*2026/01/28 14:23:35.51 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/09/05 09:40:52.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 29 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : 93E3F206 NUMBER OF CHANNELS : 12 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- -------------------------- --------------- -------------- -------------- 1 Pressure decibar 3 33 2 Depth metres 3.351 32.72 3 Temperature:Primary 'deg C (ITS90)' 9.874 11.3224 4 Conductivity:Primary S/m 3.534391 3.633188 5 Salinity:T0:C0 PSS-78 32.023 32.3026 6 Oxygen:Dissolved:SBE mL/L 3.571 4.912 7 Oxygen:Dissolved:SBE umol/kg 155.6113 214.1444 8 Fluorescence:URU:Wetlabs mg/m^3 0.859 2.821 9 Transmissivity %/metre 39.1 49.8 10 Transmissivity:Green %/metre 57.1 74.5 11 PAR uE/m^2/sec 0 0 12 Number_of_bin_records n/a 1 129 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F ' ' 1 2 -99 ' ' 7 F ' ' 1 3 -99 ' ' 9 F ' ' 4 4 -99 ' ' 10 F ' ' 5 5 -99 ' ' 9 F R4 4 6 -99 ' ' 7 F ' ' 2 7 -99 ' ' 6 F ' ' 1 8 -99 ' ' 8 F ' ' 3 9 -99 ' ' 6 F ' ' 1 10 -99 ' ' 6 F ' ' 1 11 -99 ' ' 7 F ' ' 1 12 ' ' ' ' 5 I I 0 $END $REMARKS This file converted from Sea-Bird file: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\CTD\SeaBird_Steps\5_DERIVE\2024-020-0002.cnv $END *ADMINISTRATION MISSION : 2024-020 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : La Perouse SCIENTIST : Sastri A. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : North-East Pacific EVENT NUMBER : 2 LATITUDE : 48 40.39000 N ! (deg min) LONGITUDE : 124 59.48000 W ! (deg min) ALTIMETER (M) : 5.03 ! custom item $REMARKS Altimeter value is distance from bottom and is calculated as the median of the deepest 2 metres of data. $END *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item $TABLE: SENSORS ! Name Abs Depth Serial No ! ----------------------------------- -------------- ---------- Temperature ' ' 2106 Conductivity ' ' 2754 'Pressure:Digiquartz with TC' ' ' 0443 Temperature:2 ' ' 5130 Conductivity:2 ' ' 1766 'Oxygen:SBE 43' ' ' 4372 Fluorometer:Seapoint ' ' 4186 Altimeter ' ' 76341 PAR/Irradiance:Biospherical/Licor ' ' 70613 'Fluorometer:WET Labs ECO-AFL/FL' ' ' FLRTD-2216 'Transmissometer:WET Labs C-Star' ' ' 1185DR 'Transmissometer:WET Labs C-Star:2' ' ' 1883DG $END $REMARKS Software Version Seasave V 7.26.7.121 $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SBE_IOS 4.3 2025/12/15 13:13:43 20793 20793 CLEAN 5.3 2025/12/15 13:22:20 20793 20793 SHIFTDAT 3.5.1 2026/01/05 11:08:23 20793 20793 DELETE 6.3 2026/01/05 11:45:03 20793 2358 CTDEDIT 5.5.1 2026/01/05 12:53:41 2358 2144 CALIB 12.1 2026/01/28 12:53:14 2144 2144 FILTERS 4.3 2026/01/28 13:09:00 2144 2144 FILTERS 4.3 2026/01/28 13:24:57 2144 2144 BINAVE 4.2.1 2026/01/28 13:33:25 2144 29 REMOVECH 8.2 2026/01/28 13:53:01 29 29 REMOVECH 8.2 2026/01/28 13:54:16 29 29 CHGUNITS 3.2 2026/01/28 13:56:30 29 29 REORDER 1.3.1 2026/01/28 13:59:04 ? ? HDREDIT2 3.2 2026/01/28 14:23:35 ? ? $END $REMARKS -CLEAN functions: 2025/12/15 13:22:20 Reset #RECS, MIN & MAX values in header. Set event to last 3 characters of file name -The following SHIFT parameters were used. Shift Channel: Fluorescence:URU:Seapoint # of Records to Advance (-ve for Delay): At REC# 0 Shift= 24.00 Salinity was recalculated after shift -The following DELETE parameters were used: Surface Record Removal: Last Press Min Maximum Surface Pressure (relative): 10.00 Surface Swell Pressure Tolerance: 1.00 Pressure filtered over width: 15 Swells deleted. Warning message if pressure difference of 2.00 Drop rates < 0.30m/s (calculated over 11 points) will be deleted. Drop rate applies in the range 10.00 to 23.68 dbars Sample interval (from FILE section of header) = 0.042 seconds. -CTDEDIT v5.5.1 2026/01/05 12:53:41 214 records were deleted in this editing session. 2144 changes in channel Fluorescence:URU:Wetlabs:ECO-AFL -CALIB parameters: 2026/01/28 12:53:14 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Salinity is computed Calibration file = C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\2024-020-recal1.ccf Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 19 Oxygen:Dissolved:SBE mL/L 10 -0.9900000E-02 0.1000100E+01 Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 17 Salinity:T0:C0 PSS-78 10 -0.2000000E-03 0.1000000E+01 -The following FILTER parameters were used. Median filter was used. Filter width = 11 The following channel(s) were filtered. Fluorescence:URU:Wetlabs:ECO-AFL -The following FILTER parameters were used. Median filter was used. Filter width = 11 The following channel(s) were filtered. Fluorescence:URU:Wetlabs:ECO-AFL -The following BINAVE parameters were used: Bin channel = Pressure [decibar] Averaging interval = 1.00 Minimum bin value = 0.000 Bin value was used Interpolated values were NOT used for empty bins Channel 'NUMBER_OF_BIN_RECORDS' was added to file. -REMOVECH 2026/01/28 13:53:01 The following CHANNEL(S) were removed: Scan_Number Temperature:Secondary [deg C (ITS90)] Conductivity:Secondary [S/m] Oxygen:Voltage:SBE [volts] Altimeter [metres] Status:Pump Descent_Rate [m/s] Fluorescence:URU:Seapoint [mg/m^3] Salinity:T1:C1 [PSS-78] Flag Prediction_Flag -REMOVECH 2026/01/28 13:54:16 The following CHANNEL(S) were removed: Descent_Rate [m/s] -CHANGE units: Temperature reference channel: Temperature:Primary Salinity reference channel: Salinity:T0:C0 'Oxygen:Dissolved:SBE' changed from mL/L to umol/kg -HEADER EDITS: 2026/01/28 14:23:35 Applied edit header: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\2024-020-hdr.txt Channel 1: Pressure [decibar] Format: F10.3 ==> F7.1 Channel 2: Depth [metres] Name: Depth:Salt_Water ==> Depth Format: F10.3 ==> F7.1 Channel 4: Conductivity:Primary [S/m] Format: F11.6 ==> F10.5 Channel 6: Oxygen:Dissolved:SBE [mL/L] Format: F8.3 ==> F7.2 Channel 9: Transmissivity [%/metre] Name: Transmissivity:1 ==> Transmissivity Channel 10: Transmissivity:Green [%/metre] Name: Transmissivity:2 ==> Transmissivity:Green Channel 8: Fluorescence:URU:Wetlabs [mg/m^3] Name: Fluorescence:URU:Wetlabs:ECO-AFL ==> Fluorescence:URU:Wetlabs Channel 11: PAR [uE/m^2/sec] Units: umol/m^2/sec ==> uE/m^2/sec Format: F11.3 ==> F7.1 $END *COMMENTS SBE HEADER Sea-Bird SBE 9 Data File: FileName = C:\CTD data\2024-020\2024-020-0002.hex Software Version Seasave V 7.26.7.121 Temperature SN = 2106 Conductivity SN = 2754 Number of Bytes Per Scan = 37 Number of Voltage Words = 4 Number of Scans Averaged by the Deck Unit = 1 System UpLoad Time = Sep 05 2024 09:40:52 NMEA Latitude = 48 40.39 N NMEA Longitude = 124 59.48 W NMEA UTC (Time) = Sep 05 2024 09:22:07 Store Lat/Lon Data = Append to Every Scan SBE 11plus V 5.1e number of scans to average = 1 pressure baud rate = 9600 NMEA baud rate = 4800 GPIB address = 1 advance primary conductivity 0.073 seconds advance secondary conductivity 0.073 seconds advance voltage 6 0.000 seconds advance voltage 7 0.000 seconds S> Tully: 2024-020 Station: Depth: System UTC = Sep 05 2024 09:40:52 # nquan = 21 # nvalues = 20793 # units = specified # name 0 = scan: Scan Count # name 1 = prDM: Pressure, Digiquartz [db] # name 2 = depSM: Depth [salt water, m] # name 3 = t090C: Temperature [ITS-90, deg C] # name 4 = t190C: Temperature, 2 [ITS-90, deg C] # name 5 = c0S/m: Conductivity [S/m] # name 6 = c1S/m: Conductivity, 2 [S/m] # name 7 = CStarTr0: Beam Transmission, WET Labs C-Star [%] # name 8 = sbeox0V: Oxygen raw, SBE 43 [V] # name 9 = altM: Altimeter [m] # name 10 = pumps: Pump Status # name 11 = dz/dtM: Descent Rate [m/s] # name 12 = flECO-AFL: Fluorescence, WET Labs ECO-AFL/FL [mg/m^3] # name 13 = CStarTr1: Beam Transmission, WET Labs C-Star, 2 [%] # name 14 = par: PAR/Irradiance, Biospherical/Licor # name 15 = flSP: Fluorescence, Seapoint # name 16 = sal00: Salinity, Practical [PSU] # name 17 = sal11: Salinity, Practical, 2 [PSU] # name 18 = sbeox0ML/L: Oxygen, SBE 43 [ml/l], WS = 2 # name 19 = dz/dtM: Descent Rate [m/s], WS = 2 # name 20 = flag: flag # span 0 = 1, 20793 # span 1 = 2.303, 33.677 # span 2 = 2.283, 33.389 # span 3 = 9.8156, 11.3353 # span 4 = 9.8246, 11.3333 # span 5 = 3.532062, 3.634099 # span 6 = 3.532268, 3.633908 # span 7 = 49.9553, 84.1325 # span 8 = 1.6154, 2.1038 # span 9 = 3.47, 35.90 # span 10 = 0, 1 # span 11 = -0.494, 0.412 # span 12 = 0.7174, 3.3401 # span 13 = 85.9406, 93.1249 # span 14 = 1.0000e-12, 9.0407e-02 # span 15 = 6.5934e-01, 5.4457e+00 # span 16 = 31.9315, 32.3322 # span 17 = 31.9210, 32.3250 # span 18 = 3.5260, 4.9495 # span 19 = -0.429, 0.403 # span 20 = 0.0000e+00, 0.0000e+00 # interval = seconds: 0.0416667 # start_time = Sep 05 2024 09:40:52 [System UTC, header] # bad_flag = -9.990e-29 # # # # # 2106 # 15-Feb-23 # 1 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.000 # 4.14692690e-003 # 6.30774382e-004 # 2.10717013e-005 # 2.11511943e-006 # 1000.000 # 1.00000000 # 0.0000 # # # # # # 2754 # 14-Feb-23 # 1 # # 0.0000 # 2000.0000 # 0 # # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.0 # -9.57000000e-008 # # # -1.06129987e+001 # 1.62039974e+000 # -3.87914662e-003 # 3.93074083e-004 # -9.57000000e-008 # 3.2500e-006 # # 0.00000000e+000 # # 1.00000000 # 0.00000 # # # # # # 0443 # 23-Mar-22 # -4.435292e+004 # -1.635794e-001 # 1.192740e-002 # 3.979900e-002 # 0.000000e+000 # 2.993627e+001 # -3.271008e-004 # 3.759160e-006 # 1.565300e-009 # 0.99982783 # -2.24792 # 0.000000e+000 # 1.282462e-002 # -8.599824e+000 # # # # # # 5130 # 18-Mar-23 # 1 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.000 # 4.36041069e-003 # 6.40314647e-004 # 2.15484838e-005 # 1.88531001e-006 # 1000.000 # 1.00000000 # 0.0000 # # # # # # 1766 # 18-Jan-23 # 1 # # 0.0000 # 2000.0000 # 0 # # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.00000000e+000 # 0.0 # -9.57000000e-008 # # # -4.12945799e+000 # 4.88701129e-001 # -7.05780608e-004 # 5.84314106e-005 # -9.57000000e-008 # 3.2500e-006 # # 0.00000000e+000 # # 1.00000000 # 0.00000 # # # # # # 4372 # 27-Mar-23 # 1 # # # 0.0000 # 0.0000e+000 # 0.0000 # 0.00e+000 # 0.0000 # 0.0 # # # # 5.2078e-001 # -0.5324 # -4.6090e-003 # 1.7376e-004 # -2.8493e-006 # 2.5826e+000 # 1.92634e-004 # -4.64803e-002 # 3.6000e-002 # 1.2400 #

-3.3000e-002

#

5.0000e+003

#

1.4500e+003

# # # # # # # 4186 # Aug 2023 # # 2 # 0.000 # # # # # # 76341 # 2021-02-10 # 15.000 # 0.000 # # # # # # 70613 # 2021-02-24 # 1.00000000 # 0.00000000 # 8620689655.17000010 # 1.00000000 # -0.11660000 # # # # # # FLRTD-2216 # 8-Mar-17 # 1.20000000e+001 # # 0.0440 # # # # # # # # # 1185DR # 2024-01-11 # 19.8801 # -1.1650 # 0.250 # # # # # # 1883DG # 2024-01-11 # 20.2896 # -0.0487 # 0.250 # # # # datcnv_date = Dec 15 2025 11:12:17, 7.26.7.129 [datcnv_vars = 16] # datcnv_in = C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\CTD\Raw CTD data\2024-020-0002.hex C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\CTD\2024-020-v1.XMLCON # datcnv_skipover = 0 # datcnv_ox_hysteresis_correction = yes # wildedit_date = Dec 15 2025 11:20:26, 7.26.7.129 # wildedit_in = C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\CTD\1_DATA CNV\2024-020-0002.cnv # wildedit_pass1_nstd = 2.0 # wildedit_pass2_nstd = 5.0 # wildedit_pass2_mindelta = 0.000e+000 # wildedit_npoint = 50 # wildedit_vars = prDM depSM t090C t190C c0S/m c1S/m flECO-AFL CStarTr1 par flSP # wildedit_excl_bad_scans = yes # alignctd_date = Dec 15 2025 11:22:45, 7.26.7.129 # alignctd_in = C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\CTD\2_WILD EDIT\2024-020-0002.cnv # alignctd_adv = sbeox0V 2.500 # celltm_date = Dec 15 2025 11:28:57, 7.26.7.129 # celltm_in = C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\CTD\3_ALIGNC TD\2024-020-0002.cnv # celltm_alpha = 0.0245, 0.0245 # celltm_tau = 9.5000, 9.5000 # celltm_temp_sensor_use_for_cond = primary, secondary # Derive_date = Dec 15 2025 11:42:52, 7.26.7.129 [derive_vars = 4] # Derive_in = C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\CTD\4_CELLTM \2024-020-0002.cnv C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\CTD\2024-020-v1.XMLCON # derive_time_window_docdt = seconds: 2 # derive_ox_tau_correction = yes # derive_time_window_dzdt = seconds: 2 # file_type = ascii END* Remarks from CTDEDIT: Removed a few shed wakes and where descent rate dropped below 0.2 m/s CTD Data Processing Notes: -------------------------- Conductivity, Transmissivity and Fluorescence are nominal and unedited except that some records were removed in editing temperature and salinity. NOTE: While the 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. There were 2 WetLabs CStar transmissometers in use during this cruise: Channel Transmissometer refers to sensor #1185DR (650nm - red) Channel Transmissometer:Green refers to sensor #1883DG (530nm - green) For comparison with other Institute of Ocean Sciences cruises, note that the transmissometer wavelength is 650nm unless otherwise stated. The SBE DO 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 DO gradients are large. To get an estimate of the accuracy of the SBE DO data during downcasts (after recalibration) a rough comparison was made between downcast SBE DO 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 SBE DO accuracy. Downcast (CTD files) Oxygen:Dissolved:SBE data for this cruise are considered, very roughly, to be: <0.08mL/L for pressure <200db <0.04mL/L for pressure between 200-300db <0.02mL/L for pressure >300db For details on the processing see the report: 2024-020_Processing_Report.doc. --------------------------------------------------------------------------------- *CALIBRATION $TABLE: CALCULATED CHANNELS ! Name Units Fmla Pad Coefficients ! ---------------- -------- ---- ------ ------------ Salinity:T0:C0 PSS-78 10 -99 () (-0.2E-03 1) $END $TABLE: CORRECTED CHANNELS ! Name Units Fmla Pad Coefficients ! ---------------------- ------ ---- ------ ------------ Oxygen:Dissolved:SBE mL/L 10 -99 () (-0.99E-02 1.0001) $END !--1--- --2--- ---3---- ----4---- ---5---- --6--- --7-- ---8--- --9-- --10- --11-- -12- !Pressu Depth Temperat Conductiv Salinity Oxygen Oxyge Fluores Trans Trans PAR Numb !re ure: ity: :T0:C0 : n: cence: missi missi er_o ! Primary Primary Dissol Disso URU: vity vity: ~bin ! ved: lved: Wetlabs Green _rec ! SBE SBE ords !------ ------ -------- --------- -------- ------ ----- ------- ----- ----- ------ ---- *END OF HEADER 3.0 3.4 11.3224 3.63319 32.0230 4.91 214.1 1.804 42.3 62.8 0.0 16 4.0 3.9 11.3159 3.63279 32.0237 4.88 212.5 1.944 42.0 62.0 0.0 89 5.0 5.0 11.1534 3.62020 32.0417 4.74 206.8 2.236 40.5 60.1 0.0 66 6.0 6.0 10.8542 3.59532 32.0568 4.65 202.6 2.821 39.1 57.4 0.0 27 7.0 6.9 10.7046 3.58287 32.0640 4.54 197.8 2.564 39.8 57.1 -99.0 75 8.0 7.9 10.5373 3.57039 32.0863 4.36 190.0 2.624 41.1 58.2 0.0 83 9.0 8.9 10.2842 3.55479 32.1531 3.96 172.7 1.978 44.9 62.5 0.0 12 10.0 9.7 10.0899 3.54222 32.1985 3.81 166.2 1.466 46.4 65.8 -99.0 43 11.0 11.2 10.0260 3.53825 32.2147 3.75 163.5 1.090 49.3 73.8 0.0 23 12.0 11.9 10.0027 3.53705 32.2230 3.73 162.7 1.047 49.4 74.0 0.0 71 13.0 12.9 9.9980 3.54098 32.2663 3.71 161.9 0.930 49.3 74.0 0.0 46 14.0 13.9 9.9792 3.54036 32.2767 3.69 160.8 0.960 49.5 74.1 0.0 53 15.0 14.7 9.9650 3.53974 32.2827 3.68 160.4 0.957 49.6 74.3 0.0 30 16.0 16.1 9.9540 3.53915 32.2859 3.67 159.9 0.943 49.7 74.4 0.0 37 17.0 16.9 9.9493 3.53876 32.2859 3.66 159.5 0.859 49.7 74.2 0.0 68 18.0 17.8 9.9451 3.53868 32.2883 3.66 159.5 0.870 49.7 74.4 0.0 56 19.0 18.7 9.9412 3.53851 32.2898 3.65 159.2 0.859 49.6 74.3 0.0 49 20.0 19.6 9.9437 3.53884 32.2904 3.65 158.9 0.872 49.7 74.4 0.0 9 21.0 20.4 9.9116 3.53594 32.2894 3.63 158.3 0.922 49.6 74.2 0.0 1 24.0 23.8 9.9023 3.53530 32.2898 3.61 157.4 0.979 49.7 74.5 0.0 122 25.0 24.9 9.9014 3.53531 32.2902 3.61 157.4 0.976 49.8 74.5 0.0 129 26.0 25.7 9.8969 3.53509 32.2917 3.60 156.8 0.954 49.5 74.2 0.0 93 27.0 26.9 9.8812 3.53439 32.2981 3.58 156.0 0.926 49.3 73.7 0.0 61 28.0 27.8 9.8905 3.53476 32.2930 3.59 156.5 0.951 49.5 74.1 0.0 65 29.0 28.8 9.8860 3.53462 32.2952 3.59 156.4 1.001 49.5 74.1 0.0 55 30.0 29.7 9.8878 3.53477 32.2948 3.59 156.3 0.950 49.4 73.9 0.0 129 31.0 30.7 9.8772 3.53444 32.3005 3.57 155.7 0.944 49.3 73.9 0.0 54 32.0 31.8 9.8740 3.53441 32.3026 3.57 155.7 0.923 49.2 73.7 0.0 85 33.0 32.7 9.8753 3.53449 32.3018 3.57 155.6 0.871 49.2 73.5 0.0 74