*2021/09/14 08:57:15.17 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2021/05/14 04:54:52.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 82 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : B7F6B142 NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Pressure:CTD dbar 3.1 83.6 2 Temperature:CTD deg_C_(ITS90) 6.6077 9.5927 3 Salinity:CTD PSS-78 25.6181 32.4714 4 Sigma-t:CTD kg/m^3 19.7242 25.5046 5 Transmissivity:CTD:650 %/m 24.8 57.9 6 Transmissivity:CTD:530 %/m 31.5 87.1 7 Oxygen:Dissolved:CTD:Volume ml/l 3.9 6.59 8 Oxygen:Dissolved:CTD:Mass µmol/kg 169.8 288.8 9 Fluorescence:CTD:Seapoint mg/m^3 0.134 0.813 10 PAR:CTD µE/m^2/sec 0 1.2 $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 : CH9 EVENT NUMBER : 109 LATITUDE : 54 30.22000 N ! (deg min) LONGITUDE : 130 40.54000 W ! (deg min) WATER DEPTH : 88 *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; salinity was cleaned very 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. 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 3.1 9.5927 25.6181 19.7242 42.2 55.8 6.59 288.8 0.757 1.2 4.0 7.9858 28.5601 22.2489 48.7 44.7 6.57 287.1 0.756 0.8 5.0 7.6837 28.9435 22.5899 51.4 53.7 6.53 285.4 0.764 0.5 6.0 7.7108 28.9818 22.6163 51.9 71.2 6.55 285.9 0.738 0.4 7.0 7.7169 29.1394 22.7392 52.6 73.9 6.56 286.3 0.792 0.3 8.0 7.6533 29.4180 22.9662 53.7 74.5 6.53 285.0 0.813 0.2 9.0 7.5566 29.6039 23.1250 54.6 76.8 6.46 282.2 0.694 0.2 10.0 7.4472 29.8364 23.3220 55.0 78.4 6.41 279.8 0.657 0.1 11.0 7.3908 29.9734 23.4371 55.9 79.9 6.39 278.6 0.605 0.1 12.0 7.3587 30.0720 23.5187 56.1 81.0 6.38 278.3 0.515 0.1 13.0 7.4000 30.1755 23.5946 56.3 82.2 6.39 278.6 0.467 0.0 14.0 7.4446 30.3147 23.6981 56.1 82.6 6.36 277.4 0.428 0.0 15.0 7.3125 30.4859 23.8501 56.8 83.4 6.33 276.0 0.384 0.0 16.0 7.2942 30.6170 23.9555 57.2 84.4 6.35 277.1 0.329 0.0 17.0 7.4065 30.7088 24.0127 57.3 85.1 6.41 279.7 0.311 0.0 18.0 7.4913 30.8586 24.1191 57.4 85.2 6.44 280.9 0.302 0.0 19.0 7.4554 30.8946 24.1522 57.1 85.3 6.46 281.6 0.282 0.0 20.0 7.4762 30.9424 24.1869 57.3 85.4 6.46 281.6 0.272 0.0 21.0 7.5058 30.9817 24.2138 57.4 85.6 6.46 281.5 0.266 0.0 22.0 7.5076 30.9999 24.2279 57.5 85.7 6.46 281.6 0.252 0.0 23.0 7.5091 31.0236 24.2463 57.5 85.8 6.49 282.8 0.244 0.0 24.0 7.5289 31.0462 24.2613 57.6 85.6 6.52 284.2 0.244 0.0 25.0 7.5868 31.0992 24.2951 57.7 86.0 6.54 285.1 0.247 0.0 26.0 7.5955 31.1070 24.3000 57.7 85.9 6.54 285.2 0.251 0.0 27.0 7.6035 31.1121 24.3029 57.7 86.5 6.53 284.6 0.247 0.0 28.0 7.6030 31.1331 24.3195 57.8 86.3 6.51 284.0 0.247 0.0 29.0 7.6152 31.1532 24.3336 57.7 86.6 6.51 284.1 0.241 0.0 30.0 7.6219 31.1726 24.3479 57.7 86.5 6.53 284.7 0.244 0.0 31.0 7.6195 31.1819 24.3556 57.7 86.4 6.54 285.2 0.244 0.0 32.0 7.6168 31.1907 24.3628 57.6 86.5 6.54 285.1 0.244 0.0 33.0 7.6114 31.1989 24.3700 57.8 86.4 6.51 283.9 0.244 0.0 34.0 7.6029 31.2396 24.4032 57.8 85.7 6.47 281.9 0.249 0.0 35.0 7.5640 31.2940 24.4512 57.8 85.9 6.44 280.9 0.222 0.0 36.0 7.5345 31.3148 24.4716 57.7 86.4 6.44 280.7 0.211 0.0 37.0 7.5194 31.3280 24.4840 57.8 86.7 6.43 280.2 0.208 0.0 38.0 7.5231 31.3484 24.4995 57.7 86.7 6.42 279.8 0.207 0.0 39.0 7.5266 31.3765 24.5211 57.9 86.6 6.41 279.3 0.221 0.0 40.0 7.5433 31.4018 24.5387 57.8 86.9 6.40 278.8 0.208 0.0 41.0 7.5159 31.4339 24.5677 57.8 86.8 6.37 277.7 0.199 0.0 42.0 7.4995 31.4533 24.5852 57.8 86.9 6.34 276.2 0.193 0.0 43.0 7.4799 31.4660 24.5978 57.9 87.0 6.28 273.9 0.195 0.0 44.0 7.4438 31.4819 24.6152 57.9 86.3 6.20 270.2 0.195 0.0 45.0 7.3467 31.5254 24.6625 57.8 87.1 6.08 265.1 0.180 0.0 46.0 7.2500 31.5623 24.7045 57.7 86.9 5.97 260.4 0.173 0.0 47.0 7.2229 31.5736 24.7171 57.7 86.6 5.89 256.9 0.171 0.0 48.0 7.1728 31.5959 24.7413 57.6 86.4 5.82 253.4 0.162 0.0 49.0 7.1351 31.6136 24.7602 57.3 85.9 5.74 250.2 0.159 0.0 50.0 7.1069 31.6285 24.7757 57.4 85.5 5.65 246.3 0.159 0.0 51.0 7.0396 31.6673 24.8151 57.0 85.8 5.53 240.8 0.159 0.0 52.0 6.9421 31.7264 24.8744 56.4 84.8 5.38 234.5 0.159 0.0 53.0 6.8927 31.7638 24.9103 56.4 84.3 5.29 230.4 0.153 0.0 54.0 6.8746 31.7825 24.9274 56.5 84.4 5.24 228.3 0.147 0.0 55.0 6.8726 31.7834 24.9283 56.6 84.7 5.23 227.7 0.147 0.0 56.0 6.8690 31.7869 24.9315 56.5 84.8 5.22 227.5 0.147 0.0 57.0 6.8659 31.7893 24.9338 56.5 84.8 5.21 227.0 0.147 0.0 58.0 6.8532 31.8044 24.9474 56.4 84.6 5.16 225.0 0.143 0.0 59.0 6.8274 31.8463 24.9837 55.6 84.4 5.11 222.5 0.146 0.0 60.0 6.8014 31.9082 25.0358 54.3 82.9 5.05 220.1 0.144 0.0 61.0 6.7953 31.9206 25.0464 54.2 81.6 5.03 219.3 0.146 0.0 62.0 6.7955 31.9207 25.0465 54.1 81.1 5.03 219.2 0.144 0.0 63.0 6.7954 31.9214 25.0470 54.2 80.4 5.03 219.2 0.137 0.0 64.0 6.7948 31.9227 25.0481 53.5 79.0 5.04 219.4 0.138 0.0 65.0 6.7950 31.9227 25.0481 54.3 80.2 5.04 219.5 0.147 0.0 66.0 6.7953 31.9222 25.0477 54.4 80.6 5.04 219.6 0.145 0.0 67.0 6.7936 31.9259 25.0508 54.4 80.6 5.04 219.5 0.152 0.0 68.0 6.7916 31.9311 25.0552 54.3 81.1 5.02 218.8 0.147 0.0 69.0 6.7867 31.9421 25.0645 54.1 80.9 4.97 216.5 0.143 0.0 70.0 6.7636 32.0039 25.1161 53.1 80.3 4.86 211.8 0.134 0.0 71.0 6.7435 32.0599 25.1628 51.2 78.9 4.72 205.4 0.134 0.0 72.0 6.7080 32.1572 25.2441 48.9 75.2 4.58 199.5 0.141 0.0 73.0 6.6956 32.1883 25.2702 48.8 71.8 4.49 195.5 0.148 0.0 74.0 6.6830 32.2252 25.3009 48.0 70.6 4.43 193.0 0.143 0.0 75.0 6.6792 32.2410 25.3138 46.8 69.5 4.39 191.4 0.146 0.0 76.0 6.6753 32.2548 25.3252 45.5 67.5 4.36 189.9 0.136 0.0 77.0 6.6681 32.2754 25.3424 45.0 65.0 4.33 188.6 0.138 0.0 78.0 6.6618 32.2914 25.3558 45.0 64.0 4.30 187.5 0.148 0.0 79.0 6.6581 32.3022 25.3648 44.8 64.1 4.28 186.5 0.134 0.0 80.0 6.6541 32.3182 25.3779 43.0 63.9 4.25 185.1 0.134 0.0 81.0 6.6524 32.3272 25.3852 41.2 60.8 4.20 183.0 0.138 0.0 82.0 6.6468 32.3534 25.4066 36.3 56.2 4.14 180.3 0.147 0.0 83.0 6.6364 32.3876 25.4349 32.1 46.9 4.12 179.4 0.147 0.0 83.6 6.6077 32.4714 25.5046 24.8 31.5 3.90 169.8 0.170 0.0