*2021/05/31 15:27:51.63 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2019/08/19 06:36:13.000 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 : CFF422CD NUMBER OF CHANNELS : 13 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 430 453 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 199.6 501.4 5 Temperature:CTD deg_C_(ITS90) 4.1613 6.143 6 Salinity:CTD PSS-78 33.8261 34.0505 7 Sigma-t:CTD kg/m^3 26.6329 27.0399 8 Transmissivity:CTD:650 %/m 56.8 57.5 9 Transmissivity:CTD:530 %/m 87.1 88.4 10 Oxygen:Dissolved:CTD:Volume ml/l 0.92 3.67 11 Oxygen:Dissolved:CTD:Mass µmol/kg 40.1 159.4 12 Fluorescence:CTD:Seapoint mg/m^3 0.106 0.122 13 PAR:CTD µE/m^2/sec 0 0 $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 $END *ADMINISTRATION MISSION : 2019-008 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 : P16 EVENT NUMBER : 57 LATITUDE : 49 16.97000 N ! (deg min) LONGITUDE : 134 39.91000 W ! (deg min) WATER DEPTH : 3624 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0506 LOCATION : Mid-ship ! custom item *COMMENTS 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 - 25 days after collection. For details on duplicate analysis see file 2019-008_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 2019-008_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 2019-008_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 ~2 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. Precision Statement: Chlorophyll values ranged from 0.03-10.66 µg/l in 115 samples. Average %CV for this cruise was 2.80% with 0 out of 35 duplicate pairs having a CV > 10% and 0 duplicate pairs having a CV > 30%. Our average dataset %CV is 3.80% for 2013 - 2018 so the overall quality of this dataset is excellent. For details on duplicates see file 2019-008_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 2019-008_DMS_report.pdf and for duplicate analysis see 2019-008_DMS.pdf. DMSP-D: Approximately 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 (15 ml) containing 50 µl of a 50% sulphuric acid solution. A new funnel and filter were used for each sample. Samples were hydrolized and run at IOS when time permitted. 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. Unless otherwise indicated the % relative difference between duplicates is < 20%. For more details see file 2019-008_DMS_report.pdf and for duplicate analysis see 2019-008_DMSP.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: 2019-008-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-- !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Trans Oxygen Oxyge Fluores PAR: !le_ tt tt re:CTD ure:CTD :CTD CTD missi missi :Disso n:Dis cence: CTD !Numb ~u ~u vity: vity: lved: solve CTD: !er mb en CTD: CTD: CTD: d:CTD Seapoin ! er ce 650 530 Volume :Mass t !---- -- -- ------ -------- -------- -------- ----- ----- ------ ----- ------- ------ *END OF HEADER 453 24 24 200.0 6.1430 33.8264 26.6331 56.9 87.2 3.66 159.3 0.122 0.0 452 23 23 200.0 6.1356 33.8267 26.6343 56.9 87.2 3.67 159.4 0.122 0.0 451 22 22 200.6 6.1428 33.8261 26.6329 56.9 87.2 3.66 159.1 0.122 0.0 450 21 21 199.6 6.1317 33.8266 26.6347 56.8 87.2 3.66 159.2 0.122 0.0 449 20 20 199.6 6.1277 33.8269 26.6354 56.9 87.2 3.66 159.2 0.122 0.0 448 19 19 200.1 6.1350 33.8264 26.6341 56.8 87.1 3.66 159.3 0.122 0.0 447 18 18 300.6 5.1694 33.8900 26.8016 57.1 87.5 2.20 95.7 0.119 0.0 446 17 17 300.6 5.1685 33.8901 26.8018 57.1 87.5 2.20 95.7 0.121 0.0 445 16 16 299.8 5.1685 33.8899 26.8016 57.1 87.5 2.21 95.9 0.121 0.0 444 15 15 300.3 5.1687 33.8900 26.8017 57.1 87.4 2.20 95.7 0.120 0.0 443 14 14 301.1 5.1680 33.8900 26.8018 57.1 87.5 2.20 95.7 0.116 0.0 442 13 13 300.5 5.1679 33.8900 26.8018 57.1 87.5 2.20 95.7 0.121 0.0 441 12 12 400.6 4.5167 33.9562 26.9272 57.3 88.0 1.54 67.0 0.111 0.0 440 11 11 401.0 4.5161 33.9566 26.9276 57.3 88.0 1.55 67.3 0.111 0.0 439 10 10 400.3 4.5174 33.9561 26.9271 57.3 88.0 1.55 67.4 0.113 0.0 438 9 9 400.5 4.5183 33.9559 26.9268 57.3 88.0 1.55 67.3 0.111 0.0 437 8 8 400.9 4.5182 33.9558 26.9268 57.3 87.8 1.54 67.2 0.110 0.0 436 7 7 400.8 4.5183 33.9560 26.9269 57.3 88.0 1.55 67.3 0.110 0.0 435 6 6 500.4 4.1621 34.0502 27.0396 57.5 88.2 0.92 40.2 0.107 0.0 434 5 5 500.5 4.1624 34.0501 27.0395 57.5 88.4 0.93 40.2 0.108 0.0 433 4 4 500.6 4.1613 34.0505 27.0399 57.5 88.4 0.93 40.3 0.107 0.0 432 3 3 499.4 4.1625 34.0501 27.0395 57.5 88.4 0.92 40.1 0.106 0.0 431 2 2 501.2 4.1627 34.0500 27.0394 57.5 88.4 0.92 40.1 0.109 0.0 430 1 1 501.4 4.1617 34.0503 27.0397 57.5 88.4 0.92 40.2 0.108 0.0