*2023/01/12 08:13:44.43 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/06/06 22:50:17.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 8 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : 3E26A991 NUMBER OF CHANNELS : 29 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 46 53 2 Bottle_Number n/a 1 8 3 Bottle:Firing_Sequence n/a 1 8 4 Pressure:CTD dbar 4.6 108.5 5 Temperature:CTD deg_C_(ITS90) 7.2606 13.5767 6 Salinity:CTD PSS-78 31.7882 33.7915 7 Sigma-t:CTD kg/m^3 23.8182 26.4567 8 Transmissivity:CTD %/m 47.7 60.8 9 Oxygen:Dissolved:CTD:Volume ml/l 2.62 6.28 10 Oxygen:Dissolved:CTD:Mass µmol/kg 114.1 274 11 Fluorescence:CTD:Seapoint mg/m^3 0.106 1.672 12 PAR:CTD µE/m^2/sec 0 259.4 13 Salinity:Bottle PSS-78 31.792 31.792 14 Flag:Salinity:Bottle n/a 15 Oxygen:Dissolved:Bottle:Volume ml/l 2.613 6.299 16 Oxygen:Dissolved:Bottle:Mass µmol/kg 113.7 274.7 17 Flag:Oxygen:Dissolved:Bottle n/a 18 Nitrate_plus_Nitrite:Bottle µmol/l 0 30.64 19 Flag:Nitrate_plus_Nitrite:Bottle n/a 20 Phosphate:Bottle µmol/l 0.313 2.191 21 Flag:Phosphate:Bottle n/a 22 Silicate:Bottle µmol/l 1.56 46.88 23 Flag:Silicate:Bottle n/a 24 Carbon:Dissolved:Inorganic:Bottle µmol/kg 1953.2 2219.5 25 Flag:Carbon:Dissolved:Inorganic:Bottle n/a 26 Alkalinity:Total:Bottle µmol/kg 2131.6 2256.3 27 Flag:Alkalinity:Total:Bottle n/a 28 pH:Bottle n/a 7.4379 7.9121 29 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 ' ' 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 ' ' 7 F ' ' 2 10 -99 ' ' 6 F ' ' 1 11 -99 ' ' 8 F ' ' 3 12 -99 ' ' 7 F ' ' 1 13 -99 ' ' 9 F R4 3 14 0 ' ' 3 NQ C ' ' 15 -99 ' ' 8 F R4 3 16 -99 ' ' 6 F ' ' 1 17 0 ' ' 3 NQ C ' ' 18 -99 ' ' 7 F R4 2 19 0 ' ' 3 NQ C ' ' 20 -99 ' ' 8 F R4 3 21 0 ' ' 3 NQ C ' ' 22 -99 ' ' 7 F R4 2 23 0 ' ' 3 NQ C ' ' 24 -99 ' ' ' ' F7.1 R4 ' ' 25 0 ' ' 3 NQ C ' ' 26 -99 ' ' ' ' F7.1 R4 ' ' 27 0 ' ' 3 NQ C ' ' 28 -99 ' ' ' ' F8.4 R4 ' ' 29 0 ' ' 3 NQ C ' ' $END *ADMINISTRATION MISSION : 2016-006 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 : P2 EVENT NUMBER : 12 LATITUDE : 48 36.02000 N ! (deg min) LONGITUDE : 126 0.06000 W ! (deg min) WATER DEPTH : 117 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS CTDEDIT was used to clean Salinity:CTD very lightly. Sample Number 46: OXY:Bottle - replicate outliers. 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 9 to 28 days after collection. NOTE: The pooled standard deviation (0.002) is poorer than expected given the very reasonable length of time from sample collection to analysis. Values are reported to the third decimal place as a result. For details on duplicate analysis see file 2016-006_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 2016-006_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 2016-006_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 ~4 weeks afer 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 0.04-12.53 µg/l. Average CV for this cruise was 3.12% with 0 out of 59 duplicate pairs having a CV > 15% or a CV > 50%. Our average dataset CV is 2.83% for 2013 - 2015 so the overall quality of this dataset is excellent. Flags and comments apply to chlorophyll values only. For details on duplicates see file 2016-006_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 100 deg C (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 on analysis see file 2016-006_DMS_report.pdf and for duplicate analysis see 2016-006_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 (50%). DMSP-D and DMSP-T: Samples were stored in the dark at 4 deg 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 nM, so “0” values should be interpreted as <0.1 nM. For more details see file 2016-006_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 2016-006_DIC.pdf, 2016-006_ALK.pdf, and 2016-006_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 ~4-5 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 SeaBird Application Note #64-2, June 2012 revision, except that a small offset in the fit was allowed. 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: 2016-006-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-- 29 !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores PAR: Salinity Fl Oxygen: Oxyge Fl Nitrat Fl Phospha Fl Silica Fl Carbon Fl Alkali Fl pH: Fl !le_ tt tt re:CTD ure:CTD :CTD CTD missi :Disso n:Dis cence: CTD :Bottle ag Dissolv n:Dis ag e_plus ag te: ag te: ag :Disso ag nity: ag Bottle ag !Numb ~u ~u vity: lved: solve CTD: ~o ed: ~ed:B ~o _Nitri ~o Bottle ~o Bottle ~o ~:Inor ~o Total: ~o ~o !er mb en CTD CTD: d:CTD Seapoin tt Bottle: ottle tt te: tt tt tt ganic: tt Bottle tt tt ! er ce Volume :Mass t le Volume :Mass le Bottle le le le Bottle le le le !---- -- -- ------ -------- -------- -------- ----- ------ ----- ------- ------ -------- -- ------- ----- -- ------ -- ------- -- ------ -- ------ -- ------ -- ------- -- *END OF HEADER 53 8 8 4.6 13.5767 31.7882 23.8182 51.0 6.28 274.0 0.488 259.4 31.792 0 6.299 274.7 0 0.00 0 0.313 0 1.56 0 1953.2 0 2131.6 0 7.9121 0 52 7 7 9.8 13.4885 31.7902 23.8374 51.0 6.27 273.2 1.003 99.4 -99.000 0 6.290 274.3 0 0.22 0 0.332 0 1.85 0 1958.3 0 2137.0 0 7.9016 0 51 6 6 24.8 10.1277 32.4239 24.9458 47.7 5.38 234.1 1.672 11.7 -99.000 0 5.373 234.0 0 7.96 6 0.912 6 9.44 6 2042.1 0 2177.0 0 7.7407 0 50 5 5 49.8 8.3535 33.1681 25.8089 59.9 4.01 174.7 0.216 1.3 -99.000 0 4.009 174.5 0 21.36 0 1.598 0 26.68 0 2132.4 0 2213.8 0 7.5716 6 49 4 4 75.3 8.0245 33.4812 26.1034 60.7 3.65 158.8 0.113 0.2 -99.000 0 3.661 159.3 0 24.72 0 1.731 0 30.98 0 2161.2 0 2228.4 0 7.5387 0 48 3 3 75.1 8.0262 33.4806 26.1027 60.8 3.65 158.9 0.116 0.3 -99.000 0 3.654 159.0 0 24.72 0 1.832 0 31.05 0 2160.8 6 2232.2 6 7.5385 0 47 2 2 99.1 7.6798 33.6511 26.2870 57.0 3.02 131.2 0.113 0.0 -99.000 0 2.952 128.4 0 28.41 0 2.063 0 40.77 0 2193.8 0 2243.0 0 7.4720 0 46 1 1 108.5 7.2606 33.7915 26.4567 49.6 2.62 114.1 0.106 0.0 -99.000 0 2.613 113.7 36 30.64 0 2.191 0 46.88 0 2219.5 0 2256.3 0 7.4379 0