*2013/10/07 12:51:28.39 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 2010/02/08 13:53:33.000 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 : C86A8561 NUMBER OF CHANNELS : 24 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 310 333 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 4.8 4026.4 5 Temperature:CTD deg_C_(ITS90) 1.5267 6.9151 6 Salinity:Practical:CTD PSS-78 32.4422 34.6734 7 Sigma-t:CTD kg/m^3 25.4443 27.771 8 Transmissivity:CTD %/m 52 55.6 9 Salinity:Bottle PSS-78 32.4478 34.6803 10 Flag:Salinity:Bottle n/a 11 Oxygen:Dissolved:Bottle:Volume ml/l 0.322 6.819 12 Flag:Oxygen:Dissolved:Bottle n/a 13 Nitrate_plus_Nitrite:Bottle µmol/l 10.8 45 14 Flag:Nitrate_plus_Nitrite:Bottle n/a 15 Phosphate:Bottle µmol/l 1.14 3.68 16 Flag:Phosphate:Bottle n/a 17 Silicate:Bottle µmol/l 15.4 174.6 18 Flag:Silicate:Bottle n/a 19 Carbon:Dissolved:Inorganic:Bottle µmol/kg 2028.42 2400.27 20 Flag:Carbon:Dissolved:Inorganic:Bottle n/a 21 Alkalinity:Total:Bottle µmol/kg 2187.1 2433.3 22 Flag:Alkalinity:Total:Bottle n/a 23 pH:Bottle n/a 7.2934 7.7979 24 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 ' ' 9 F R4 4 10 0 ' ' 3 NQ C ' ' 11 -99 ' ' 8 F R4 3 12 0 ' ' 3 NQ C ' ' 13 -99 ' ' 6 F R4 1 14 0 ' ' 3 NQ C ' ' 15 -99 ' ' 7 F R4 2 16 0 ' ' 3 NQ C ' ' 17 -99 ' ' 6 F R4 1 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 8 F R4 2 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' 8 F R4 2 22 0 ' ' 3 NQ C ' ' 23 -99 ' ' ' ' F9.4 R4 ' ' 24 0 ' ' 3 NQ C ' ' $END *ADMINISTRATION MISSION : 2010-01 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 : 34 LATITUDE : 49 33.98000 N ! (deg min) LONGITUDE : 138 40.00000 W ! (deg min) WATER DEPTH : 3942 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS The Oxygen:Dissolved:CTD data were removed from this cast due to poor comparison with bottles and with other casts at the same site. Samples Number 310 and 319: Salinity:Bottle - two samples were labelled 310 but only one is indicated on rosette sheet and Sample Number 319 is missing, so the first value 34.2798 was assigned to Sample Number 319 and looks right compared to Salinity:Practical:CTD. Samples Number 311 and 312: Alkalinity:Total:Bottle - different from replicate Niskin. Sample Number 318: Phosphate:Bottle - bad value; Carbon:Bottle - parameters inconsistent. Samples Number 321 and 328: Salinity:Bottle - outlier in COMPARE though Salinity:Practical:CTD is fairly noisy. Sample Number 322: Salinity:Bottle - outlier in COMPARE. Sample Number 326: Nutients:Bottle - probably drawn from wrong Niskin bottle. Analysis methods: ----------------- Chlorophyll and Phaeo-Pigments samples were analyzed at sea using a Chemistry Turner Designs 10AU fluorometer which was calibrated on May 12, 2009 using pure chlorophyll a. Chlorophyll and Phaeo-Pigments precision was determined by analyzing replicate samples drawn from one Niskin. For details see files 2010-01_CHL.pdf. 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 2010-01_OXY.pdf. Salinity samples were collected in glass bottles and analyzed at IOS on a Guildline model 8400B Autosal standardized with IAPSO standard seawater. See file 2010-01_SAL.pdf for information on precision. Nutrient samples were collected in plastic tubes and analyzed fresh at sea using an Astoria autoanalyzer following methods described in Barwell-Clarke and Whitney (1996). For details on nutrient duplicates and precision see file 2010-01_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 2010-01_DMS_Report.pdf. For details on duplicates see file 2010-01_DMS.pdf Dissolved inorganic carbon (DIC) was determined using coulometric analysis. Total alkalinity (Alk) was determined by potentiometric titration. pH on the total hydrogren 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 2010-01_DIC.pdf, 2010-01_ALK.pdf, and 2010-01_pH.pdf respectively. References: 1. Carpenter, J.H. 1965. The Chesapeake Bay Institute Technique for the Winkler Dissolved Oxygen Method. Limmnol. & Oceanogr., 10: 141-143. 2. Culberson C.H. (1991) Dissolved oxygen. In WOCE Operations Manual. Volume 3: The Observational Program. Section 3.1: WOCE Hydrographic Program. Part 3.1.3: WHP Operations and Methods. WHP Office Report WHPO 91-1 / WOCE Report No. 68/91. 3. 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. --------------------------------------------------------------------- Fluorescence data were removed because of severe problems with spikes and higher than usual values at depth suggesting problems with the cable. The data may be obtained from the chief scientist. ********************************************************************************** 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 correction factor 2.26, which was based on the assumption that deep offshore transmissivity should be about 62%/m. For details on the transmissometer post-processing see: Transmissometer_1005DR_Corrections.pdf These data should still be considered nominal. ********************************************************************************** For details on the processing see processing report: 2010-01-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 ---23--- 24 !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Salinity Fl Oxygen: Fl Nitra Fl Phosph Fl Silic Fl Carbon: Fl Alkalin Fl pH: Fl !le_ tt tt re:CTD ure:CTD : CTD missi :Bottle ag Dissolv ag te_pl ag ate: ag ate: ag Dissolv ag ity: ag Bottle ag !Numb ~u ~u Practica vity: ~o ed: ~o ~Nitr ~o Bottle ~o Bottl ~o ed:Inor ~o Total: ~o ~o !er mb en l:CTD CTD tt Bottle: tt ite:B tt tt e tt ganic: tt Bottle tt tt ! er ce le Volume le ottle le le le Bottle le le le !---- -- -- ------ -------- -------- -------- ----- -------- -- ------- -- ----- -- ------ -- ----- -- ------- -- ------- -- -------- -- *END OF HEADER 333 24 24 4.8 6.8876 32.4422 25.4451 52.0 32.4535 6.819 6 10.8 1.15 15.4 2028.80 2189.20 7.7968 332 23 23 10.3 6.8901 32.4423 25.4449 52.0 32.4478 6.807 10.8 1.14 15.4 2028.54 2187.10 7.7962 331 22 22 24.7 6.8976 32.4428 25.4443 52.0 32.4498 6.799 10.9 1.14 15.4 2028.42 2189.20 7.7979 330 21 21 51.2 6.9151 32.4518 25.4490 52.0 32.4582 6.793 10.9 1.15 15.4 2029.83 2196.20 7.7958 329 20 20 75.2 6.7339 32.5132 25.5212 54.0 32.5196 6.727 6 11.9 1.21 16.6 2037.03 2189.40 7.7811 6 328 19 19 100.1 5.5714 32.9743 26.0297 55.6 32.9916 3 6.261 18.0 1.53 25.1 2102.74 2220.00 7.6969 327 18 18 124.7 5.9673 33.5483 26.4355 55.6 33.5510 5.377 21.7 1.69 32.3 2140.29 2253.00 7.6504 326 17 17 150.1 5.9013 33.7179 26.5777 55.4 33.7290 4.786 27.2 4 2.07 4 46.9 4 2168.99 2258.80 7.6059 6 325 16 16 174.4 5.5351 33.7632 26.6581 55.4 33.7700 4.338 6 27.2 2.07 46.8 2196.08 2278.50 7.5620 324 15 15 200.1 5.1606 33.7750 26.7115 55.4 33.7808 3.877 29.5 2.23 53.4 2214.53 2282.70 7.5148 323 14 14 249.3 4.6940 33.8159 26.7965 55.6 33.8213 2.976 33.8 2.51 65.1 2245.87 2285.00 7.4369 322 13 13 300.3 4.3265 33.8641 26.8744 55.6 33.8783 3 2.200 37.4 2.77 76.6 2280.15 2290.40 7.3680 6 321 12 12 400.0 4.0818 33.9709 26.9849 55.6 33.9812 3 1.262 40.9 3.02 91.6 2311.20 2296.50 7.3080 320 11 11 600.9 3.7866 34.1589 27.1645 55.4 34.1637 0.637 42.7 3.16 113.2 2346.55 2324.60 7.2938 319 10 10 800.9 3.3397 34.2746 27.3002 54.9 34.2798 4 0.436 43.6 3.24 130.0 2359.46 2347.40 7.2934 318 9 9 1000.3 3.0032 34.3592 27.3990 54.7 34.3661 0.322 44.5 3.68 3 143.0 2382.09 3 2384.90 3 7.2991 3 317 8 8 1249.6 2.6309 34.4445 27.5002 54.5 34.4500 0.330 45.0 3.29 156.7 2398.69 2392.90 7.3071 316 7 7 1499.9 2.3523 34.5011 27.5691 54.2 34.5069 0.534 44.7 3.26 163.5 2400.27 2402.60 7.3291 315 6 6 2001.2 1.9429 34.5820 27.6670 53.6 34.5905 1.266 42.7 3.11 172.1 2389.35 2417.00 7.3952 314 5 5 2499.8 1.7249 34.6229 27.7166 53.1 34.6294 1.907 40.8 6 2.97 6 172.4 6 2372.04 2420.30 7.4535 313 4 4 3000.1 1.5812 34.6512 27.7500 52.7 34.6574 2.498 39.6 2.83 171.3 2366.98 2433.30 7.5023 312 3 3 3501.1 1.5267 34.6665 27.7663 52.4 34.6722 2.859 6 38.5 2.76 171.6 2354.97 2427.00 3 7.5345 6 311 2 2 3501.9 1.5267 34.6665 27.7663 52.4 34.6730 6 2.864 38.3 2.76 171.8 2353.56 6 2425.40 36 7.5352 310 1 1 4026.4 1.5389 34.6734 27.7710 52.0 34.6803 4 3.019 37.9 2.73 174.6 2342.57 2431.90 7.5523