{"id":3823,"date":"2024-09-24T08:30:54","date_gmt":"2024-09-24T12:30:54","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/?page_id=3823"},"modified":"2024-09-24T08:30:54","modified_gmt":"2024-09-24T12:30:54","slug":"2024-dispatch-24","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/expeditions\/2024-expedition\/2024-dispatches\/2024-dispatch-24\/","title":{"rendered":"Dispatch 24: Wrapping up CTD operations"},"content":{"rendered":"\n\n\t<h1>Dispatch 24: Wrapping up CTD operations<\/h1>\n\t<h3>Ashley Arroyo (Yale University)<\/h3>\n<h3>September 22, 2024<br \/>\n16:00 UTC, 69.65\u00b0N 138.91\u00b0W<\/h3>\n<p>Conditions:<\/p>\n<ul>\n<li>Mostly cloudy<\/li>\n<li>0% sea ice cover<\/li>\n<li>8\u00b0C<\/li>\n<li>Winds 14.1 knots northeasterly<\/li>\n<li>Sunrise: 22-Sep-2024 08:57:33 -06<\/li>\n<li>Sunset: 22-Sep-2024 21:21:26 -06<\/li>\n<li>Day length: 12h 23mn 53s<\/li>\n<\/ul>\n<p>Early this morning, the nighttime watch-standers completed the last two CTD rosette casts of the MK-Line, which marked the official end of CTD operations that were planned for the 2024 BGOS\/JOIS expedition! The last station was CB-28aa, which was only 56-meters deep. Although the rosette houses 24 10-liter Niskin bottles, it was only necessary to fire 7 bottles to sample the entire shallow water column. After the completion of station CB-28aa, the Louis steamed toward Herschel Island to quickly recover and deploy a surface mooring that is maintained by the Institute of Ocean Sciences (IOS). After mooring operations were completed, the science crew did one last CTD rosette cast to compare the water samples to the mooring data, which marked the actual last rosette cast of this year&#8217;s expedition. Over the course of the expedition, the science team completed a total of 61 CTD\/rosette casts, with water samples taken from 1187 Niskin bottles! The water samples included measurements for properties including oxygen, carbon, nutrients, salt, chlorophyll, oxygen isotopes (<sup>18<\/sup>O), biotoxins, organic matter, ammonium, and DNA.<\/p>\n<p>The Louis is now steaming toward Amundsen Gulf where we will enter the Canadian Archipelago on our voyage back towards Cambridge Bay where we will disembark from the Louis on Thursday morning.<\/p>\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-content\/uploads\/sites\/108\/2024\/09\/Map-22.png\" alt=\"Map showing our current location.\" height=\"715\" width=\"913\" title=\"Map\" \/>\n\t\tMap showing our current location.\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-content\/uploads\/sites\/108\/2024\/09\/Photo1-18.jpg\" alt=\"A big thank you goes to Captain Briggs for making this years' expedition a huge success! (Photo by Mary-Louise Timmermans) \" height=\"791\" width=\"1051\" title=\"Photo1\" \/>\n\t\tA big thank you goes to Captain Briggs for making this years&#8217; expedition a huge success! (Photo by Mary-Louise Timmermans) \n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-content\/uploads\/sites\/108\/2024\/09\/Photo2-20.jpg\" alt=\"The bongo lowered off the deck ready to collect zooplankton (Photo by Paul Macoun) \" height=\"653\" width=\"977\" title=\"Photo2\" \/>\n\t\tThe bongo lowered off the deck ready to collect zooplankton (Photo by Paul Macoun) \n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-content\/uploads\/sites\/108\/2024\/09\/Photo3-19.jpg\" alt=\"Sunrise (Photo by Mary-Louise Timmermans)\" height=\"852\" width=\"644\" title=\"Photo3\" \/>\n\t\tSunrise (Photo by Mary-Louise Timmermans)\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-content\/uploads\/sites\/108\/2024\/09\/Photo4-18.jpg\" alt=\"Jerome Sibley and Mike Dempsey in the man-basket to clip the IOS mooring (Photo by Paul Macoun)\" height=\"699\" width=\"812\" title=\"Photo4\" \/>\n\t\tJerome Sibley and Mike Dempsey in the man-basket to clip the IOS mooring (Photo by Paul Macoun)\n\n","protected":false},"excerpt":{"rendered":"<p>Dispatch 24: Wrapping up CTD operations Ashley Arroyo (Yale University) September 22, 2024 16:00 UTC, 69.65\u00b0N 138.91\u00b0W Conditions: Mostly cloudy 0% sea ice cover 8\u00b0C Winds 14.1 knots northeasterly Sunrise: 22-Sep-2024 08:57:33 -06 Sunset: 22-Sep-2024 21:21:26 -06 Day length: 12h 23mn 53s Early this morning, the nighttime watch-standers completed the last two CTD rosette casts&hellip;<\/p>\n","protected":false},"author":188,"featured_media":0,"parent":3557,"menu_order":24,"comment_status":"closed","ping_status":"closed","template":"tpl-sidebar.php","meta":{"advanced-sidebar-menu\/link-title":"Dispatch 24: Wrapping up CTD operations","advanced-sidebar-menu\/exclude-page":false},"_links":{"self":[{"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/pages\/3823"}],"collection":[{"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/users\/188"}],"replies":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/comments?post=3823"}],"version-history":[{"count":2,"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/pages\/3823\/revisions"}],"predecessor-version":[{"id":3830,"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/pages\/3823\/revisions\/3830"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/pages\/3557"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/beaufortgyre\/wp-json\/wp\/v2\/media?parent=3823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}