*2013/09/27 11:56:45.59 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 2010/08/24 02:04:13.000 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 : 86F11311 NUMBER OF CHANNELS : 22 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 277 300 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 5.5 3685.4 5 Temperature:CTD deg_C_(ITS90) 1.5714 15.1584 6 Salinity:Practical:CTD PSS-78 32.4632 34.668 7 Sigma-t:CTD kg/m^3 24.017 27.7638 8 Transmissivity:CTD %/m 50 62.1 9 Oxygen:Dissolved:CTD:Volume ml/l 0.28 6.63 10 Oxygen:Dissolved:CTD:Mass µmol/kg 12.2 288.7 11 Fluorescence:CTD:Seapoint mg/m^3 0.1E-01 2.444 12 PAR:CTD µE/m^2/sec 0 1.1 13 Salinity:Bottle PSS-78 32.4657 34.668 14 Flag:Salinity:Bottle n/a 15 Oxygen:Dissolved:Bottle:Volume ml/l 0.317 6.765 16 Flag:Oxygen:Dissolved:Bottle n/a 17 Nitrate_plus_Nitrite:Bottle µmol/l 2.1 46.1 18 Flag:Nitrate_plus_Nitrite:Bottle n/a 19 Phosphate:Bottle µmol/l 0.58 3.2 20 Flag:Phosphate:Bottle n/a 21 Silicate:Bottle µmol/l 4.3 178.6 22 Flag:Silicate:Bottle n/a $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 5 I I ' ' 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 ' ' 9 F ' ' 4 12 -99 ' ' 7 F ' ' 1 13 -99 ' ' 9 F R4 4 14 0 ' ' 3 NQ C ' ' 15 -99 ' ' 8 F R4 3 16 0 ' ' 3 NQ C ' ' 17 -99 ' ' 6 F R4 1 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 7 F R4 2 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' 6 F R4 1 22 0 ' ' 3 NQ C ' ' $END *ADMINISTRATION MISSION : 2010-14 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 : 55 LATITUDE : 49 16.92000 N ! (deg min) LONGITUDE : 134 39.96000 W ! (deg min) WATER DEPTH : 3636 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS Sample Number 287: Nitrate_plus_Nitrite:Bottle and Phosphate:Bottle - outliers in profiles. Sample Number 298: Bottle Number 22 - bottom seal leaking. Oxygen:Dissolved:Bottle outlier in COMPARE but most near-surface samples were outliers. Sample Number 300: Bottle Number 24 - vent open. Oxygen:Dissolved:Bottle outlier in COMPARE, but most near-surface samples were outliers. Analysis methods: ----------------------- Chlorophyll samples were filtered onto 25mm GF/F filters and stored in glass scintillation vials at -20C prior to analysis. Samples were extracted in 90% acetone for 24 hours and analyzed at sea on a Turner 10AU fluorometer which is calibrated annually with commercially pure chlorophyll a (Sigma). Fluorescence readings taken before and after acidification were used to calculate chlorophyll and phaeopigment concentrations (Holm-Hansen 1965). Chlorophyll and Phaeo-Pigments precision was determined by analyzing replicate samples drawn from one Niskin. For details see file 2010-14_CHL.pdf. Phaeopigment data are provided for information only and no quality flags are assigned to them. Oxygen samples were analyzed at sea using an automated Winkler titration system with modifications based on Carpenter (1965) and adhering to WOCE protocols (Culberson 1991). The titration system consists of a Brinkmann 665 Dosimat, a UV light source and a UV detector with a 365nm filter custom built by Scripps Institution of Oceanography. For details see file 2010-14_OXY.pdf Salinity samples were collected in glass bottles and analyzed at IOS on a Guildline model 8400B Autosal standardized with IAPSO standard seawater. For information on duplicates see file 2010-14_SAL.pdf. Nutrient samples were collected in plastic tubes. Most samples were analyzed frozen at IOS using an Astoria autoanalyzer following methods described in Barwell-Clarke and Whitney (1996). Deep silicate samples (400 dbar and below) were analyzed cool at IOS. For details on nutrient duplicates and precision see file 2010-14_NUT.pdf. NOTE: July 2013: A correction has been applied to Nitrate_plus_Nitrite:Bottle and Phosphate:Bottle data from deep-water cruises analyzed at IOS between 2009 and 2012. For details see the report: Corrections_to_Nitrate_and_Phosphate_Data_2009-2012.pdf. The minimum detectable level for DMS is 0.10 nM, so “0” values should be interpreted as <0.10. For details on the collection and analysis of the DMS data see file 2010-14_DMS_Report.pdf. For details on duplicates see 2010-14_DMS.pdf References: 1. Holm-Hansen, O., C. J. Lorenzen, R.W. Holmes and J.D.H. Strickland. 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., and R. T. Williams. 1991. A comparison of methods for the determination of dissolved oxygen in seawater. Report No. WHPO 91-2. WOCE Hydrographic Programme Office. Woods Hole Oceanographic Institution, Woods Hole, Mass. 4. Barwell-Clarke, J. and F. Whitney. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences, No. 182, 43 pp. --------------------------------------------------------------------- Fluorescence, Transmissivity and PAR data are nominal and unedited except that some records were removed in editing temperature and salinity. The quality of the Oxygen:Dissolved:CTD data is lower than usual for both sensors because recalibration was based on observations from very few casts, and the fits of bottles against CTD produced significantly different fits for some casts from others. Similar problems were found in sensor #1176 (CTD #0506) on some other 2010 cruises and appear to be associated with CTD communication problems. For Oxygen:Dissolved:CTD sensor #1438 values below 2200 dbar were replaced by pad values because there is evidence of significant hysteresis. ************************************************************************** In June 2011 it was discovered that the wrong information was used for recalibration of the Oxygen:Dissolved:CTD sensor. Sensor #1483 was actually used for this cruise, rather than sensor #1438 as originally recorded. The Oxygen:Dissolved:CTD channel was reprocessed after an initial study determined that the differences were significant. A new recalibration scheme was found by rerunning the bottle comparison. The files were then merged with all the other channels from the original processing. The hysteresis noted in the original processing remains, and the quality of the data is still considered of lower quality than usual. For details see the notes at the end of the processing report 2010-14-proc.pdf. --------------------------------------------------------------------- For details on the processing see processing report: 2010-14-proc.pdf. NOTE: July 2013: A correction has been applied to Nitrate_plus_Nitrite:Bottle and Phosphate:Bottle data from deep-water cruises analyzed at IOS between 2009 and 2012. For details see the report: Corrections_to_Nitrate_and_Phosphate_Data_2009-2012.pdf. $REMARKS Data quality is expressed with the following flags ---------------------------------------------------------------------------- 1 = Sample for this measurement was drawn from water bottle but not analyzed (not normally used). 2 = Acceptable measurement (not normally used). 3 = Questionable measurement (no problem observed in sampling or analysis, but value is not trusted, nonetheless; includes outlyers). 4 = Bad measurement (known problem with sampling or analysis, but not serious enough to completely discard the value). 5 = Not reported (lost sample; unredeemably bad measurement). 6 = Mean of replicate measurements. 7 = Manual chromatographic peak measurement. 8 = Irregular digital chromatographic peak integration. 9 = Sample not drawn for this measurement from this bottle (not normally used). ---------------------------------------------------------------------------- $END !-1-- 2- 3- --4--- ---5---- ---6---- ---7---- --8-- --9--- --10- ---11--- --12-- ---13--- 14 ---15-- 16 --17- 18 --19-- 20 --21- 22 !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluoresc PAR: Salinity Fl Oxygen: Fl Nitra Fl Phosph Fl Silic Fl !le_ tt tt re:CTD ure:CTD : CTD missi :Disso n:Dis ence: CTD :Bottle ag Dissolv ag te_pl ag ate: ag ate: ag !Numb ~u ~u Practica vity: lved: solve CTD: ~o ed: ~o ~Nitr ~o Bottle ~o Bottl ~o !er mb en l:CTD CTD CTD: d:CTD Seapoint tt Bottle: tt ite:B tt tt e tt ! er ce Volume :Mass le Volume le ottle le le le !---- -- -- ------ -------- -------- -------- ----- ------ ----- -------- ------ -------- -- ------- -- ----- -- ------ -- ----- -- *END OF HEADER 300 24 24 5.5 15.1584 32.4734 24.0170 50.0 5.87 256.1 2.2340 1.1 32.4733 6.061 4 2.1 0.58 4.5 299 23 23 11.4 15.1552 32.4734 24.0177 50.0 5.89 256.6 2.2300 0.6 32.4712 6.065 2.2 0.60 4.5 298 22 22 26.0 14.7748 32.4632 24.0915 50.6 5.92 258.1 2.4440 0.2 32.4657 6.135 4 2.1 0.58 4.3 297 21 21 50.8 8.5966 32.6839 25.3928 56.8 6.63 288.7 2.2730 0.0 32.6867 6.765 8.1 0.99 12.1 296 20 20 75.9 7.1617 32.7377 25.6411 60.3 6.56 285.7 0.7620 0.0 32.7454 6.679 11.0 6 1.13 6 13.6 6 295 19 19 101.4 6.7102 32.9754 25.8885 61.3 6.13 266.6 0.2210 0.0 32.9849 6.228 14.6 1.28 17.5 294 18 18 126.3 6.8104 33.5674 26.3418 61.5 5.24 227.8 0.1100 0.0 33.5792 5.332 6 20.0 1.50 26.6 293 17 17 151.1 6.6904 33.7876 26.5313 61.4 4.68 203.6 0.0790 0.0 33.7916 4.769 23.5 1.71 34.4 292 16 16 175.8 6.1680 33.8056 26.6135 61.4 4.34 188.5 0.0700 0.0 33.8063 4.440 26.4 1.91 41.0 291 15 15 202.0 5.7335 33.7997 26.6630 61.3 4.04 175.8 0.0630 0.0 33.8008 4.141 28.3 2.04 46.4 290 14 14 250.9 5.1365 33.8148 26.7458 61.3 3.31 144.0 0.0630 0.0 33.8163 3.399 32.2 2.29 57.3 289 13 13 301.7 4.7529 33.8537 26.8200 61.4 2.54 110.2 0.0650 0.0 33.8541 2.599 35.9 2.57 67.3 288 12 12 401.4 4.4174 33.9666 26.9462 61.7 1.51 65.8 0.0650 0.0 33.9659 1.576 40.8 6 2.86 6 83.9 6 287 11 11 601.1 3.8995 34.1390 27.1373 62.0 0.65 28.4 0.0720 0.0 34.1394 0.692 39.9 3 2.96 3 108.6 286 10 10 801.4 3.3927 34.2763 27.2965 62.0 0.37 16.2 0.0730 0.0 34.2765 0.400 6 43.7 3.18 128.8 285 9 9 1001.5 3.0689 34.3579 27.3920 62.0 0.28 12.2 0.0730 0.0 34.3577 0.322 45.6 3.19 140.9 284 8 8 1251.6 2.7073 34.4373 27.4878 62.0 0.29 12.5 0.0730 0.0 34.4377 0.317 46.1 3.20 153.4 283 7 7 1501.9 2.4085 34.4952 27.5597 62.1 0.47 20.4 0.0730 0.0 34.4938 0.490 46.0 3.19 161.9 282 6 6 2001.4 1.9738 34.5805 27.6634 62.1 1.17 51.0 0.0730 0.0 34.5803 1.210 43.9 3.09 171.7 281 5 5 2501.0 1.7132 34.6305 27.7236 62.1 -99.00 -99.0 0.0730 0.0 34.6299 1.944 41.7 6 2.95 6 174.1 6 280 4 4 3000.2 1.5938 34.6546 27.7518 62.1 -99.00 -99.0 0.0100 0.0 34.6529 2.457 40.5 2.84 174.3 279 3 3 3501.0 1.5714 34.6660 27.7626 61.8 -99.00 -99.0 0.0300 0.0 34.6636 2.700 6 39.6 2.79 176.5 278 2 2 3500.7 1.5714 34.6661 27.7627 61.8 -99.00 -99.0 0.0310 0.0 34.6652 6 2.696 39.4 2.78 176.6 277 1 1 3685.4 1.5772 34.6680 27.7638 61.0 -99.00 -99.0 0.0320 0.0 34.6680 2.740 39.6 2.78 178.6