{"id":908,"date":"2019-08-27T11:47:16","date_gmt":"2019-08-27T15:47:16","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/itp\/?page_id=908"},"modified":"2021-07-20T11:18:47","modified_gmt":"2021-07-20T15:18:47","slug":"itp-1-data-processing","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/itp\/data\/completed-missions\/itp1\/itp-1-data-processing\/","title":{"rendered":"ITP 001 Data Processing"},"content":{"rendered":"\r\n\t<h1>ITP 1 Data Processing<\/h1>\r\n\t<p>The 2043 profiles that were recovered from the ITP were processed according to the procedures described in the\u00a0<a href=\"\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/08\/ITP_Data_Processing_Procedures_35803.pdf\">ITP Data Processing Procedures<\/a>.\u00a0 The processing parameters for ITP1 are shown in the figures to the right. \u00a0The time series is particularly influenced by a deep eddy(s) between profiles 70-79 and 140-176, which also coincide with shifts in the conductivity calibration ratio.\u00a0\u00a0Consistent sensor lags are obtained through the thermohaline staircases except in the eddy and after profile 1257 (when the staircases are not as prevalent).\u00a0\u00a0After about profile 1534, the profiler had more frequent difficulties completing full profiles vertically.\u00a0\u00a0Some of this could be related to increased ice drifts, by icing, or wire\/roller wear could also be factors.\u00a0\u00a0No CTD information is available for profiles 1755-1802 when the instrument was stuck at the top, and from profile 1544, as apparently an instrument reset occurred in the underwater unit.\u00a0\u00a0Bad points due to suspected biofouling or sensor icing are removed.\u00a0\u00a0In the final product, 2037 profiles (99.7%) are free of more than one bad temperature measurements, and 1979 (96.9%) are free of more than one bad conductivity spikes.<\/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\/08\/itp1loc2_80733.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\/08\/itp1loc2_80733.jpg\" alt=\"ITP surface buoy status\" height=\"1730\" width=\"1000\" title=\"itp1loc2_80733\" \/>\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\/08\/itp1dat1_80736.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\/08\/itp1dat1_80736.jpg\" alt=\"ITP profiler engineering data\" height=\"1480\" width=\"1560\" title=\"itp1dat1_80736\" \/>\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\/08\/itp1final1_80738.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\/08\/itp1final1_80738.jpg\" alt=\"Data\" height=\"1358\" width=\"1021\" title=\"itp1final1_80738\" \/>\r\n\t\t\t\t<\/a>\r\n\t\tTop: number of bad points removed, Middle: variance of vertical 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\/08\/itp1final2_80740.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\/08\/itp1final2_80740.jpg\" alt=\"Data\" height=\"1358\" width=\"1033\" title=\"itp1final2_80740\" \/>\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\/08\/itp1final3_80742.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\/08\/itp1final3_80742.jpg\" alt=\"Data\" height=\"1358\" width=\"1021\" title=\"itp1final3_80742\" \/>\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>ITP 1 Data Processing The 2043 profiles that were recovered from the ITP were processed according to the procedures described in the\u00a0ITP Data Processing Procedures.\u00a0 The processing parameters for ITP1 are shown in the figures to the right. \u00a0The time series is particularly influenced by a deep eddy(s) between profiles 70-79 and 140-176, which also&hellip;<\/p>\n","protected":false},"author":83,"featured_media":0,"parent":879,"menu_order":3,"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\/908"}],"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=908"}],"version-history":[{"count":3,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/908\/revisions"}],"predecessor-version":[{"id":3400,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/908\/revisions\/3400"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/879"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/media?parent=908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}