{"id":1999,"date":"2019-09-12T17:11:47","date_gmt":"2019-09-12T21:11:47","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/itp\/?page_id=1999"},"modified":"2021-07-20T12:54:31","modified_gmt":"2021-07-20T16:54:31","slug":"itp35-data-processing","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/itp\/data\/completed-missions\/itp35\/itp35-data-processing\/","title":{"rendered":"ITP 035 Data Processing"},"content":{"rendered":"\r\n\t<h1>ITP35 Data Processing<\/h1>\r\n\t<p>The 1357 CTD profiles that were recovered from the ITP flash card 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>, and velocity as described in\u00a0<i>Cole et al. (2014)<\/i>.\u00a0The processing parameters for ITP 35 are shown in the figures to the right.\u00a0 The profiler had only a few instances where it had trouble covering the full vertical extent of the profile and the CTD data were largely free of icing and biofouling.<\/p>\r\n<p>Thermohaline staircases were present throughout the time series, enabling CTD lag corrections. The CTD sensors appeared to be very stable throughout the year-long deployment, all of the lags were in the typical range as previous systems, and varied little over time.\u00a0 The potential conductivity adjustment began and took about a week to stabilize with only one significant deviation thereafter.<\/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<p>References:<\/p>\r\n<p>Cole, S., M.-L. Timmermans, J. Toole, R. Krishfield, F. Thwaites, 2014. Ekman veering, internal waves, and turbulence observed under Arctic sea-ice.\u00a0<i>Journal of Physical Oceanography,<\/i>\u00a0Vol. 44, doi:10.1175\/JPO-D-12-0191.1.<\/p>\r\n\t\t\t\t<a href=\"https:\/\/www2.whoi.edu\/site\/itp\/wp-content\/uploads\/sites\/92\/2019\/09\/itp35loc2_449093.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\/09\/itp35loc2_449093.jpg\" alt=\"ITP Surface Buoy Status.\" height=\"1730\" width=\"1000\" title=\"itp35loc2_449093\" \/>\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\/09\/itp35dat1_449113.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\/09\/itp35dat1_449113.jpg\" alt=\"ITP profiler engineering data.\" height=\"1480\" width=\"1560\" title=\"itp35dat1_449113\" \/>\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\/09\/itp35final1_449133.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\/09\/itp35final1_449133.jpg\" alt=\"Data\" height=\"2717\" width=\"2063\" title=\"itp35final1_449133\" \/>\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\/09\/itp35final2_449115.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\/09\/itp35final2_449115.jpg\" alt=\"Data\" height=\"2712\" width=\"2020\" title=\"itp35final2_449115\" \/>\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\/09\/itp35final3_449117.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\/09\/itp35final3_449117.jpg\" alt=\"Data\" height=\"2728\" width=\"2031\" title=\"itp35final3_449117\" \/>\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\/09\/itp35final4_448935.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\/09\/itp35final4_448935.jpg\" alt=\"Data\" height=\"1763\" width=\"2012\" title=\"itp35final4_448935\" \/>\r\n\t\t\t\t<\/a>\r\n\t\tTop: Geomagnetic declination correction, Bottom: Correction due to sound speed.\r\n","protected":false},"excerpt":{"rendered":"<p>ITP35 Data Processing The 1357 CTD profiles that were recovered from the ITP flash card were processed according to the procedures described in the\u00a0ITP Updated Data Processing Procedures, and velocity as described in\u00a0Cole et al. (2014).\u00a0The processing parameters for ITP 35 are shown in the figures to the right.\u00a0 The profiler had only a few&hellip;<\/p>\n","protected":false},"author":83,"featured_media":0,"parent":1974,"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\/1999"}],"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=1999"}],"version-history":[{"count":4,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/1999\/revisions"}],"predecessor-version":[{"id":3543,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/1999\/revisions\/3543"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/pages\/1974"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/itp\/wp-json\/wp\/v2\/media?parent=1999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}