*2021/09/14 08:57:15.28 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2021/05/14 07:16:52.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 78 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : E32B3B7A NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Pressure:CTD dbar 3.2 79.8 2 Temperature:CTD deg_C_(ITS90) 6.6933 10.0703 3 Salinity:CTD PSS-78 25.9328 32.2056 4 Sigma-t:CTD kg/m^3 19.8981 25.2841 5 Transmissivity:CTD:650 %/m 33.6 58.8 6 Transmissivity:CTD:530 %/m 51 88.4 7 Oxygen:Dissolved:CTD:Volume ml/l 4.48 6.93 8 Oxygen:Dissolved:CTD:Mass µmol/kg 195.2 303.4 9 Fluorescence:CTD:Seapoint mg/m^3 0.134 0.972 10 PAR:CTD µE/m^2/sec 0 0.7 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F ' ' 1 2 -99 ' ' 9 F ' ' 4 3 -99 ' ' 9 F ' ' 4 4 -99 ' ' 9 F R4 4 5 -99 ' ' 6 F ' ' 1 6 -99 ' ' 6 F ' ' 1 7 -99 ' ' 7 F ' ' 2 8 -99 ' ' 6 F ' ' 1 9 -99 ' ' 8 F ' ' 3 10 -99 ' ' 7 F ' ' 1 $END *ADMINISTRATION MISSION : 2021-006 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : Line P SCIENTIST : Robert M. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : North-East Pacific STATION : CH10 EVENT NUMBER : 111 LATITUDE : 54 26.74000 N ! (deg min) LONGITUDE : 130 39.32000 W ! (deg min) WATER DEPTH : 85 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS CTDEDIT was used to remove some near-surface records and records corrupted by shed wakes near the bottom of the cast. Data Processing Notes: ---------------------- Transmissivity, Fluorescence and PAR data are nominal and unedited except that some records were removed in editing temperature and salinity. There were 2 WetLabs CStar transmissometers in use during this cruise: Transmissometer:CTD:530 refers to sensor #1883DG (530nm - green) Transmissometer:CTD:650 refers to sensor #1185DR (650nm - red) For comparison with other Institute of Ocean Sciences cruises, note that the transmissometer wavelength is 650 nm unless otherwise stated. NOTE: While the CTD fluorescence data are expressed in concentration units, they do not always compare well to extracted chlorophyll samples, particularly for casts far from shore. It is recommended that users check extracted chlorophyll values where available. The Fluorescence:CTD channel was removed from the CTD files for events 0001 to 0015 due to excessive noise. The problem was resolved when a Y-cable was replaced before event 0016. Data collected during bottle stops looked better, so the channel is included in CHE files. Oxygen:Dissolved:CTD was calibrated using the method described in Sea-Bird Application Note #64-2, June 2012 revision (Sea-Bird_64-2_Jun2012.pdf), except that a small offset in the fit was allowed. The Oxygen:Dissolved:CTD sensor has a fairly long response time so data accuracy is not as high when it is in motion as it is during stops for bottles. This will be especially true when vertical dissolved oxygen gradients are large. To get an estimate of the accuracy of the Oxygen:Dissolved:CTD data during downcasts (after recalibration) a rough comparison was made between downcast Oxygen:Dissolved:CTD data and upcast titrated samples. Much of the difference will be due to problems with flushing of Niskin bottles and/or analysis errors, so the following statement likely underestimates Oxygen:Dissolved:CTD accuracy. Downcast (CTD files) Oxygen:Dissolved:CTD data for this cruise are considered, very roughly, to be ±3% except in areas of very large DO gradients, especially at the base of the mixed layer. For details on the processing see document 2021-006-proc.pdf. !--1--- ---2---- ---3---- ---4---- --5-- --6-- --7--- --8-- ---9--- --10-- !Pressu Temperat Salinity Sigma-t: Trans Trans Oxygen Oxyge Fluores PAR: !re:CTD ure:CTD :CTD CTD missi missi :Disso n:Dis cence: CTD ! vity: vity: lved: solve CTD: ! CTD: CTD: CTD: d:CTD Seapoin ! 650 530 Volume :Mass t !------ -------- -------- -------- ----- ----- ------ ----- ------- ------ *END OF HEADER 3.2 10.0703 25.9328 19.8981 46.5 62.4 6.93 303.4 0.802 0.7 4.0 9.9689 26.0866 20.0331 46.3 62.3 6.72 294.1 0.797 0.6 5.0 9.3353 26.9832 20.8261 45.3 61.9 6.58 288.0 0.791 0.4 6.0 7.9407 28.9078 22.5275 41.7 51.0 6.54 285.6 0.972 0.2 7.0 7.6816 29.3907 22.9410 33.6 62.7 6.46 282.1 0.811 0.2 8.0 7.5762 29.6275 23.1409 43.8 72.3 6.45 281.7 0.793 0.1 9.0 7.5387 29.8205 23.2974 52.2 77.1 6.48 282.9 0.828 0.1 10.0 7.5709 30.1583 23.5584 53.3 79.1 6.51 284.3 0.830 0.0 11.0 7.5719 30.4244 23.7672 52.7 80.3 6.55 285.7 0.795 0.0 12.0 7.5538 30.4696 23.8051 54.5 81.2 6.56 286.1 0.762 0.0 13.0 7.5673 30.5129 23.8373 55.8 82.4 6.54 285.4 0.639 0.0 14.0 7.5785 30.5522 23.8666 56.3 83.1 6.51 283.7 0.559 0.0 15.0 7.5896 30.6140 23.9137 56.1 82.6 6.48 282.5 0.498 0.0 16.0 7.5570 30.6827 23.9720 56.3 83.0 6.47 282.2 0.465 0.0 17.0 7.5407 30.7336 24.0142 56.5 83.3 6.46 281.7 0.397 0.0 18.0 7.5418 30.7534 24.0296 56.6 83.8 6.44 281.0 0.388 0.0 19.0 7.5320 30.7582 24.0347 56.7 84.2 6.43 280.6 0.343 0.0 20.0 7.4164 30.7583 24.0503 57.4 84.2 6.42 280.2 0.302 0.0 21.0 7.3444 30.7628 24.0635 57.6 85.1 6.38 278.3 0.265 0.0 22.0 7.2502 30.8118 24.1144 57.9 86.0 6.34 276.6 0.239 0.0 23.0 7.2565 30.8641 24.1547 58.1 86.3 6.34 276.6 0.216 0.0 24.0 7.2766 30.9508 24.2202 57.8 86.8 6.35 276.8 0.212 0.0 25.0 7.2865 31.0033 24.2602 57.5 86.9 6.35 277.0 0.195 0.0 26.0 7.2966 31.0316 24.2811 58.2 86.3 6.35 277.0 0.183 0.0 27.0 7.2881 31.0557 24.3012 58.5 87.0 6.34 276.3 0.191 0.0 28.0 7.2838 31.0829 24.3231 58.7 88.0 6.32 275.6 0.181 0.0 29.0 7.2821 31.0952 24.3330 58.7 88.3 6.31 275.1 0.180 0.0 30.0 7.2771 31.1050 24.3414 58.8 88.1 6.30 274.9 0.167 0.0 31.0 7.2573 31.1132 24.3505 58.6 88.4 6.31 275.0 0.169 0.0 32.0 7.2709 31.1249 24.3578 58.6 88.2 6.30 274.7 0.167 0.0 33.0 7.2820 31.1370 24.3659 58.8 87.8 6.30 274.7 0.164 0.0 34.0 7.2813 31.1385 24.3672 58.8 88.0 6.29 274.4 0.167 0.0 35.0 7.2677 31.1463 24.3751 58.8 87.8 6.28 273.7 0.159 0.0 36.0 7.2527 31.1574 24.3858 58.7 88.4 6.26 273.0 0.161 0.0 37.0 7.2382 31.1693 24.3971 58.6 88.2 6.24 272.2 0.161 0.0 38.0 7.2259 31.1845 24.4107 58.5 88.3 6.22 271.4 0.159 0.0 39.0 7.2194 31.1956 24.4203 58.6 88.3 6.21 270.8 0.159 0.0 40.0 7.2151 31.2035 24.4271 58.6 88.0 6.20 270.4 0.159 0.0 41.0 7.2081 31.2216 24.4422 58.6 88.2 6.22 271.1 0.158 0.0 42.0 7.2099 31.2464 24.4615 58.5 88.2 6.27 273.4 0.165 0.0 43.0 7.4015 31.3248 24.4975 58.4 88.1 6.31 275.2 0.164 0.0 44.0 7.4337 31.3504 24.5132 58.3 88.0 6.32 275.5 0.171 0.0 45.0 7.4078 31.3877 24.5461 58.5 88.0 6.27 273.2 0.171 0.0 46.0 7.3448 31.4018 24.5656 58.4 88.0 6.22 271.3 0.162 0.0 47.0 7.3648 31.4178 24.5755 58.4 87.9 6.19 269.8 0.159 0.0 48.0 7.3248 31.4324 24.5924 58.4 87.9 6.16 268.4 0.159 0.0 49.0 7.3199 31.4603 24.6150 58.3 88.1 6.15 267.9 0.159 0.0 50.0 7.3362 31.4738 24.6234 58.3 87.9 6.15 268.2 0.159 0.0 51.0 7.3503 31.4843 24.6298 58.3 87.6 6.11 266.1 0.159 0.0 52.0 7.2901 31.5010 24.6510 58.6 87.6 5.98 260.6 0.159 0.0 53.0 7.1039 31.4994 24.6745 58.4 88.1 5.84 254.5 0.168 0.0 54.0 7.0310 31.5087 24.6914 58.5 87.7 5.73 249.9 0.154 0.0 55.0 7.0214 31.5652 24.7371 58.3 88.0 5.65 246.2 0.158 0.0 56.0 6.9910 31.5873 24.7585 58.2 88.0 5.60 244.0 0.149 0.0 57.0 6.9684 31.5952 24.7677 58.3 88.0 5.56 242.4 0.148 0.0 58.0 6.9375 31.6306 24.7996 58.2 88.0 5.51 239.9 0.147 0.0 59.0 6.9128 31.6671 24.8315 57.6 87.7 5.47 238.2 0.159 0.0 60.0 6.9071 31.6768 24.8399 57.8 87.4 5.45 237.4 0.154 0.0 61.0 6.8965 31.6955 24.8560 57.8 86.9 5.43 236.6 0.147 0.0 62.0 6.8899 31.7078 24.8666 57.5 87.0 5.41 236.0 0.143 0.0 63.0 6.8750 31.7401 24.8939 57.7 86.8 5.39 235.1 0.147 0.0 64.0 6.8636 31.7637 24.9140 57.6 86.9 5.37 234.2 0.147 0.0 65.0 6.8552 31.7796 24.9276 57.5 86.6 5.35 233.3 0.137 0.0 66.0 6.8498 31.7874 24.9344 57.5 86.9 5.34 232.6 0.142 0.0 67.0 6.8482 31.7899 24.9366 57.6 86.6 5.32 231.9 0.147 0.0 68.0 6.8458 31.7935 24.9398 57.7 87.0 5.31 231.4 0.138 0.0 69.0 6.8392 31.8011 24.9466 57.7 86.5 5.28 230.0 0.144 0.0 70.0 6.8232 31.8202 24.9637 57.9 87.0 5.24 228.5 0.134 0.0 71.0 6.8193 31.8335 24.9747 57.5 87.0 5.22 227.4 0.138 0.0 72.0 6.7982 31.8665 25.0034 57.6 87.0 5.18 225.7 0.142 0.0 73.0 6.7931 31.8796 25.0144 57.5 87.1 5.14 224.0 0.137 0.0 74.0 6.7807 31.9159 25.0446 57.3 86.8 5.08 221.3 0.134 0.0 75.0 6.7622 31.9715 25.0908 57.0 86.5 4.98 216.8 0.137 0.0 76.0 6.7376 32.0463 25.1529 56.4 85.6 4.85 211.2 0.141 0.0 77.0 6.7169 32.1154 25.2100 53.0 80.3 4.71 205.2 0.151 0.0 78.0 6.7070 32.1494 25.2381 50.9 75.2 4.62 201.1 0.138 0.0 79.0 6.6991 32.1811 25.2641 48.6 71.6 4.53 197.4 0.141 0.0 79.8 6.6933 32.2056 25.2841 46.4 68.1 4.48 195.2 0.147 0.0