{"id":2441,"date":"2019-10-23T16:58:32","date_gmt":"2019-10-23T20:58:32","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/itp\/?page_id=2441"},"modified":"2021-07-20T13:25:38","modified_gmt":"2021-07-20T17:25:38","slug":"itp53-data-processing","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/itp\/data\/completed-missions\/itp53\/itp53-data-processing\/","title":{"rendered":"ITP 053 Data Processing"},"content":{"rendered":"\r\n\t<h1>ITP53 Data Processing<\/h1>\r\n\t<p>The 750 profiles that were transmitted from ITP53 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 are shown in the figures to the right.\u00a0 Buoy drift speeds were almost always less than 30 cm\/s until the last 40 days of the time series, so the profiler covered at least 700 m in nearly 95% of the profiles that it communicated to the surface package.<\/p>\r\n<p>Thermohaline staircases were well defined for the first 500 profiles to generate initial estimates for CTD lag corrections. They were further tuned to reduce small spikes at the base of TS steps as well as to reduce the slight up\/down hysteresis present for much of the record, but were overall within typical ranges, with little drift and typical variability. Two significant fouling events, centered around profiles 335 and 580 respectively, were addressed by editing a number of profiles or portions thereof as well as by an increase in the potential conductivity calibration correction (variable &#8220;rat&#8221;).<\/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\/10\/itp53loc2_455638.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\/10\/itp53loc2_455638.jpg\" alt=\"ITP Surface Buoy Status.\" height=\"1730\" width=\"1000\" title=\"itp53loc2_455638\" \/>\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\/10\/itp53dat1_455640.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\/10\/itp53dat1_455640.jpg\" alt=\"ITP profiler engineering data.\" height=\"1480\" width=\"1560\" title=\"itp53dat1_455640\" \/>\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\/10\/itp53final1_455715.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\/10\/itp53final1_455715.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=\"2705\" width=\"2043\" title=\"itp53final1_455715\" \/>\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\/10\/itp53final1_455715-1.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\/10\/itp53final1_455715-1.jpg\" alt=\"Top: conductivity lag, Middle: conductivity thermal mass amplitude correction, Bottom: conductivity thermal mass lag correction.\" height=\"2705\" width=\"2043\" title=\"itp53final1_455715\" \/>\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\/10\/itp53final3_455617.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\/10\/itp53final3_455617.jpg\" alt=\"Top: down pressure deviation correction, Middle: salinity ratio adjustment, Bottom: Number of filtered spikes.\" height=\"2713\" width=\"2021\" title=\"itp53final3_455617\" \/>\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","protected":false},"excerpt":{"rendered":"<p>ITP53 Data Processing The 750 profiles that were transmitted from ITP53 were processed according to the procedures described in the\u00a0ITP Updated Data Processing Procedures.\u00a0 The processing parameters for are shown in the figures to the right.\u00a0 Buoy drift speeds were almost always less than 30 cm\/s until the last 40 days of the time series,&hellip;<\/p>\n","protected":false},"author":83,"featured_media":0,"parent":2426,"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\/2441"}],"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=2441"}],"version-history":[{"count":3,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2441\/revisions"}],"predecessor-version":[{"id":3602,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2441\/revisions\/3602"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/2426"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/media?parent=2441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}