*2022/11/16 11:42:58.00 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2015/08/26 16:24:22.000 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 : 50AEC7E3 NUMBER OF CHANNELS : 28 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 642 665 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 5.1 4014.9 5 Temperature:CTD deg_C_(ITS90) 1.5378 15.8046 6 Salinity:CTD PSS-78 32.4217 34.6768 7 Sigma-t:CTD kg/m^3 23.8355 27.7732 8 Transmissivity:CTD %/m 55 64.9 9 Oxygen:Dissolved:CTD:Volume ml/l 0.35 6.76 10 Oxygen:Dissolved:CTD:Mass µmol/kg 15.1 294.5 11 Fluorescence:CTD:Seapoint mg/m^3 0.59E-01 1.792 12 Salinity:Bottle PSS-78 32.4256 34.6694 13 Flag:Salinity:Bottle n/a 14 Oxygen:Dissolved:Bottle:Volume ml/l 0.34 6.766 15 Oxygen:Dissolved:Bottle:Mass µmol/kg 14.8 294.7 16 Flag:Oxygen:Dissolved:Bottle n/a 17 Nitrate_plus_Nitrite:Bottle µmol/l 2.37 45.91 18 Flag:Nitrate_plus_Nitrite:Bottle n/a 19 Phosphate:Bottle µmol/l 0.527 3.224 20 Flag:Phosphate:Bottle n/a 21 Silicate:Bottle µmol/l 7.11 178.97 22 Flag:Silicate:Bottle n/a 23 Carbon:Dissolved:Inorganic:Bottle µmol/kg 1967.7 2393.1 24 Flag:Carbon:Dissolved:Inorganic:Bottle n/a 25 Alkalinity:Total:Bottle µmol/kg 2167.7 2428.8 26 Flag:Alkalinity:Total:Bottle n/a 27 pH:Bottle n/a 7.2876 7.9254 28 Flag:pH:Bottle n/a $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 12 -99 ' ' 9 F R4 4 13 0 ' ' 3 NQ C ' ' 14 -99 ' ' 8 F R4 3 15 -99 ' ' 6 F ' ' 1 16 0 ' ' 3 NQ C ' ' 17 -99 ' ' 7 F R4 2 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 8 F R4 3 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' 7 F R4 2 22 0 ' ' 3 NQ C ' ' 23 -99 ' ' ' ' F7.1 R4 ' ' 24 0 ' ' 3 NQ C ' ' 25 -99 ' ' ' ' F7.1 R4 ' ' 26 0 ' ' 3 NQ C ' ' 27 -99 ' ' ' ' F8.4 R4 ' ' 28 0 ' ' 3 NQ C ' ' $END *ADMINISTRATION MISSION : 2015-010 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 : P20 EVENT NUMBER : 79 LATITUDE : 49 34.01000 N ! (deg min) LONGITUDE : 138 40.04000 W ! (deg min) WATER DEPTH : 3963 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS Sample Number 645: ALK:Bottle - historically low outlier. Sample Number 649: pH:Bottle - value not reported. Sample Number 650: OXY:Bottle - replicate outliers. Sample Number 655: ALK:Bottle - low outlier and inconsistent with DIC:Bottle and pH:Bottle. 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 3 to 19 days after collection. For details on duplicate analysis see file 2015-010_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 2015-010_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 2015-010_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. When duplicate samples were collected the average of two samples is reported. Variability is assessed as the CV (std dev / mean*100). Chlorophyll values ranged from 0.03-20.58 µg/l. Precision Statement: Average CV for this cruise was a very good 3.81% with 3 out of 68 duplicate pairs having a CV > 15% and 0 out of 68 duplicate pairs having a CV > 50%. Our average dataset CV is 4% for 2013 - 2014 so the overall quality of this dataset is very good. For details on duplicates see file 2015-010_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 2015-010_DMS_report.pdf and for duplicate analysis see 2015-010_DMS.pdf. DMSP-D: 20-75 ml of seawater were allowed to flow directly 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. DMSP-T: 3.5 ml of seawater were collected directly from the Niskin into a polypropylene tube 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. For details on analysis see document 2015-010_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 2015-010_DIC.pdf, 2015-010_ALK.pdf, and 2015-010_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 6 to 8 weeks 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 Peńa, 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. For details on how the transmissivity calibration parameters were calculated see the document Transmissivity_Calculation.pdf. 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: 2015-010-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-- 28 !Samp Bott Bott Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores Salinity Fl Oxygen: Oxyge Fl Nitrat Fl Phospha Fl Silica Fl Carbon Fl Alkali Fl pH: Fl !le_ le_ le:F re:CTD ure:CTD :CTD CTD missi :Disso n:Dis cence: :Bottle ag Dissolv n:Dis ag e_plus ag te: ag te: ag :Disso ag nity: ag Bottle ag !Numb Numb ~ng_ vity: lved: solve CTD: ~o ed: ~ed:B ~o _Nitri ~o Bottle ~o Bottle ~o ~:Inor ~o Total: ~o ~o !er er Sequ CTD CTD: d:CTD Seapoin tt Bottle: ottle tt te: tt tt tt ganic: tt Bottle tt tt ! ence Volume :Mass t le Volume :Mass le Bottle le le le Bottle le le le !---- ---- ---- ------ -------- -------- -------- ----- ------ ----- ------- -------- -- ------- ----- -- ------ -- ------- -- ------ -- ------ -- ------ -- ------- -- *END OF HEADER 665 24 24 5.1 15.8028 32.4220 23.8360 55.1 5.89 257.0 0.679 32.4257 0 5.890 256.9 6 2.38 0 0.527 0 7.13 0 1970.6 0 2167.7 0 7.9208 0 664 23 23 11.0 15.8046 32.4219 23.8355 55.1 5.88 256.5 0.684 32.4274 0 5.883 256.6 0 2.37 0 0.528 0 7.12 0 1968.9 0 2183.6 0 7.9254 0 663 22 22 25.6 15.7970 32.4217 23.8370 55.0 5.88 256.6 1.115 32.4256 0 5.892 256.9 0 2.38 0 0.528 0 7.11 0 1967.7 0 2173.7 0 7.9219 0 662 21 21 51.4 9.0033 32.6400 25.2960 56.6 6.76 294.5 1.792 32.6429 0 6.766 294.7 0 7.05 6 0.884 6 8.96 6 2019.3 0 2196.6 0 7.8217 0 661 20 20 75.2 8.0261 32.7027 25.4921 62.1 6.39 278.2 0.530 32.7035 0 6.377 277.7 0 12.06 0 1.136 0 13.83 0 2047.2 0 2179.5 0 7.7614 0 660 19 19 101.3 7.6377 33.3119 26.0264 63.3 5.47 237.9 0.230 33.2999 0 5.479 238.5 0 17.24 0 1.340 0 19.90 0 2098.0 0 2227.9 0 7.6949 0 659 18 18 126.1 6.9168 33.7193 26.4471 63.8 4.80 208.9 0.112 33.7177 0 4.801 208.9 0 22.72 0 1.631 0 31.53 0 2151.8 0 2249.0 0 7.6327 0 658 17 17 150.4 6.5984 33.8072 26.5590 63.8 4.28 186.3 0.098 33.8041 0 4.318 187.8 0 25.61 0 1.817 0 38.58 0 2172.2 0 2264.8 0 7.5882 0 657 16 16 176.4 6.2199 33.8337 26.6291 63.4 3.86 167.7 0.092 33.8354 0 3.854 167.6 6 28.34 0 2.011 0 45.73 0 2196.1 0 2260.7 0 7.5444 0 656 15 15 201.6 5.8454 33.8317 26.6745 63.4 3.60 156.5 0.085 33.8331 0 3.607 156.9 0 30.08 0 2.133 0 50.58 0 2211.7 0 2275.3 0 7.5140 0 655 14 14 251.0 4.9722 33.8325 26.7786 63.9 2.97 129.0 0.075 33.8345 0 2.972 129.3 0 34.31 0 2.434 0 63.23 0 2243.5 0 2264.1 3 7.4382 6 654 13 13 302.5 4.4347 33.8556 26.8562 64.3 2.36 102.7 0.073 33.8584 0 2.373 103.2 0 37.80 0 2.662 0 73.79 0 2272.8 0 2277.7 0 7.3745 0 653 12 12 399.9 4.0640 33.9371 26.9598 64.6 1.59 69.2 0.063 33.9409 0 1.607 69.9 0 41.38 6 2.895 6 89.00 6 2303.1 0 2305.3 0 7.3192 0 652 11 11 600.8 3.8163 34.1303 27.1387 64.6 0.76 32.8 0.061 34.1278 0 0.779 33.9 0 43.83 0 3.080 0 110.46 0 2338.3 0 2330.7 0 7.2876 0 651 10 10 800.4 3.4322 34.2686 27.2866 64.7 0.53 22.9 0.061 34.2687 0 0.519 22.6 0 44.70 0 3.147 0 128.54 0 2362.8 0 2347.7 0 7.2918 0 650 9 9 1000.9 3.0403 34.3531 27.3907 64.7 0.41 17.8 0.061 34.3549 6 0.461 20.0 46 45.41 0 3.196 0 142.59 0 2379.9 0 2366.4 0 7.2930 0 649 8 8 1251.4 2.6945 34.4305 27.4835 64.7 0.35 15.1 0.059 34.4306 0 0.340 14.8 0 45.91 0 3.224 0 155.31 0 2393.1 0 2383.1 0 -99.0000 1 648 7 7 1500.3 2.3936 34.4923 27.5586 64.7 0.47 20.5 0.059 34.4939 0 0.483 21.0 0 45.69 0 3.187 0 165.16 0 2391.0 0 2396.0 0 7.3153 0 647 6 6 1999.4 1.9800 34.5764 27.6596 64.7 1.18 51.3 0.059 34.5765 6 1.177 51.1 0 44.15 0 3.051 0 173.91 0 2387.8 0 2410.7 0 7.3772 0 646 5 5 2501.2 1.7494 34.6230 27.7148 64.9 1.84 80.1 0.060 34.6221 0 1.845 80.2 6 42.11 0 2.911 0 175.51 0 2366.7 0 2427.7 0 7.4422 0 645 4 4 3000.0 1.6064 34.6514 27.7483 64.9 2.42 104.9 0.060 34.6516 6 2.412 104.8 0 40.44 0 2.792 0 175.24 0 2358.6 0 2418.7 3 7.4920 0 644 3 3 3500.2 1.5379 34.6687 27.7673 64.9 2.82 122.4 0.060 34.6694 0 2.844 123.6 0 39.27 0 2.708 0 175.32 0 2355.8 0 2428.8 0 7.5302 6 643 2 2 3499.8 1.5378 34.6688 27.7673 64.9 2.82 122.6 0.061 34.6682 0 2.821 122.6 0 39.33 0 2.705 0 175.38 0 2356.6 6 2428.6 6 7.5274 0 642 1 1 4014.9 1.5448 34.6768 27.7732 64.3 2.97 129.1 0.059 -99.0000 0 2.994 130.1 0 38.89 0 2.672 0 178.97 0 2337.5 0 2422.3 0 7.5447 0