*2013/10/15 10:33:06.17 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 2009/02/05 09:25:40.000 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 : 5FBB5959 NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 474 7491 2 Bottle_Number n/a 1 24 3 Pressure:CTD dbar 403.8 2998.8 4 Temperature:CTD deg_C_(ITS90) 1.575 3.9499 5 Salinity:Practical:CTD PSS-78 34.0071 34.6547 6 Sigma-t:CTD kg/m^3 27.0272 27.7533 7 Transmissivity:CTD %/m 61.7 62 8 Oxygen:Dissolved:CTD:Volume ml/l 0.36 2.5 9 Oxygen:Dissolved:CTD:Mass µmol/kg 15.7 108.7 10 Fluorescence:CTD:Seapoint mg/m^3 0.44E-01 0.6E-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 ' ' 7 F ' ' 1 4 -99 ' ' 9 F ' ' 4 5 -99 ' ' 9 F ' ' 4 6 -99 ' ' 9 F R4 4 7 -99 ' ' 6 F ' ' 1 8 -99 ' ' 7 F ' ' 2 9 -99 ' ' 6 F ' ' 1 10 -99 ' ' 8 F ' ' 3 $END *ADMINISTRATION MISSION : 2009-03 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 : P26 EVENT NUMBER : 48 LATITUDE : 49 59.83000 N ! (deg min) LONGITUDE : 145 0.38000 W ! (deg min) WATER DEPTH : 4220 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0550 *COMMENTS Analysis methods: ----------------- Chlorophyll samples were analyzed at sea using a Chemistry Turner Designs 10AU fluorometer which was calibrated in April 2008 using pure chlorophyll a. Chlorophyll precision was determined by analyzing replicate samples drawn from one Niskin. For details see file 2009-03_CHL.pdf. Oxygen samples were analyzed at sea using an automated titration system consisting of a Brinkman Dosimat (model 665) and a PC 950 Colorimeter. For details on precision see file 2009-03_OXY.pdf. ****************************************************************** Final Dissolved Oxygen data may not match those on rosette logs. Errors in endpoints were corrected based on manual inspection of titration curve data and DO values were then re-calculated. ****************************************************************** Salinity samples were collected in glass bottles and analyzed at IOS on a Guildline model 8400B Autosal standardized with IAPSO standard seawater. See file 2009-03_SAL.pdf for information on precision. Nutrient samples were collected in plastic tubes and analyzed fresh at sea using an Astoria-Pacific autoanalyzer following methods described in Barwell-Clarke and Whitney (1996). For details on nutrient duplicates and precision see file 2009-03_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 2009-03_DMS_report.pdf. For duplicates see 2009-03_DMS.pdf. References: 1. Carpenter, J.H. 1965. The Chesapeake Bay Institute Technique for the Winkler Dissolved Oxygen Method. Limmnol. & Oceanogr., 10: 141-143. 2. J. Barwell-Clarke and F. Whitney. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences, No. 182, 43 pp. ********************************************************************************** NOTE: There were a number of problems with the Oxygen:Dissolved:CTD sensors that limit the reliability of the data: For casts 0001 to 0040, the data below 1400 dbar are considered less reliable than usual. For casts 0042 and 0044 the Oxygen:Dissolved:CTD channel was removed. For casts 0046 to 0060 there was no bottle sampling so the Oxygen:Dissolved:CTD data were recalibrated based on an intercomparison with casts using a different sensor. ********************************************************************************** Transmissometer #1005DR was calibrated in March 2008, and drifted significantly but steadily until July 2009; then a sudden shift occurred, so that maximum values between September 2009 and July 2010 were very low, ~25%/m. In August 2010 a study was made of transmissivity that led to a decision to apply post-processing corrections to all cruises between March 2008 and June 2010. Transmissivity data from this cruise were corrected by multiplying the original values by a correction factor, which was based on assumptions that deep offshore transmissivity from a June 2009 cruise should be about 62%/m and that drift was linear with time between March 2008 and July 2009. The corrections produced reasonable results for all cruises in that time period. For details on how the correction factor was derived see: Transmissometer_1005DR_Corrections.pdf These data should be considered estimates. ****************************************************************************** For details on the processing see processing report: 2009-03-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-- !Samp Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores !le_ tt re:CTD ure:CTD : CTD missi :Disso n:Dis cence: !Numb ~u Practica vity: lved: solve CTD: !er mb l:CTD CTD CTD: d:CTD Seapoin ! er Volume :Mass t !---- -- ------ -------- -------- -------- ----- ------ ----- ------- *END OF HEADER 7491 19 800.6 3.2612 34.2895 27.3195 61.7 0.47 20.4 0.059 496 24 404.4 3.9494 34.0071 27.0272 61.7 1.04 45.1 0.059 495 23 403.8 3.9499 34.0072 27.0273 61.7 1.04 45.0 0.059 494 22 597.7 3.6260 34.1770 27.1948 61.8 0.54 23.3 0.060 493 21 597.1 3.6282 34.1762 27.1939 61.8 0.54 23.4 0.060 492 20 800.5 3.2614 34.2895 27.3195 61.7 0.47 20.4 0.059 491 18 1001.8 2.9294 34.3726 27.4164 61.7 0.41 17.6 0.059 490 17 1003.0 2.9288 34.3728 27.4166 61.7 0.41 17.7 0.058 489 16 1200.4 2.6570 34.4346 27.4900 61.8 0.36 15.8 0.058 488 15 1201.0 2.6561 34.4349 27.4903 61.8 0.36 15.7 0.058 487 14 1400.0 2.4309 34.4799 27.5456 61.8 0.49 21.3 0.057 486 13 1400.7 2.4297 34.4801 27.5459 61.8 0.49 21.3 0.057 485 12 1599.2 2.1980 34.5280 27.6034 61.8 0.76 32.9 0.054 484 11 1599.1 2.1976 34.5281 27.6035 61.8 0.76 32.9 0.054 483 10 1800.9 2.0485 34.5597 27.6408 61.9 1.03 44.6 0.053 482 9 1799.0 2.0498 34.5595 27.6405 61.9 1.02 44.4 0.053 481 8 1996.6 1.9368 34.5827 27.6680 61.9 1.29 56.2 0.051 480 7 1998.1 1.9359 34.5829 27.6683 61.9 1.29 56.2 0.050 479 6 2198.8 1.8354 34.6031 27.6923 61.9 1.56 67.6 0.049 478 5 2195.4 1.8368 34.6028 27.6919 61.9 1.56 67.9 0.049 477 4 2603.4 1.6721 34.6350 27.7303 62.0 2.08 90.2 0.045 476 3 2603.1 1.6723 34.6349 27.7302 61.9 2.08 90.2 0.046 475 2 2998.8 1.5750 34.6547 27.7533 62.0 2.50 108.7 0.044 474 1 2998.3 1.5756 34.6546 27.7532 62.0 2.50 108.7 0.044