{"id":2562,"date":"2019-11-14T16:50:11","date_gmt":"2019-11-14T20:50:11","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/itp\/?page_id=2562"},"modified":"2021-07-20T13:30:30","modified_gmt":"2021-07-20T17:30:30","slug":"itp57-data-processing","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/itp\/data\/completed-missions\/itp57\/itp57-data-processing\/","title":{"rendered":"ITP 057 Data Processing"},"content":{"rendered":"\r\n\t<h1>ITP57 Data Processing<\/h1>\r\n\t<p>The 946 profiles that were transmitted from the ITP were processed according to the procedures described in the\u00a0<a href=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/08\/ITP_Data_Processing_Procedures_35803-1.pdf\">ITP Updated Data Processing Procedures<\/a>.\u00a0 The processing parameters for this ITP are shown in the figures to the right. Thermohaline staircases were not well defined, especially over the early part of the record, so that initial estimates for CTD lag corrections could not be determined from sharp interfaces. Instead, constant values based on standard values were mostly used and modified slightly where needed to address occasional density spikes and inversions presumably related to reduced flow through the sensors.<\/p>\r\n<p>Over 96% of the profiles spanned more than 700 m of the vertical range and nearly 90% contained both good temperature and conductivity data. A few small periods of contaminated conductivity profiles were removed (the largest contiguous series consisted of 6 profiles, with a total of 20 for the whole record). Some small amount of up\/down hysteresis remains for a few short periods (e.g., profiles 730 to 740 and 840 to 870).<\/p>\r\n<p>See the Data Products tab to the left for descriptions of the three levels (I, II, III) of data processing and to access all data.<\/p>\r\n\t\t\t\t<a href=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57loc2_483373.jpg\" target=\"_self\" rel=\"noopener noreferrer\">\r\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57loc2_483373.jpg\" alt=\"ITP Surface Buoy Status.\" height=\"1730\" width=\"1000\" title=\"itp57loc2_483373\" \/>\r\n\t\t\t\t<\/a>\r\n\t\tITP Surface Buoy Status.\r\n\t\t\t\t<a href=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57dat1_483357.jpg\" target=\"_self\" rel=\"noopener noreferrer\">\r\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57dat1_483357.jpg\" alt=\"ITP profiler engineering data.\" height=\"1480\" width=\"1560\" title=\"itp57dat1_483357\" \/>\r\n\t\t\t\t<\/a>\r\n\t\tITP profiler engineering data.\r\n\t\t\t\t<a href=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57final1_483375.jpg\" target=\"_self\" rel=\"noopener noreferrer\">\r\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57final1_483375.jpg\" alt=\"Top: number of bad points removed, Middle: variance of verticle difference of temperature and salinity in step region for up-going profiles, Bottom: temperature lag.\" height=\"5454\" width=\"4117\" title=\"itp57final1_483375\" \/>\r\n\t\t\t\t<\/a>\r\n\t\tTop: number of bad points removed, Middle: variance of verticle difference of temperature and salinity in step region for up-going profiles, Bottom: temperature lag.\r\n\t\t\t\t<a href=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57final2_483393.jpg\" target=\"_self\" rel=\"noopener noreferrer\">\r\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57final2_483393.jpg\" alt=\"Top: conductivity lag, Middle: conductivity thermal mass amplitude correction, Bottom: conductivity thermal mass lag correction\" height=\"5463\" width=\"4078\" title=\"itp57final2_483393\" \/>\r\n\t\t\t\t<\/a>\r\n\t\tTop: conductivity lag, Middle: conductivity thermal mass amplitude correction, Bottom: conductivity thermal mass lag correction\r\n\t\t\t\t<a href=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57final3_483395.jpg\" target=\"_self\" rel=\"noopener noreferrer\">\r\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57final3_483395.jpg\" alt=\"Top: down pressure deviation correction, Middle: salinity ratio adjustment, Bottom: number of filtered spikes.\" height=\"5478\" width=\"4094\" title=\"itp57final3_483395\" \/>\r\n\t\t\t\t<\/a>\r\n\t\tTop: down pressure deviation correction, Middle: salinity ratio adjustment, Bottom: number of filtered spikes.\r\n\t\t\t\t<a href=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57final4_483377.jpg\" target=\"_self\" rel=\"noopener noreferrer\">\r\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/11\/itp57final4_483377.jpg\" alt=\"Top: number of bad dissolved oxygen points removed, Middle: dissolved oxygen ratio adjustment, Bottom: number of filtered spikes.\" height=\"5478\" width=\"4125\" title=\"itp57final4_483377\" \/>\r\n\t\t\t\t<\/a>\r\n\t\tTop: number of bad dissolved oxygen points removed, Middle: dissolved oxygen ratio adjustment, Bottom: number of filtered spikes.\r\n","protected":false},"excerpt":{"rendered":"<p>ITP57 Data Processing The 946 profiles that were transmitted from the ITP were processed according to the procedures described in the\u00a0ITP Updated Data Processing Procedures.\u00a0 The processing parameters for this ITP are shown in the figures to the right. Thermohaline staircases were not well defined, especially over the early part of the record, so that&hellip;<\/p>\n","protected":false},"author":83,"featured_media":0,"parent":2549,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"tpl-sidebar.php","meta":{"advanced-sidebar-menu\/link-title":"","advanced-sidebar-menu\/exclude-page":false},"_links":{"self":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2562"}],"collection":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/users\/83"}],"replies":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/comments?post=2562"}],"version-history":[{"count":3,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2562\/revisions"}],"predecessor-version":[{"id":3618,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2562\/revisions\/3618"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2549"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/media?parent=2562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}