*2021/04/21 13:45:23.57 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2020/02/20 11:24:35.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 87 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : D6F6D16F NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Pressure:CTD dbar 2.3 87.6 2 Temperature:CTD deg_C_(ITS90) 6.5662 6.9958 3 Salinity:CTD PSS-78 31.626 32.2319 4 Sigma-t:CTD kg/m^3 24.8426 25.2659 5 Transmissivity:CTD:650 %/m 42.9 49.1 6 Transmissivity:CTD:530 %/m 66.8 78.4 7 Oxygen:Dissolved:CTD:Volume ml/l 5.22 6.66 8 Oxygen:Dissolved:CTD:Mass µmol/kg 227.5 290.3 9 Fluorescence:CTD:Seapoint mg/m^3 0.166 0.565 10 PAR:CTD µE/m^2/sec 0 0.1 $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 : 2020-001 AGENCY : IOS, Ocean Sciences Division, Sidney BC COUNTRY : Canada PROJECT : Line P SCIENTIST : Robert M. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : North-East Pacific STATION : CH4 EVENT NUMBER : 94 LATITUDE : 54 32.50000 N ! (deg min) LONGITUDE : 130 43.52000 W ! (deg min) WATER DEPTH : 92 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS CTDEDIT was used to remove records corrupted by shed wakes; salinity was cleaned lightly. 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. 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. Some 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 are considered, very roughly, to be: ±0.30 ml/l from 0 to 250 dbar (higher in areas of very large DO gradients). ±0.20 ml/l from 250 to 400 dbar. ±0.04 ml/l below 400 dbar. For casts 0089 to 0120 there was no 10 dbar soak so data from channels Oxygen:Dissolved:CTD may have been affected by bubbles in the top 10 to 15 dbar. For details on the processing see document: 2020-001-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 2.3 6.5662 31.6265 24.8440 47.8 76.0 6.65 289.8 0.541 0.1 3.0 6.5738 31.6265 24.8430 47.8 75.9 6.66 290.0 0.548 0.0 4.0 6.5726 31.6260 24.8428 47.8 75.3 6.65 289.8 0.544 0.0 5.0 6.5765 31.6267 24.8429 47.7 75.6 6.65 289.8 0.565 0.0 6.0 6.5754 31.6263 24.8427 47.7 75.9 6.65 289.6 0.544 0.0 7.0 6.5755 31.6265 24.8428 47.7 75.9 6.65 289.7 0.555 0.0 8.0 6.5762 31.6264 24.8427 47.7 75.7 6.66 289.9 0.559 0.0 9.0 6.5770 31.6264 24.8426 47.7 75.9 6.66 290.2 0.534 0.0 10.0 6.5771 31.6265 24.8426 47.7 75.9 6.65 289.9 0.540 0.0 11.0 6.5792 31.6271 24.8428 47.8 75.9 6.65 289.8 0.538 0.0 12.0 6.5822 31.6277 24.8429 47.8 75.9 6.66 289.9 0.542 0.0 13.0 6.5852 31.6284 24.8431 47.8 76.0 6.66 289.9 0.540 0.0 14.0 6.6024 31.6338 24.8452 47.8 75.9 6.65 289.8 0.541 0.0 15.0 6.6274 31.6413 24.8479 48.0 76.0 6.64 289.2 0.549 0.0 16.0 6.6476 31.6482 24.8508 48.2 76.3 6.63 288.9 0.543 0.0 17.0 6.6525 31.6488 24.8506 48.4 76.7 6.64 289.5 0.550 0.0 18.0 6.6548 31.6490 24.8505 48.4 77.2 6.64 289.3 0.551 0.0 19.0 6.6573 31.6489 24.8501 48.5 76.9 6.64 289.2 0.537 0.0 20.0 6.6571 31.6488 24.8501 48.5 76.9 6.64 289.2 0.535 0.0 21.0 6.6586 31.6493 24.8503 48.6 77.4 6.64 289.1 0.536 0.0 22.0 6.6606 31.6503 24.8508 48.6 77.6 6.64 289.3 0.557 0.0 23.0 6.6633 31.6515 24.8514 48.6 77.6 6.63 288.9 0.545 0.0 24.0 6.6656 31.6530 24.8523 48.7 77.6 6.63 289.0 0.538 0.0 25.0 6.6667 31.6542 24.8531 48.7 77.6 6.64 289.1 0.540 0.0 26.0 6.6685 31.6558 24.8541 48.7 77.7 6.64 289.4 0.556 0.0 27.0 6.6689 31.6568 24.8549 48.8 77.6 6.66 289.9 0.539 0.0 28.0 6.6724 31.6600 24.8569 48.7 77.6 6.66 290.1 0.543 0.0 29.0 6.6759 31.6617 24.8578 48.8 77.6 6.66 290.3 0.529 0.0 30.0 6.6863 31.6680 24.8615 48.8 77.9 6.65 289.5 0.521 0.0 31.0 6.6974 31.6741 24.8648 48.8 77.9 6.63 288.6 0.512 0.0 32.0 6.7111 31.6813 24.8688 48.8 77.9 6.61 288.0 0.507 0.0 33.0 6.7203 31.6849 24.8704 48.9 77.9 6.60 287.5 0.480 0.0 34.0 6.7226 31.6865 24.8714 48.9 78.0 6.60 287.4 0.477 0.0 35.0 6.7275 31.6870 24.8712 48.9 78.0 6.59 287.0 0.483 0.0 36.0 6.7318 31.6891 24.8723 48.9 78.0 6.58 286.6 0.483 0.0 37.0 6.7350 31.6904 24.8729 48.9 78.0 6.57 286.4 0.470 0.0 38.0 6.7393 31.6929 24.8743 48.9 78.0 6.57 286.4 0.454 0.0 39.0 6.7417 31.6943 24.8751 48.9 78.3 6.57 286.2 0.449 0.0 40.0 6.7446 31.6958 24.8759 48.9 78.2 6.57 286.4 0.449 0.0 41.0 6.7463 31.6969 24.8765 48.9 78.2 6.57 286.3 0.460 0.0 42.0 6.7478 31.6988 24.8778 49.0 78.2 6.57 286.1 0.446 0.0 43.0 6.7515 31.7012 24.8793 48.9 78.2 6.57 286.2 0.438 0.0 44.0 6.7572 31.7047 24.8813 48.9 78.2 6.56 285.7 0.430 0.0 45.0 6.7688 31.7116 24.8852 49.1 78.0 6.55 285.2 0.424 0.0 46.0 6.7760 31.7160 24.8878 49.0 78.3 6.54 284.8 0.408 0.0 47.0 6.7863 31.7226 24.8916 49.0 78.3 6.52 284.1 0.407 0.0 48.0 6.7929 31.7283 24.8953 49.0 78.3 6.48 282.4 0.410 0.0 49.0 6.8135 31.7513 24.9107 48.7 78.4 6.43 280.2 0.363 0.0 50.0 6.8182 31.7598 24.9168 48.6 78.0 6.40 278.8 0.375 0.0 51.0 6.8178 31.7690 24.9241 48.2 77.7 6.35 276.6 0.342 0.0 52.0 6.8389 31.7998 24.9456 47.9 77.2 6.27 272.9 0.304 0.0 53.0 6.8754 31.8450 24.9765 47.3 76.4 6.19 269.7 0.281 0.0 54.0 6.8990 31.8751 24.9971 46.6 75.6 6.15 267.7 0.265 0.0 55.0 6.9259 31.8944 25.0088 45.9 74.6 6.13 267.1 0.249 0.0 56.0 6.9310 31.8963 25.0096 45.7 73.0 6.14 267.3 0.244 0.0 57.0 6.9381 31.9056 25.0160 45.5 72.1 6.12 266.5 0.234 0.0 58.0 6.9545 31.9296 25.0327 45.0 71.7 6.06 264.0 0.225 0.0 59.0 6.9697 31.9536 25.0496 44.3 71.0 6.02 262.3 0.216 0.0 60.0 6.9761 31.9614 25.0549 44.1 70.1 6.00 261.4 0.209 0.0 61.0 6.9817 31.9685 25.0598 44.1 69.4 5.99 260.8 0.205 0.0 62.0 6.9934 31.9807 25.0678 43.9 68.8 5.97 260.1 0.195 0.0 63.0 6.9951 31.9894 25.0744 43.7 68.2 5.94 258.9 0.190 0.0 64.0 6.9958 31.9918 25.0762 43.6 68.2 5.92 257.9 0.193 0.0 65.0 6.9858 31.9986 25.0829 43.8 67.9 5.90 256.8 0.190 0.0 66.0 6.9846 32.0024 25.0861 43.8 67.9 5.88 256.2 0.191 0.0 67.0 6.9851 32.0070 25.0896 43.8 67.9 5.86 255.4 0.185 0.0 68.0 6.9866 32.0150 25.0957 43.8 68.1 5.85 254.8 0.189 0.0 69.0 6.9867 32.0245 25.1032 44.1 68.4 5.82 253.6 0.185 0.0 70.0 6.9848 32.0324 25.1096 44.1 68.5 5.80 252.5 0.184 0.0 71.0 6.9828 32.0361 25.1128 44.5 68.7 5.80 252.4 0.196 0.0 72.0 6.9833 32.0353 25.1121 44.7 69.1 5.79 252.2 0.191 0.0 73.0 6.9846 32.0428 25.1179 44.8 69.8 5.76 250.8 0.182 0.0 74.0 6.9849 32.0590 25.1306 45.0 70.0 5.71 248.7 0.182 0.0 75.0 6.9830 32.0776 25.1455 44.8 70.2 5.68 247.2 0.180 0.0 76.0 6.9824 32.0799 25.1474 44.8 70.4 5.66 246.4 0.180 0.0 77.0 6.9827 32.0814 25.1485 44.8 70.4 5.65 246.1 0.182 0.0 78.0 6.9833 32.0843 25.1507 44.5 70.0 5.65 246.0 0.183 0.0 79.0 6.9856 32.0902 25.1550 44.2 69.7 5.60 243.9 0.176 0.0 80.0 6.9895 32.1197 25.1777 43.2 69.2 5.52 240.3 0.174 0.0 81.0 6.9893 32.1498 25.2015 43.0 68.1 5.44 237.1 0.177 0.0 82.0 6.9886 32.1790 25.2245 43.4 67.5 5.37 233.9 0.174 0.0 83.0 6.9888 32.1933 25.2358 43.6 67.4 5.32 231.6 0.170 0.0 84.0 6.9893 32.2097 25.2486 43.3 67.9 5.30 230.6 0.168 0.0 85.0 6.9894 32.2077 25.2470 43.4 67.8 5.29 230.5 0.167 0.0 86.0 6.9896 32.2105 25.2492 43.3 67.8 5.27 229.3 0.168 0.0 86.9 6.9908 32.2220 25.2581 43.0 67.9 5.26 229.1 0.166 0.0 87.6 6.9911 32.2319 25.2659 42.9 66.8 5.22 227.5 0.166 0.0