as it continued its slow drift toward South Georgia island.\u00a0<\/p>\r\n

\"GOES-16<\/a>

GOES-16 “Red” Visible (0.64 \u00b5m)<\/em> images from 02 December 2020 [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>\r\n

The geo2grid<\/a> software was used to generate the images for these animations.<\/p>\r\n

Thanks to a recent tweet by Simon Proud, showing a GOES-16 animation of A68a:<\/p>\r\n

Happy that what started as a joke with @planetlabs<\/a>
after a talk at @OxfordAOPP<\/a> by CEO @Will4Planet<\/a> has turned into beautiful pictures of Iceberg A68a!
Story by @BBCAmos<\/a> here: https:\/\/t.co\/n4j3EvIn11<\/a>

Plus, a video of A68a over the past few days. pic.twitter.com\/3cdnOQJSgV<\/a><\/p>— Simon Proud (@simon_sat) December 2, 2020<\/a><\/blockquote>