*2026/01/28 11:19:18.02 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/09/08 16:00:15.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 13 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : B53B3A76 NUMBER OF CHANNELS : 29 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------- --------------- -------------- -------------- 1 Bottle:Firing_Sequence n/a 1 13 2 Bottle_Number n/a 1 13 3 Pressure decibar 5.755 90.892 4 Depth metres 5.706 90.099 5 Temperature:Primary 'deg C (ITS90)' 7.6218 14.8354 6 Conductivity:Primary S/m 3.450668 3.941892 7 Salinity:T0:C0 PSS-78 31.9622 33.4911 8 Oxygen:Dissolved:SBE mL/L 1.675 6.832 9 Oxygen:Dissolved:SBE umol/kg 72.9 298.1 10 Fluorescence:URU:Wetlabs mg/m^3 0.99E-01 2.82 11 Transmissivity %/metre 38.5 56.7 12 Transmissivity:Green %/metre 55.7 88.1 13 Number_of_bin_records n/a 54 241 14 Sample_Number n/a 253 265 15 Oxygen:Dissolved mL/L 1.669 6.719 16 Oxygen:Dissolved umol/kg 72.66061 293.231 17 Flag:Oxygen:Dissolved n/a 18 Temperature:Draw 'deg C (ITS90)' 9.4 16.4 19 Chlorophyll:Extracted mg/m^3 0.21 5.89 20 Flag:Chlorophyll:Extracted n/a 21 Phaeo-Pigment:Extracted mg/m^3 0.35 0.63 22 Nitrate_plus_Nitrite umol/L 0.2E-01 32.94 23 Flag:Nitrate_plus_Nitrite n/a 24 Silicate umol/L 10.47 60.21 25 Flag:Silicate n/a 26 Phosphate umol/L 0.362 2.612 27 Flag:Phosphate n/a 28 Ammonium umol/L 0 1.12 29 Flag:Ammonium n/a $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 3 I I 0 2 -99 ' ' 3 I I 0 3 -99 ' ' 7 F ' ' 1 4 -99 ' ' 7 F ' ' 1 5 -99 ' ' 9 F ' ' 4 6 -99 ' ' 10 F ' ' 5 7 -99 ' ' 9 F R4 4 8 -99 ' ' 7 F ' ' 2 9 -99 ' ' 6 F ' ' 1 10 -99 ' ' 8 F ' ' 3 11 -99 ' ' 6 F ' ' 1 12 -99 ' ' 6 F ' ' 1 13 ' ' ' ' 5 I I 0 14 -99 ' ' 5 I I ' ' 15 -99 ' ' ' ' F8.3 R4 ' ' 16 -99 ' ' 6 F ' ' 1 17 0 ' ' 3 NQ C ' ' 18 -99 ' ' ' ' F6.1 R4 ' ' 19 -99 ' ' ' ' F7.2 R4 ' ' 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' ' ' F7.2 R4 ' ' 22 -99 ' ' ' ' F7.2 R4 ' ' 23 0 ' ' 3 NQ C ' ' 24 -99 ' ' ' ' F7.2 R4 ' ' 25 0 ' ' 3 NQ C ' ' 26 -99 ' ' ' ' F8.3 R4 ' ' 27 0 ' ' 3 NQ C ' ' 28 -99 ' ' ' ' F7.2 R4 ' ' 29 0 ' ' 3 NQ C ' ' $END $REMARKS This file converted from Sea-Bird file: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\BottleFiles\ROS files\2024-020-0078.ros $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 STATION : LG02 EVENT NUMBER : 78 LATITUDE : 49 18.77000 N ! (deg min) LONGITUDE : 126 38.17000 W ! (deg min) WATER DEPTH : 99 ALTIMETER (M) : 10.43 ! 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 Quality flags have the following significance: ---------------------------------------------------------------------------------- 0 = Acceptable measurement with no header comment 1 = Sample for this measurement was collected but not analyzed. Sample lost. 2 = Acceptable measurement with header comment 3 = Questionable measurement (Probably Good) 4 = Poor measurement (Probably Bad) 5 = Measurement not reported (Bad) 6 = Mean of replicate measurements 7 = Manual chromatographic peak measurement 8 = Irregular digital chromatographic peak integration 9 = Sample was planned for this measurement from this bottle but was not collected ---------------------------------------------------------------------------------- $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SBE_IOS 4.3 2026/01/19 11:14:55 2291 2291 CLEAN 5.3 2026/01/19 13:13:05 2291 2291 ADDSAMP 3.6 2026/01/21 11:32:33 2291 2291 BINAVE 4.2.1 2026/01/21 11:35:01 2291 13 MERGE 3.6 2026/01/26 09:44:37 13 13 CLEAN 5.3 2026/01/26 10:32:59 13 13 CALIB 12.1 2026/01/28 10:07:12 13 13 CALIB 12.1 2026/01/28 10:14:14 13 13 SORT 3.6 2026/01/28 10:44:52 13 13 REMOVECH 8.2 2026/01/28 10:53:46 13 13 CHGUNITS 3.2 2026/01/28 10:55:22 13 13 CHGUNITS 3.2 2026/01/28 10:56:36 13 13 REORDER 1.3.1 2026/01/28 11:04:48 ? ? HDREDIT2 3.2 2026/01/28 11:19:18 ? ? $END $REMARKS -CLEAN functions: 2026/01/19 13:12:59 20 Reset #RECS, MIN & MAX values in header. Insert Pad Values in Channel: Fluorescence:URU:Wetlabs:ECO-AFL [mg/m^3] where channel Fluorescence:URU:Wetlabs:ECO-AFL [mg/m^3] is in the range -10 t 0 data records in pad range. Set event to last 3 characters of file name -The following ADDSAMP parameters were used: Sample Number Lookup File: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\BottleFiles\ IOSShell\ADDSAMP.csv Bottle Channel Name: Bottle_Number [n/a] -The following BINAVE parameters were used: Bin channel = Bottle_Number 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. -The following MERGE parameters were used: 2026/01/26 09:44:37 Merge Channel: Bottle_Number Merge Scheme Used: 1: Interweave Records from Both Files Overlap Scheme Used: Keep Primary Primary Channels to Include: ALL Secondary Channels to Include: Sample_Number, Bottle:Position, Salinity:Bottle, Flag:Salinity:Bottle, Oxygen:Dissolved, Flag:Oxygen:Dissolved, Temperature:Draw, Chlorophyll:Extracted, Flag:Chlorophyll:Extracted, Phaeo-Pigment:Extracted, Nitrate_plus_Nitrite, Flag:Nitrate_plus_Nitrite, Silicate, Flag:Silicate, Phosphate, Flag:Phosphate, Ammonium, Flag:Ammonium Primary file : C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\BottleFiles\IOSShell\2024- 020-0078.samavg Secondary file: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\BottleFiles\IOSShell\2024- 020-0078.mrgcln1s Comments from secondary file: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\BottleFiles\IOSShell\2024-020-0078.mrgcln1s --------------------------------------------------------------------------- -SORT parameters: 2026/01/26 09:40:21 Sorted in ascending order of channel Bottle_Number -CLEAN functions: 2026/01/26 10:32:58 20 Change character data from " " to "0" in channels Flag:* Remove Sea-Bird comments from the header. -CALIB parameters: 2026/01/28 10:07:12 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\2024-020-recal-SIL.CCF Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 31 Silicate umol/L 120 0.9040000E+00 0.3000000E-02 0.2500000E+02 Salinity:T0:C0 -CALIB parameters: 2026/01/28 10:14:14 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 -- ----------------------------- --------- --- ----------------------------- 14 Salinity:T0:C0 PSS-78 10 -0.2000000E-03 0.1000000E+01 -SORT parameters: 2026/01/28 10:44:52 Sorted in ascending order of channel Pressure [decibar] -REMOVECH 2026/01/28 10:53:46 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] Salinity:T1:C1 [PSS-78] Flag -CHANGE units: Temperature reference channel: Temperature:Primary Salinity reference channel: Salinity:T0:C0 'Oxygen:Dissolved:SBE' changed from mL/L to umol/kg -CHANGE units: Temperature reference channel: Temperature:Draw Salinity reference channel: Salinity:T0:C0 'Oxygen:Dissolved' changed from mL/L to umol/kg -HEADER EDITS: 2026/01/28 11:19:18 Applied edit header: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\2024-020-bot-hdr.txt Channel 1: Bottle:Firing_Sequence [n/a] Name: Bottle_Number ==> Bottle:Firing_Sequence Channel 2: Bottle_Number [n/a] Name: Bottle:Position ==> Bottle_Number Channel 3: Pressure [decibar] Format: F10.3 ==> F7.1 Channel 4: Depth [metres] Name: Depth:Salt_Water ==> Depth Format: F10.3 ==> F7.1 Channel 6: Conductivity:Primary [S/m] Format: F11.6 ==> F10.5 Channel 11: Transmissivity [%/metre] Name: Transmissivity:1 ==> Transmissivity Channel 12: Transmissivity:Green [%/metre] Name: Transmissivity:2 ==> Transmissivity:Green Channel 10: Fluorescence:URU:Wetlabs [mg/m^3] Name: Fluorescence:URU:Wetlabs:ECO-AFL ==> Fluorescence:URU:Wetlabs Channel 8: Oxygen:Dissolved:SBE [mL/L] Format: F8.3 ==> F7.2 $END *COMMENTS Comments from secondary file: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\BottleFiles\IOSShell\2024-020-0078.mrgcln1s --------------------------------------------------------------------------- Comments from secondary file: C:\Users\BEDARDJ\Desktop\Data_Processing\CTD-2024-020\BottleFiles\IOSShell\2024-020-0078.chl --------------------------------------------------------------------------- Sample_Number 263: CHL: CV%>10 Analysis methods: ----------------- Oxygen samples were analyzed at sea using an automated Winkler titration System (Metrohm Dosimat model 876 and a UV light source and detector with a 365nm filter controlled by LV02_876 software designed and constructed by Scripps Institution of Oceanography) with modifications based on Carpenter (1965) and adhering to WOCE protocols (Culberson 1991). For details including a precision analysis, see document QF2024-020_OXY*.xlsx. Salinity samples were collected in 200 mL or 250 mL type II glass bottles with disposable nylon inserts and screw caps supplied by Ocean Scientific International Limited. They were analyzed in a temperature-controlled lab on a Guildline 8400B Salinometer standardized with IAPSO standard seawater within 27-36 days after collection. For details, see document QF 2024-020 SAL_*.xls. Nutrient samples were collected in plastic tubes and quick frozen in aluminum blocks stored in a -20C freezer. For samples 400m and deeper a second set of samples are collected and stored cool for silicate analysis. All samples were returned to the Institute of Ocean Sciences and they were analyzed using an Astoria-Pacific Analyzer following methods described in IOS Nutrient Methods (1996) Barwell-Clarke and Whitney. For details including a duplicate analysis, see document QF2024-020_NUTS*.xlsx. Chlorophyll samples were filtered onto 25mm GF/F filters after collection, and immediately frozen in liquid nitrogen and stored in a -80C freezer until analysis. All samples were returned to the Institute of Ocean Sciences and analyzed 1-6 months after collection on a Turner Trilogy7200-000 fluorometer, using methods described in Holm-Hansen et al. (1965). Fluorescence readings taken before and after sample acidification were used to calculate chlorophyll and phaeopigment concentrations. For further details on methodology, see document QF2024-020_CHL_*.xlsx Methodology sheet. Flags and comments apply to chlorophyll values only. No flags or comments are assigned for Phaeo-Pigment values The Ammonium method used at IOS is a modification of the fluorometric technique of Holmes et al., 1999. The method uses a single working reagent and minimizes contamination, can be applied to a large range of ammonium concentrations, and allows for samples to be processed quickly in the field. Samples are collected during the day into vials cleaned with working reagent, and stored in the Cold Room on the Tully. Working standards that bracket the expected sample concentrations are made up daily from seawater low in organic matter, collected on 2023-066, station P23, at 2005m. Samples and standards are spiked with working reagent at the same time, and allowed to incubate for 8-18 hours to maximize fluorescence signal and stability. The fluorescence is then read using a Turner Trilogy fluorometer in raw fluorescence mode. A linear calibration curve is generated from the standards, and the calibration equation then applied to sample fluorescence to determine sample concentration. For further details on methodology, see document QF 2024-020_NH4_*.xlsx All the CTD variables are averaged over the same pressures in order to have one line of data per sample. References: 1. Barwell-Clarke, J. and Whitney, F. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences, No. 182, 43 pp. 2. Carpenter, J.H. 1965. The Chesapeake Bay Institute Technique for the Winkler Dissolved Oxygen Method. Limmnol. & Oceanogr., 10: 141-143. 3. Culberson, C.H. 1991. Dissolved oxygen. WOCE Hydrographic Programme Operations and Methods (July 1991). 15pp. 4. Holm-Hansen, O., Lorenzen, C.J., Holmes, R.W., and Strickland J.D.H. 1965. Fluorometric Determination of Chlorophyll. J.du Cons. Intl. Pour l’Epl. De la Mer. 30:3-15. 5. Holmes, R.M., Aminot, A., Kerouel, R., Hooker, B.A., and Peterson, B.J. (1999) A simple and precise method for measuring ammonium in marine and freshwater ecosystems. Can. J. Fish. Aquat. Sci., 56 1801-1808. * For PDF versions of these papers see folder \\Cruise_Data\DOCUMENTS\Analysis Reference Papers --------------------------------------------------------------------------------- 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 SBE 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. 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 ! ---------------------- -------- ---- ------ ------------ Silicate umol/L 120 -99 (Salinity:T0:C0) (0.904 0.3E-02 25) 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- -13- -14- ---15-- --16- 17 --18- --19-- 20 --21-- --22-- 23 --24-- 25 ---26-- 27 --28-- 29 !Bo Bo Pressu Depth Temperat Conductiv Salinity Oxygen Oxyge Fluores Trans Trans Numb Samp Oxygen: Oxyge Fl Tempe Chloro Fl Phaeo- Nitrat Fl Silica Fl Phospha Fl Ammoni Fl !tt tt re ure: ity: :T0:C0 : n: cence: missi missi er_o le_ Dissolv n: ag ratur phyll: ag Pigmen e_ ag te ag te ag um ag !~u ~u Primary Primary Dissol Disso URU: vity vity: ~bin Numb ed Disso ~o e: Extrac ~a t: plus_ ~t ~i ~p ~o !en mb ved: lved: Wetlabs Green _rec er lved lv Draw ted ct Extrac Nitrit ri ca ha ni !ce er SBE SBE ords ed ed ted e te te te um !-- -- ------ ------ -------- --------- -------- ------ ----- ------- ----- ----- ---- ---- ------- ----- -- ----- ------ -- ------ ------ -- ------ -- ------- -- ------ -- *END OF HEADER 11 11 5.8 5.7 14.8324 3.94161 31.9622 6.83 298.1 2.820 38.5 55.7 74 263 -99.000 -99.0 0 -99.0 5.89 36 0.54 0.02 6 10.47 6 0.362 6 -99.00 0 12 12 5.8 5.7 14.8354 3.94189 31.9622 6.82 297.4 2.650 38.9 56.2 77 264 -99.000 -99.0 0 -99.0 -99.00 0 -99.00 -99.00 0 -99.00 0 -99.000 0 -99.00 0 13 13 5.9 5.8 14.8337 3.94179 31.9627 6.82 297.3 2.613 38.9 56.0 241 265 -99.000 -99.0 0 -99.0 -99.00 0 -99.00 -99.00 0 -99.00 0 -99.000 0 -99.00 0 10 10 6.0 6.0 14.8236 3.94106 31.9643 6.80 296.7 2.343 39.5 57.2 54 262 6.719 293.2 0 16.4 -99.00 0 -99.00 -99.00 0 -99.00 0 -99.000 0 0.00 6 8 8 10.5 10.5 12.1887 3.72621 32.1742 5.67 247.0 0.768 55.1 84.3 83 260 5.728 249.8 0 13.9 1.17 0 0.40 7.43 0 13.25 0 0.954 0 1.12 6 9 9 10.8 10.7 12.1342 3.72177 32.1783 5.64 246.0 0.637 54.9 84.1 241 261 -99.000 -99.0 0 -99.0 1.07 0 0.35 -99.00 0 -99.00 0 -99.000 0 -99.00 0 7 7 20.7 20.5 9.6754 3.53234 32.4651 4.41 192.3 0.718 54.9 84.2 241 259 4.296 187.2 0 11.2 1.27 6 0.53 19.57 0 26.64 0 1.748 0 0.93 6 6 6 20.7 20.5 9.6850 3.53309 32.4640 4.41 192.0 0.735 54.8 84.6 241 258 -99.000 -99.0 0 -99.0 -99.00 0 -99.00 -99.00 0 -99.00 0 -99.000 0 -99.00 0 5 5 30.4 30.1 8.9735 3.49521 32.7182 3.17 138.1 0.199 56.7 88.1 241 257 3.449 150.3 0 10.5 0.55 0 0.63 25.85 0 36.94 0 2.106 0 -99.00 0 4 4 49.8 49.3 8.2757 3.47383 33.1350 2.03 88.4 0.122 51.4 78.7 241 256 -99.000 -99.0 0 -99.0 -99.00 0 -99.00 -99.00 0 -99.00 0 -99.000 0 -99.00 0 3 3 50.0 49.6 8.2701 3.47416 33.1437 2.03 88.3 0.099 51.7 78.9 75 255 2.024 88.1 6 9.9 0.21 0 0.42 32.38 0 54.11 0 2.532 0 -99.00 0 2 2 75.6 75.0 7.6983 3.45187 33.4377 1.68 72.9 0.445 41.4 61.3 241 254 1.669 72.7 6 9.4 -99.00 0 -99.00 32.94 0 59.36 0 2.606 0 -99.00 0 1 1 90.9 90.1 7.6218 3.45067 33.4911 1.72 74.9 0.636 38.6 56.3 241 253 1.705 74.2 0 9.4 -99.00 0 -99.00 32.66 0 60.21 0 2.612 0 -99.00 0