*2022/11/21 14:38:45.35 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/02/10 03:58:07.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 24 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : F9A8D1 NUMBER OF CHANNELS : 11 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 56 79 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 200.4 500.7 5 Temperature:CTD deg_C_(ITS90) 4.8 7.4873 6 Salinity:CTD PSS-78 33.8707 34.0943 7 Sigma-t:CTD kg/m^3 26.4872 27.0056 8 Transmissivity:CTD %/m 61.1 61.9 9 Oxygen:Dissolved:CTD:Volume ml/l 0.72 3.09 10 Oxygen:Dissolved:CTD:Mass µmol/kg 31.2 134.2 11 Fluorescence:CTD:Seapoint mg/m^3 0.47E-01 0.65E-01 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 5 I I 0 2 -99 ' ' 5 I I 0 3 -99 ' ' 5 I I 0 4 -99 ' ' 7 F ' ' 1 5 -99 ' ' 9 F ' ' 4 6 -99 ' ' 9 F ' ' 4 7 -99 ' ' 9 F R4 4 8 -99 ' ' 6 F ' ' 1 9 -99 ' ' 7 F ' ' 2 10 -99 ' ' 6 F ' ' 1 11 -99 ' ' 8 F ' ' 3 $END *ADMINISTRATION MISSION : 2016-001 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 : P4 EVENT NUMBER : 17 LATITUDE : 48 38.94000 N ! (deg min) LONGITUDE : 126 40.01000 W ! (deg min) WATER DEPTH : 1328 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0585 LOCATION : Mid-ship ! custom item *COMMENTS Sample Number 75: Bottle Number 20 - bottom cap fouled. Analysis methods: ----------------- Salinity samples were collected in 200 ml type ll glass bottles with disposable nylon inserts and screw caps supplied by Ocean Scientific International Limited. They were analyzed in a temperature-controlled lab at IOS on a Guildline 8400B Salinometer (S/N 68572) standardized with IAPSO standard seawater 12 to 21 days after collection. For details on duplicate analysis see file 2016-001_SAL.pdf. 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 on duplicate analysis see file 2016-001_OXY.pdf. Nutrient samples were collected in plastic tubes. One set of samples was collected and immediately quick frozen in aluminum blocks stored in -20 freezer. Another set of samples from 400 dbar and deeper (to be used for silicate analysis) was collected and stored at 4C in the dark. All samples were returned to IOS for analysis using an Astoria analyzer following methods described in IOS Nutrient Methods (1996) Barwell-Clarke and Whitney. For precision and duplicate analysis see file 2016-001_NUT.pdf. Chlorophyll samples were filtered onto 25mm GF/F filters and stored in glass scintillation vials at -80C prior to analysis. Samples were extracted in 90% acetone at -20C for 24 hours and analyzed on a Turner 10AU fluorometer calibrated annually with commercially pure chlorophyll a standard (Sigma). Fluorescence readings taken before and after acidification were used to calculate chlorophyll and phaeopigment concentrations (Holm-Hansen et al 1965). Chlorophyll samples were analyzed at IOS ~7 weeks after the cruise. When duplicate samples were collected the average of two samples is reported. Variability is assessed as the CV (std dev / mean*100). Precision Statement: Chlorophyll values ranged from 0.04-1.14 mg/m^3. Average CV for this cruise was an excellent 2.82% with 1 out of 58 duplicate pairs having a CV > 15% and 0 out of 58 duplicate pairs having a CV > 50% . Our average dataset CV is 2.83% for 2013 - 2015 so the overall quality of this dataset is excellent. For details on duplicates see file 2016-001_CHL.pdf. Flags and comments apply to chlorophyll values only. No flags or comments are assigned for Phaeopigment values. DMS samples were collected in 250 ml ground glass stoppered bottles and stored in a fridge, in the dark and removed one at a time before analysis. A sample was loaded onto the stripper and purged with UHP Nitrogen for 10 minutes at ~100 ml/min. The DMS was extracted from the water and absorbed on to a Tenax TA trap kept at -80C. The trap was subsequently desorbed at 100C (with a Dewar containing boiling water) onto a Chromasorb 330 column which eluted onto a Flame Photometric Detector (FPD). All samples were run as soon as possible after being collected. The minimum detectable level for DMS is 0.10 nmol/l, so “0” values should be interpreted as < 0.1 nmol/l. For more details see file 2016-001_DMS_report.pdf and for duplicate analysis see 2016-001_DMS.pdf. DMSP-D: Approximately 20-75 ml of seawater were allowed to flow directly from the Niskin into a filtration funnel containing a 0.7 µm GF/F filter. The first 3.5 ml were collected in a polypropylene tube (15 ml) containing 50 µl of a 50% sulphuric acid solution. DMSP-T: 3.5 ml of seawater were collected directly from the Niskin into a polypropylene tube (15 ml) containing 50 µl of a 50% sulphuric acid solution. DMSP-D and DMSP-T: Samples were stored in the dark at 4 degrees C for a minimum of 24 hours. They were hydrolized and analyzed later at the Institute of Ocean Sciences. The minimum detectable level is 0.1 nmol/l, so “0” values should be interpreted as < 0.1 nmol/l. DMSP data are limited to 2 significant figures. For details on analysis see document 2016-001_DMS_report.pdf. Dissolved inorganic carbon (DIC) was determined using coulometric analysis of unfiltered samples. Total alkalinity (Alk) was determined by potentiometric titration. pH on the total hydrogen ion concentration scale was determined photometrically and is reported at 25C and surface pressure. For duplicates and precision of DIC, ALK and pH samples see files 2016-001_DIC.pdf, 2016-001_ALK.pdf, and 2016-001_pH.pdf respectively. HPLC samples were filtered onto 47mm GF/F filters and stored at -80C prior to analysis. Samples were extracted in 95% methanol at -20C for 24 hours and analyzed on a WATERS 2695 HPLC separations system as detailed in Nemcek and Pena, 2014. Analysis was performed ~3 months after collection. The average of two samples is reported. Variability is assessed as the CV (std dev/mean*100) for duplicate pairs. All pigments below the limit of detection (LOD) are assigned a zero value. TChl-a is the sum of Chl-a, DVchl-a, Chlide-a and Me-chlide. References: 1. 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. 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. 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. 5. Nemcek, N. and Peña, M.A. 2014. Institute of Ocean Sciences Protocols for Phytoplankton Pigment Analysis by HPLC. Can. Tech. Rep. Fish. Aquat. Sci. 3117: x + 80 p. Data Processing Notes: ---------------------- Transmissivity, Fluorescence and PAR data are nominal and unedited except that some records were removed in editing temperature and salinity. NOTE: While the Fluorescence:CTD 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. For details on how the transmissivity calibration parameters were calculated see the document Transmissivity_Calculation.pdf. NOTE: The transmissivity data were removed for files 2016-001-0002 and 2016-001-0005 because of poor data due to a cable problem. Oxygen:Dissolved:CTD was calibrated using the method described in the Sea-Bird Application Note #64-2 of June 2012 (Sea-Bird_64-2_Jun2012.pdf), except that a small offset in the fit was allowed. For details on the processing see the report: 2016-001-proc.pdf. $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 !-1-- -2-- -3-- --4--- ---5---- ---6---- ---7---- --8-- --9--- --10- ---11-- !Samp Bott Bott Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores !le_ le_ le:F re:CTD ure:CTD :CTD CTD missi :Disso n:Dis cence: !Numb Numb ~ng_ vity: lved: solve CTD: !er er Sequ CTD CTD: d:CTD Seapoin ! ence Volume :Mass t !---- ---- ---- ------ -------- -------- -------- ----- ------ ----- ------- *END OF HEADER 79 24 24 201.7 7.4873 33.8710 26.4874 61.2 3.08 134.0 0.048 78 23 23 200.4 7.4848 33.8712 26.4879 61.2 3.08 134.0 0.047 77 22 22 201.5 7.4861 33.8709 26.4875 61.1 3.08 134.0 0.057 76 21 21 202.8 7.4873 33.8707 26.4872 61.2 3.08 134.1 0.047 75 20 20 203.7 7.4861 33.8710 26.4876 61.2 3.09 134.2 0.049 74 19 19 203.8 7.4856 33.8710 26.4876 61.2 3.08 133.9 0.049 73 18 18 300.6 6.3424 33.9547 26.7088 61.3 2.09 91.0 0.050 72 17 17 302.4 6.3471 33.9548 26.7083 61.3 2.09 90.7 0.049 71 16 16 301.9 6.3487 33.9550 26.7082 61.2 2.09 90.8 0.051 70 15 15 300.3 6.3482 33.9551 26.7084 61.3 2.09 91.1 0.052 69 14 14 299.1 6.3492 33.9552 26.7083 61.3 2.09 90.8 0.051 68 13 13 299.3 6.3493 33.9551 26.7082 61.3 2.09 91.0 0.050 67 12 12 400.0 5.5502 33.9993 26.8431 61.3 1.40 61.0 0.055 66 11 11 400.8 5.5537 33.9988 26.8423 61.4 1.41 61.1 0.051 65 10 10 400.6 5.5574 33.9981 26.8413 61.4 1.41 61.3 0.050 64 9 9 399.7 5.5546 33.9987 26.8421 61.4 1.41 61.2 0.050 63 8 8 398.9 5.5527 33.9988 26.8424 61.3 1.41 61.4 0.049 62 7 7 399.3 5.5562 33.9980 26.8414 61.4 1.40 60.8 0.050 61 6 6 500.1 4.8007 34.0941 27.0054 61.8 0.72 31.2 0.059 60 5 5 500.1 4.8007 34.0941 27.0054 61.8 0.72 31.2 0.058 59 4 4 500.7 4.8001 34.0943 27.0056 61.7 0.72 31.2 0.056 58 3 3 500.3 4.8000 34.0942 27.0056 61.9 0.72 31.3 0.064 57 2 2 499.9 4.8007 34.0940 27.0053 61.8 0.72 31.3 0.065 56 1 1 499.7 4.8009 34.0939 27.0052 61.8 0.72 31.3 0.054