*2021/06/10 08:46:54.07 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2021/02/14 03:12:40.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 16 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : 5A5C84CD NUMBER OF CHANNELS : 27 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 524 539 2 Bottle_Number n/a 1 16 3 Bottle:Firing_Sequence n/a 1 16 4 Pressure:CTD dbar 2 213.8 5 Temperature:CTD deg_C_(ITS90) 7.3843 8.2342 6 Salinity:CTD PSS-78 31.4814 32.5119 7 Sigma-t:CTD kg/m^3 24.6228 25.3817 8 Transmissivity:CTD:650 %/m 45.2 52 9 Transmissivity:CTD:530 %/m 64.9 76.8 10 Oxygen:Dissolved:CTD:Volume ml/l 2.84 5.27 11 Oxygen:Dissolved:CTD:Mass µmol/kg 123.6 229.5 12 Fluorescence:CTD:Seapoint mg/m^3 0.56E-01 0.67E-01 13 PAR:CTD µE/m^2/sec 0 0.6 14 Salinity:Bottle PSS-78 31.4823 32.3909 15 Flag:Salinity:Bottle n/a 16 Oxygen:Dissolved:Bottle:Volume ml/l 2.861 5.186 17 Oxygen:Dissolved:Bottle:Mass µmol/kg 124.6 226 18 Flag:Oxygen:Dissolved:Bottle n/a 19 Nitrate_plus_Nitrite:Bottle µmol/l 22.1 26.49 20 Flag:Nitrate_plus_Nitrite:Bottle n/a 21 Phosphate:Bottle µmol/l 1.773 2.175 22 Flag:Phosphate:Bottle n/a 23 Silicate:Bottle µmol/l 36.95 47.58 24 Flag:Silicate:Bottle n/a 25 Chlorophyll:Extracted:Bottle mg/m^3 0.2E-01 0.2E-01 26 Flag:Chlorophyll:Extracted:Bottle n/a 27 Phaeo-Pigment:Extracted:Bottle mg/m^3 0.4E-01 0.4E-01 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 5 I I 0 2 -99 ' ' 3 I I 0 3 -99 ' ' 3 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 ' ' 6 F ' ' 1 10 -99 ' ' 7 F ' ' 2 11 -99 ' ' 6 F ' ' 1 12 -99 ' ' 8 F ' ' 3 13 -99 ' ' 7 F ' ' 1 14 -99 ' ' ' ' F9.4 R4 ' ' 15 0 ' ' 3 NQ C ' ' 16 -99 ' ' ' ' F8.3 R4 ' ' 17 -99 ' ' 6 F ' ' 1 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 7 F R4 2 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' 8 F R4 3 22 0 ' ' 3 NQ C ' ' 23 -99 ' ' 7 F R4 2 24 0 ' ' 3 NQ C ' ' 25 -99 ' ' 7 F R4 2 26 0 ' ' 3 NQ C ' ' 27 -99 ' ' 7 F R4 2 $END *ADMINISTRATION MISSION : 2021-001 AGENCY : IOS, Ocean Science Division, Sidney, B.C. COUNTRY : Canada PROJECT : Line P SCIENTIST : Robert M. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : North-East Pacific STATION : Doug04 EVENT NUMBER : 128 LATITUDE : 53 55.55000 N ! (deg min) LONGITUDE : 128 42.39000 W ! (deg min) WATER DEPTH : 219 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0550 LOCATION : Mid-ship ! custom item *COMMENTS Samples Number 526 to 537: OXY:Bottle - a problem occurred with the analysis. The degree to which it may have affected the value is unclear. See Notes in Analysis Methods below. Sample Number 530: OXY:Bottle - replicate outliers. Sample Number 534: CHL:Bottle - %CV > 10. 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 on a Guildline 8400B Salinometer standardized with IAPSO standard seawater 13 - 29 days after collection. For details on duplicate analysis see file 2021-001_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 2021-001_OXY.pdf. NOTES: Events 106, 112, 117, 127 and 128: Suspected problem with the KI03 (Standard) exchange unit. A large jump in Thio normality resulted. Samples were run on the suspect stardard and blank titers (standardization occurred on 14 Feb 2021) despite an obvious problem. After swapping the KIO3 exchange unit (From #19 to #20) and testing, a stable Thio normality was measured that agreed well with previous runs. As a result, the values were re-calculated using the good known standardization run on 16 Feb 2021. This resulted in O2 corrections in the range of -0.001 to 0.006 ml/l across all 5 events that required recalculation. The values were flagged with a 3 to point to the fact the samples were affected. 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 2021-001_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 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 3 to 6 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). Flags and comments apply to chlorophyll values only. No flags or comments are assigned for Phaeopigment values. Chlorophyll values ranged from 0.01-0.82 ug/l in 135 samples. Average %CV for this cruise was 2.48% with 2 out of 29 duplicate pairs having a CV > 10% and 0 duplicate pairs having a CV > 30% . Our average dataset %CV is 3.83% for 2013 - 2020 so the overall quality of this dataset is good. For details on duplicates see file 2021-001_CHL.pdf. 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 Chromosil 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. DMS data are limited to 2 significant figures. Unless otherwise indicated the % relative difference between duplicates is < 20%. For more details see file 2021-001_DMS_report.pdf and for duplicate analysis see 2021-001_DMS.pdf. DMSP-D: Approximately 50-100 ml of seawater were drained from the Niskin into a magnetic filtration funnel containing a 0.7 µm GF/F filter. The first 3.5 ml were collected in a polypropylene tube containing 50 µl of a 50% sulphuric acid solution. A new funnel and filter were used for each sample. DMSP-T: 3.5 ml of seawater were collected directly from the Niskin into a polypropylene tube (15ml) 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 at the Institute of Ocean Sciences when time permitted. 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. Unless otherwise indicated the % relative difference between duplicates is < 20%. The workstation for the DMS instrument suffered a hard drive failure after P12. No subsequent samples were collected for DMS or DMSP. For more details see file 2021-001_DMS_report.pdf. 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. 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:650 refers to sensor #1185DR (650nm - red) Transmissometer:CTD:530 refers to sensor #1883DG (530nm - green) For comparison with other Institute of Ocean Sciences cruises, note that the transmissometer wavelength is 650 nm unless otherwise stated. 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 the processing see the report: 2021-001-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- ---12-- --13-- ---14--- 15 ---16-- --17- 18 --19-- 20 ---21-- 22 --23-- 24 --25-- 26 --27-- !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Trans Oxygen Oxyge Fluores PAR: Salinity Fl Oxygen: Oxyge Fl Nitrat Fl Phospha Fl Silica Fl Chloro Fl Phaeo- !le_ tt tt re:CTD ure:CTD :CTD CTD missi missi :Disso n:Dis cence: CTD :Bottle ag Dissolv n:Dis ag e_plus ag te: ag te: ag phyll: ag Pigmen !Numb ~u ~u vity: vity: lved: solve CTD: ~o ed: ~ed:B ~o _Nitri ~o Bottle ~o Bottle ~o Extrac ~o t:Extr !er mb en CTD: CTD: CTD: d:CTD Seapoin tt Bottle: ottle tt te: tt tt tt ted: tt acted: ! er ce 650 530 Volume :Mass t le Volume :Mass le Bottle le le le Bottle le Bottle !---- -- -- ------ -------- -------- -------- ----- ----- ------ ----- ------- ------ -------- -- ------- ----- -- ------ -- ------- -- ------ -- ------ -- ------ *END OF HEADER 539 16 16 2.0 7.3843 31.4814 24.6229 48.1 69.8 5.27 229.5 0.066 0.6 -99.0000 0 -99.000 -99.0 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 538 15 15 2.0 7.3864 31.4816 24.6228 48.0 69.9 5.26 229.1 0.065 0.5 31.4823 0 -99.000 -99.0 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 537 14 14 2.0 7.3867 31.4817 24.6228 48.1 69.9 5.26 229.2 0.064 0.6 -99.0000 0 5.186 226.0 3 22.33 0 1.779 0 38.27 0 0.02 0 0.04 536 13 13 4.9 7.4357 31.5046 24.6342 48.0 69.7 5.26 229.2 0.066 0.2 -99.0000 0 5.181 225.8 3 22.54 0 1.784 0 38.43 0 0.02 0 0.04 535 12 12 10.1 7.4466 31.5052 24.6331 48.5 70.7 5.25 229.0 0.067 0.0 -99.0000 0 5.177 225.6 3 22.39 0 1.795 0 38.03 0 0.02 0 0.04 534 11 11 20.3 7.6515 31.6107 24.6879 50.8 74.8 5.23 228.0 0.067 0.0 -99.0000 0 5.155 224.7 3 22.11 0 1.773 0 36.95 0 0.02 36 0.04 533 10 10 30.1 7.6946 31.6258 24.6938 50.8 75.0 5.19 226.3 0.067 0.0 -99.0000 0 5.108 222.6 3 22.10 0 1.787 0 38.27 0 0.02 0 0.04 532 9 9 50.3 7.7241 31.6658 24.7211 49.9 73.2 4.99 217.4 0.064 0.0 31.6645 0 -99.000 -99.0 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 531 8 8 50.3 7.7258 31.6663 24.7213 49.8 73.3 4.98 217.2 0.064 0.0 -99.0000 0 4.957 216.0 3 22.60 0 1.811 0 37.97 0 -99.00 0 -99.00 530 7 7 74.9 7.8514 31.7287 24.7526 49.4 72.5 4.70 204.7 0.065 0.0 -99.0000 0 4.562 198.8 36 23.00 0 1.820 0 38.50 0 -99.00 0 -99.00 529 6 6 100.1 8.2342 31.9120 24.8416 52.0 76.8 3.62 158.0 0.061 0.0 -99.0000 0 3.584 156.2 3 24.52 0 1.924 0 41.35 0 -99.00 0 -99.00 528 5 5 150.1 8.0736 32.0953 25.0086 49.3 71.5 3.06 133.4 0.061 0.0 -99.0000 0 3.031 132.1 3 25.92 6 2.042 6 44.30 6 -99.00 0 -99.00 527 4 4 200.2 7.9107 32.3568 25.2373 49.5 71.7 2.94 128.2 0.058 0.0 -99.0000 0 2.901 126.4 3 26.40 0 2.144 0 47.04 0 -99.00 0 -99.00 526 3 3 213.8 7.7531 32.5109 25.3807 45.2 64.9 2.84 123.7 0.056 0.0 -99.0000 0 2.861 124.6 3 26.49 0 2.175 0 47.58 0 -99.00 0 -99.00 525 2 2 213.8 7.7518 32.5119 25.3817 45.5 65.0 2.84 123.7 0.058 0.0 32.3909 0 -99.000 -99.0 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 524 1 1 213.8 7.7527 32.5110 25.3808 45.6 64.9 2.84 123.6 0.056 0.0 -99.0000 0 -99.000 -99.0 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00