*2019/05/30 16:39:23.11 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2019/04/07 22:01:00.539 NUMBER OF RECORDS : 3 DATA DESCRIPTION : Bottle:Wire:Up:Stop FILE TYPE : ASCII NUMBER OF CHANNELS : 20 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- --------------- -------------- -------------- 1 Bottle_Number n/a 5 7 2 Pressure decibar 2.6 91.2 3 Temperature 'deg C (ITS90)' -1.7348 -1.6403 4 Conductivity mS/cm 25.2351 25.7422 5 Salinity PSS-78 31.7538 32.3129 6 Oxygen:Dissolved:Rinko mL/L 7.47 8.11 7 Oxygen:Dissolved:Saturation:Rinko % 87.59 94.57 8 Fluorescensce:URU:Turner mg/m^3 0.2406 0.8736 9 Salinity:Bottle PSS-78 31.83 32.315 10 Flag:Salinity:Bottle n/a 11 Nitrate_plus_Nitrite umol/L 5.47 8.65 12 Flag:Nitrate_plus_Nitrite n/a 13 Silicate umol/L 11.82 18.81 14 Flag:Silicate n/a 15 Phosphate umol/L 1.101 1.307 16 Flag:Phosphate n/a 17 Carbon:Dissolved:Inorganic umol/kg 2155.04 2202.62 18 Flag:Carbon:Dissolved:Inorganic n/a 19 Alkalinity:Total umol/kg 2251.59 2375.61 20 Flag:Alkalinity:Total n/a $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' ' ' I4 I ' ' 2 -99 ' ' ' ' F7.1 R4 ' ' 3 -99 ' ' ' ' F9.4 R4 ' ' 4 -99 ' ' ' ' F9.4 R4 ' ' 5 -99 ' ' ' ' F9.4 R4 ' ' 6 -99 ' ' ' ' F7.2 R4 ' ' 7 -99 ' ' ' ' F8.2 R4 ' ' 8 -99 ' ' ' ' F8.3 R4 ' ' 9 -99 ' ' ' ' F9.4 R4 ' ' 10 ' ' ' ' 4 NQ C ' ' 11 -99 ' ' ' ' F7.2 R4 ' ' 12 ' ' ' ' 4 NQ C ' ' 13 -99 ' ' ' ' F7.2 R4 ' ' 14 ' ' ' ' 4 NQ C ' ' 15 -99 ' ' ' ' F8.3 R4 ' ' 16 ' ' ' ' 4 NQ C ' ' 17 -99 ' ' ' ' F8.2 R4 ' ' 18 ' ' ' ' 4 NQ C ' ' 19 -99 ' ' ' ' F8.2 R4 ' ' 20 ' ' ' ' 4 NQ C ' ' $END $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 *ADMINISTRATION MISSION : 2019-031 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : Canadian Ranger Ocean Watch (CROW) SCIENTIST : Dempsey M. PLATFORM : Snowmobile *LOCATION GEOGRAPHIC AREA : Canadian Arctic Archipelago STATION : BPT_HC2-Cst21 EVENT NUMBER : 24 LATITUDE : 69 42.65200 N ! (deg min) LONGITUDE : 123 38.32700 W ! (deg min) WATER DEPTH : 96.6 $REMARKS Water Depth is cast depth plus 5m. Standard operation is to lower the CTD full ocean depth until the weight, 5m below the CTD, touches bottom. $END *INSTRUMENT TYPE : RBR CTD MODEL : Concerto SERIAL NUMBER : 65639 $TABLE: SENSORS ! Name Serial No ! --------------------------------------------------- ---------- 'Temperature: RBR Concerto' 65639 'Conductivity: RBR Concerto' 65639 'Oxygen:JFEAdvantechRinkoIII TypeB foil' 259 'Fluorometer: Turner Design: Cyclops' 21100322 $END $REMARKS CTD configured to output percent oxygen saturation instead of volts. See COMMENTS section below for sensor configuration and calibration dates. $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------- ------ ---------- -------- --------- --------- SPRD2IS 5.2 2019/05/30 16:39:23 3 3 $END *COMMENTS Program Summary There were three components to this program. Leg 1, Mike Dempsey and Chris Clarke went to Cambridge Bay and Kugluktuk, traveling from March 5th to March 16th, 2019. Leg 2 Mike Dempsey and Jane Eert went to Paulatuk from April 1 to April 10th, 2019. On these trips the participants met with Rangers for training and discussion of the program in anticipation of the Ranger’s upcoming patrol exercises. CTD casts were collected in each community. The Kugluktuk patrol went out to Dolphin and Union Strait two months later and collected data. For more information see the cruise report: CROW 2019 Report final v2019-10-23.docx The data processing steps are discussed below. 5-11 March 2019 Cambridge Bay Stations 1 to 13 11-16 March 2019 Kugluktuk Stations 14 to 16 1-10 April 2019 Paulatuk Stations 17 to 24 7 May 2019 Kugluktuk Patrol in Dolphin and Union St. Stn 25 to 27 Paulatuk CTD Data There are 8 stations, all with 3 or more casts per station in 2 data sets: 5 Apr 2019 Paulatuk, South West Darnley Bay 6 stations 065541_20190405_2348.rsk 7 Apr 2019 Paulatuk, Darnley Bay 2 stations 065639_20190408_0132.rsk Both stations on 7 April have water samples Meta data are recorded in: CROW 2019 log_2019-04-08.xlsx Comments The first CTD used had problems with external channels and there are no good oxygen and chlorophyll data for stations 1 to 6. The next field-day used a different CTD with different external sensors. The second CTD had a few dropouts with these external channels at the start of the first cast, but as there were 3 or more casts per station, there was no problem in choosing a good cast without dropouts. Equipment RBR Concerto 65541 w/ 6Hz sampling rate Calibration Dates 12 Mar 2018, Jan2013 (new) w/ Turner Cyclops Fluorometer sensor #21100027 Fluorometer set for 0 to 5 ug/l range Calibration Dates 15 Feb 2018 (3-pt check, IOS), Feb 2017 (new) w/ JFE Advantech RINKO III Oxygen sensor #9 Type- Afoil, Reporting in % Saturation Calibration Dates 04-Apr-2019 (2pt cal, in field), 01 Jun 2009 (new) RBR Concerto 65639 w/ 6Hz sampling rate Calibration Dates 27 Mar 2018, Mar2014 (new) w/ Turner Cyclops Fluorometer sensor #21100322 Fluorometer set for 0 to 5 ug/l range Calibration Dates 15 Feb 2018 (3-pt check, IOS), May 2017 (new) w/ JFE Advantech RINKO III Oxygen sensor #259 Type-B foil, Reporting in Volts Calibration Dates 1 Mar 2018 (2pt cal, IOS), 24 May 2016 (new), 09 Apr 2019 (2pt-cal, field) confirmed the current values were good w/in 2% Air thermometer SN Ice Auger# SN Downrigger# SN Kit # SN Data Collection Method Follow protocol laid out in Ranger science manual ver7 2015.doc Changes to protocol: Added water sample collection by hanging one Niskin on the line and closing with a messenger. Performed 3 casts per station instead of 2. Processing Calibration issues RINKO III SN9 had a 2-pt oxygen calibration done in Paulatuk prior to data collection. New G and H terms are: -3.530317,1.032586 (RSK terms C0 and C1) However, there was some failure with this system and no oxygen data were collected. RINKO III SN259 also had a 2-pt oxygen calibration the day after it was used for data collection. The calibration agreed within 1 to 2% of the prior (1 Mar 2018) calibration so no changes were made. Casts Using Matlab, the time v. pressure data were plotted and each direction of each cast was separated and given a cast number. For each station, the best cast was kept which was typically the last downcast (i.e. the third) List of Stations Station Name Cast Number Used File Name 17 CMPA2 3 (2nd downcast) 065541_20190405_2348 18 CMPA1 13 (3rd downcast) 065541_20190405_2348 19 CMPA4 19 (3rd downcast) 065541_20190405_2348 20 CMPA3 25 (3rd downcast) 065541_20190405_2348 21 CMPA5 29 (2nd downcast) 065541_20190405_2348 22 CMPA6 39 (3rd downcast) 065541_20190405_2348 23 BPT_01 9 (4th downcast) 065639_20190408_0132 248 BPT_HC2 21 (3rd downcast) 065639_20190408_0132 Pressure The top 2m of data were removed from all casts. The top 2 m are influenced by proximity to the edge of the drilled ice-hole with the mix of water and ice slush. This water mix can create falsely fresh water, also cooling during the cast can freeze surface water and reject brine creating density inversions along the TS freezing line. The bottom 0.2m were removed due to poor data resulting from change of flow rate. Temperature shift and new Salinity a) Applied 3 scan shift to advance temperature after confirming it was better than 2 scans. b) Smoothed temperature and conductivity conductivity using a low pass filter (pl66) with a half amplitude period of 6 scans to recalculate new salinity. The conductivity smoothing was only applied after first 30 scans to prevent overshooting from possible large surface salinity gradients. Fluorometer Missing for first 6 stations due to CTD problems. For the last two stations, processed using a low pass filter (pl66) with a half amplitude period of 10 scans. Oxygen (RINKO) Missing for first 6 stations due to CTD problems. For the last two stations: The RBR CTD was configured to output volts. The data were advanced by 3 seconds (18 scans). This is roughly a 1.5m offset at a typical lowering (and raising) speed of 0.5m/sec. This brings the oxygen data in line with temperature. Factory coefficients A through F and the two determined from the 2-pt calibrations, coefficients G and H, were used to calculate oxygen saturation using RINKO's provided script for Type-B foil sensors. Oxygen concentration [mL/L] was calculated as full saturation concentration multiplied by percent saturation ( DO [ml/l] = DO at full saturation [ml/l] * %sat). DO at full saturation was calculated using Garcia and Gordon (1992,1993) Eq.8 using coeefficients in column 1 from Table 1 (fit to Benson and Krause (1984) data) and in situ temperature. The final data set has the adjusted oxygen saturation and oxygen concentration [mL/L]. REFERENCES: Benson, B.B., and D. Krause, 1984: The concentration and isotopic fractionation of oxygen dissolved in freshwater and seawater in equilibrium with the atmosphere. Limnology and Oceanography, 29, 620-632. Garcia, H.E., and L.I. Gordon, 1992: Oxygen solubility in seawater: Better fitting equations. Limnology and Oceanography, 37, 1307-1312. Garcia, H.E., and L.I. Gordon, 1993: Erratum: Oxygen solubility in seawater: better fitting equations. Limnology and Oceanography, 38, 656. Removed all pressure reversals Interpolated to 0.2db bins. Special edits: Station Edit NA NA Saved this cleaned dataset to a matlab *.mat files and an ODV *.o4x file 2019-31_CROW_Paulatuk1_cleandowncasts.mat 2019-31_CROW Paulatuk2_cleandowncasts.mat data_from_2019-31_CROW_Paulatuk1.txt data_from_2019-31_CROW_Paulatuk2.txt Used script file p_RBR_CROW_2019_Paul1.m for processing. Stations 1 to 6 Used script file p_RBR_CROW_2019_Paul2.m for processing. Stations 7 to 8 These both call p_RBR_generic_2019.m that uses ‘readtable’ to import data. Water Sample Analysis methods ------------------------------ Bottle data: At the last two stations, BPT_01, BPT_HC2, water samples were taken at 4 and 3 depths respectively. Depths were essentially at bottom, middle and near surface. Samples were taken for Nutrients (Nitrate+Nitrate (NO3), Silicate(SiO4), Phosphate (PO4)), Dissolved Inorganic Carbon (DIC), Alkalinity, Oxygen Isotope (d18O), and Salinity. All samples were collected in duplicate. The duplicate set of salinities may be used for other analysis such as Strontium. A single 5L Niskin was attached to the line above the RBR CTD. The CTD was lowered to the desired depth, a “messenger” was attached to the line and released, closing the Niskin. The line was pulled up and the Niskin removed and sampled before being put back on the line for the next sample. Bottle depth was determined to be maximum CTD depth minus 1.5 m to account for the distance between Niskin and CTD sensors. The CTD data corresponding to the bottle depth was recorded in a spreadsheet along with the water sample chemistry. Nutrients: Nutrient samples were collected, unfiltered, in new 15 mL polystyrene tubes after rinsing 3 times with sample water and then frozen until analysis. Samples accidentally thawed during the flight back to the lab at IOS (1 day) and were refrozen at -20C until analysis. The samples had been with cold packs that had remained frozen so its expected the samples had not warmed much or for very long. Samples thawed for 2 hours at ~28C and let equilibrate to room temperature before analysis 14 May 2019 (5 week after collection). Analysis was performed on a Seal Analytical AA3 with corrections made for salt effects and to the certified reference material (CRM). CRM used was Kanso Lot CA and CD. All samples were taken in duplicate however one tube cracked (sample #5) and was not used. Samples had a precision, calculated as the Standard Pool, of: NO3: 0.18 µM (n = 6, min = 5.34 µM, max = 8.65 µM) SiO4: 0.37 µM (n = 6, min = 11.82µM, max = 18.81 µM) PO4: 0.023 µM (n = 6, min = 1.093 µM, max =1.307 µM) Salinity: Salinity samples were collected into 200 mL type II glass bottles with screw caps and disposable plastic inserts after rinsing 3 times with sample water. Samples were kept unfrozen and brought back to IOS for analysis. Samples were analyzed May 15, 2019 (5 weeks after collection) in a temperature-controlled lab on the Guildline AutoSalinometer Model 8400B (SN: 69086), which was standardized with IAPSO standard seawater, Batch #162, exp 20 May 2022. No replicates as second set of salinities may be run for a separate analysis. Removing 1 outlier, comparison with ctd (n=6): mean -0.002 PSU, standard deviation 0.004 PSU. DIC and Alkalinity DIC and Alkalinity were analysed out of the same sample. A glass 330ml (beer) bottle was rinsed three times and filled, head space given, poisoned with about 70ug powdered mercuric chloride and sealed with a metal crimp cap. Samples were kept cool (4C) until analysis at the Institute of Ocean Sciences. DIC was analysed using the VINDTA 84, a coulometer system. Dickson CRM batch 178 standard water was used. Alkalinity samples were analyzed using an automated potentiometric titration system with an open cell type and non-linear least squares endpoint determination for the total alkalinity measurement. Dickson CRM batch 173 standard water was used. Samples were analysed May 2, 2019, less than 4 weeks after collection. All samples had been collected in replicate. Standard deviation of replicates after removing questionable sample #6: DIC: 1.05umol/kg, n=6 Alkalinity: 1.60 umol/kg, n=6 Comments from Water Sample Analysis ----------------------------------- Sample_number 5: NUT: duplicate sample tube cracked, data not used Sample_number 6: DIC: higher variability than usual in replicates Sample_number 6: Alk: higher variability than usual in replicates !-1- --2--- ---3---- ---4---- ---5---- --6--- ---7--- ---8--- ---9---- -10 --11-- -12 --13-- -14 ---15-- -16 ---17-- -18 ---19-- -20 !Bot Pressu Temperat Conducti Salinity Oxygen Oxygen: Fluores Salinity Fla Nitrat Fla Silica Fla Phospha Fla Carbon: Fla Alkalin Fla !tle re ure vity : Dissolv censce: :Bottle g:S e_ g:N te g: te g: Dissolv g:C ity: g:A !_ Dissol ed:Satu URU: ~y: plus_ ~_N Sil Pho ed: ~no Total ~ty !Num ved: ration: Turner Bot Nitrit itr ica sph Inorgan rga :To !ber Rinko Rinko tle e ite te ate ic nic tal !--- ------ -------- -------- -------- ------ ------- ------- -------- --- ------ --- ------ --- ------- --- ------- --- ------- --- *END OF HEADER 5 91.2 -1.6403 25.7422 32.3129 7.47 87.59 0.241 32.3150 0 8.65 0 18.81 0 1.307 0 2202.62 6 2269.48 6 6 21.4 -1.7348 25.4902 32.1101 8.04 93.87 0.794 32.1120 0 6.10 6 13.44 6 1.147 6 2194.23 6,3 2375.61 6,3 7 2.6 -1.7210 25.2351 31.7538 8.11 94.57 0.874 31.8300 0 5.47 6 11.82 6 1.101 6 2155.04 6 2251.59 6