*2021/03/12 16:15:46.79 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 MATLAB *FILE START TIME : UTC 2019/03/10 17:22:53.574 NUMBER OF RECORDS : 133 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- ----------------- --------- ------- 1 Pressure decibar 2.2 28.6 2 Depth metres 2.2 28.3 3 Temperature 'deg C (ITS90)' -1.5166 -1.4735 4 Conductivity mS/cm 22.5472 22.7489 5 Salinity PSS-78 27.8742 28.0923 6 Fluorescensce:URU:Turner mg/m^3 0.177 0.245 7 Oxygen:Dissolved:Rinko mL/L 8.27 8.50 8 Oxygen:Dissolved:Saturation:Rinko % 94.54 96.86 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- -------- ----- ----- ------ ---- -------------- 1 -99.0 ' ' 7 F R4 1 2 -99.0 ' ' 7 F R4 1 3 -99.0000 ' ' 9 F R4 4 4 -99.0000 ' ' 9 F R4 4 5 -99.0000 ' ' 9 F R4 4 6 -99.000 ' ' 8 F R4 3 7 -99.00 ' ' 7 F R4 2 8 -99.00 ' ' 8 F R4 2 $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 : DS18-01-Cst21 EVENT NUMBER : 9 LATITUDE : 68 56.19900 N ! (deg min) LONGITUDE : 105 14.00000 W ! (deg min) WATER DEPTH : 33.3 $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 : 65543 $TABLE: SENSORS ! Name Serial No ! --------------------------------------------------- ---------- 'Temperature: RBR Concerto' 65543 'Conductivity: RBR Concerto' 65543 'Oxygen:JFEAdvantechRinkoIII TypeA foil' 5 'Fluorometer: Turner Design: Cyclops' 2102849 $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 ! ------------------------------ ---- ---------- -------- --------- --------- PRNTIOS_FMTS_201931CROW_SINGLE 1.0 2021/03/12 16:15:47 133 133 $END $REMARKS -PRNTIOS_FMTS_201931CROW_SINGLE processing: 2021/03/12 16:15:46 $END *COMMENTS Program Summary There were multiple 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. Leg3, 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 Cambridge Bay CTD Data There are 13 stations in three data sets: 6 Mar 2019 Cambridge Bay 1 stations 065543_20190306_2159_data.txt 7 Mar 2019 Cambridge Bay 3 stations 065543_20190307_2356_data.txt 10 Mar 2019 UN Islands 4 stations included in next file 11 Mar 2019 Dease Strait 5 stations 065543_20190311_2052_data.txt Meta data are recorded in: CROW 2019 log_2019-10-16.xlsx Comments 1. CBay2 station shows freezing on first downcast, but the upcast and second cast are fine. Equipment RBR Concerto 65543 w/ 6Hz sampling rate Calibration Dates 25 Jun 2018 (RBR) new w/ Turner Cyclops Fluorometer sensor #2102849 Fluorometer set for 0 to 5 ug/l range Calibration Dates 15 Feb 2018 (3pt-check, IOS), Jan 2013 (new) w/ JFE Advantech RINKO III Oxygen sensor #5 Type-A foil, Reporting in % Saturation Calibration Dates28 Feb 2019 (2pt-cal, IOS), 25 Jan 2009 (new) Air thermometer Ice Auger# SN3 Downrigger# SN6 Kit # 4 Data Collection Method Follow protocol laid out in Ranger science manual ver7 2015.doc Changes to protocol: Stations typically had a soak then two casts (RBR left in the water). This was changed for the last five stations (March 11th) to three casts per station. Processing 2021-03-11 Update RBR identified and fixed the problem in Ruskin that was calculating oxygen saturation using the fixed temperature when the CTD was turned on, not the real-time temperature. The original *.RSK files were corrected using Ruskin 2.10.202005061945 to update the oxygen saturation value and then exported to *.TXT for further processing. In Ruskin: 1. Changed Calibration, 5: Dissolved O2 Saturation term C0 by adding 0.0000001 2. Clicked “Store and recompute data” 3. Export > Txt.zip Note the *.RSK is now changed as well. In MATLAB, existing station scan number list from original processing was used to re-create the rough mat file and then the cleaned mat files. From here the processing step to export single *.CTD files in IOS header format with added note in the header was redone. Calibration issues 2-pt Oxygen calibration done at IOS prior to data collection. New G and H terms are: -3.32946282 1.181996051 (RSK C0, C1) 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, typically the last downcast (ie second or third). Station Name Cast Number Used File Name 1 CBay1 3 (2nd downcast) 065543_20190306_2159 2 West Arm 3 (2nd downcast) 065543_20190306_2159 3 Cbay2 7 (2nd downcast) 065543_20190306_2159 4 Cbay6 11 (2nd downcast) 065543_20190306_2159 5 AZFP 3 (2nd downcast) 065543_20190311_0250 6 UN10 7 (2nd downcast) 065543_20190311_0250 7 UN20 11 (2nd downcast) 065543_20190311_0250 8 UN30 15 (2nd downcast) 065543_20190311_0250 9 DS18-01 21 (3rd downcast) 065543_20190311_0250 10 DS18-03 27 (3rd downcast) 065543_20190311_0250 11 DS18-05 33 (3rd downcast) 065543_20190311_0250 12 DS18-04 39 (3rd downcast) 065543_20190311_0250 13 DS18-02 45 (3rd downcast) 065543_20190311_0250 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, the mix of water and ice slush. This can create falsely fresh water but also with and cooling during the cast further and beginning to freeze and reject brine this can create a density inversion 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 to recalculate new salinity. Conductivity smoothing only applied after first 30 scans to prevent overshooting from possible large surface salinity gradients. Fluorometer Processed using a low pass filter (pl66.m) with a half amplitude period of 10 scans. Oxygen (RINKO) RBR was configured to output percent oxygen saturation (and the unused concentration [mg/l]) and not volts. Calibration coefficients have been installed in the CTD. Oxygen saturation was advanced by 3 seconds (18 scans) and 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. These are NOT centered. Special edits - None Saved this cleaned dataset to matlab *.mat file and an ODV *.o4x file Used script file p_RBR_CROW_2019_CB1.m for processing stations 1. Used script file p_RBR_CROW_2019_CB2.m for processing stations 2 to 4. Used script file p_RBR_CROW_2019_CB3.m for processing stations 5 to 13 !--1--- --2--- ---3---- ---4---- ---5---- ---6--- ---7-- ---8--- !Pressu Depth Temperat Conducti Salinity Fluores Oxygen Oxygen: !re ure ity cence: : Dissolv ! URU: Dissol ed: ! Turner ed: Saturat ! Rinko ion: ! Rinko !------ ------ -------- -------- -------- ------- ------ ------- *END OF HEADER 2.2 2.2 -1.5166 22.5472 27.8742 0.245 8.50 96.86 2.4 2.4 -1.5161 22.5493 27.8764 0.232 8.49 96.80 2.6 2.6 -1.5156 22.5514 27.8786 0.219 8.49 96.75 2.8 2.8 -1.5152 22.5530 27.8802 0.211 8.49 96.75 3.0 3.0 -1.5142 22.5559 27.8833 0.209 8.48 96.70 3.2 3.2 -1.5135 22.5592 27.8868 0.210 8.48 96.69 3.4 3.4 -1.5123 22.5590 27.8856 0.210 8.48 96.67 3.6 3.6 -1.5125 22.5601 27.8869 0.206 8.48 96.66 3.8 3.8 -1.5123 22.5606 27.8876 0.201 8.47 96.58 4.0 4.0 -1.5121 22.5631 27.8905 0.195 8.47 96.56 4.2 4.2 -1.5111 22.5644 27.8913 0.192 8.47 96.54 4.4 4.4 -1.5112 22.5631 27.8895 0.190 8.46 96.52 4.6 4.6 -1.5119 22.5646 27.8919 0.190 8.47 96.56 4.8 4.8 -1.5116 22.5654 27.8925 0.191 8.46 96.42 5.0 4.9 -1.5104 22.5684 27.8959 0.191 8.45 96.42 5.2 5.1 -1.5107 22.5687 27.8949 0.191 8.45 96.32 5.4 5.3 -1.5091 22.5713 27.8972 0.191 8.44 96.32 5.6 5.5 -1.5072 22.5776 27.9063 0.190 8.44 96.32 5.8 5.7 -1.5065 22.5872 27.9158 0.187 8.44 96.29 6.0 5.9 -1.5069 22.5861 27.9171 0.183 8.43 96.18 6.2 6.1 -1.5063 22.5871 27.9178 0.183 8.44 96.25 6.4 6.3 -1.5057 22.5935 27.9222 0.188 8.44 96.23 6.6 6.5 -1.5058 22.5923 27.9242 0.196 8.43 96.16 6.8 6.7 -1.5062 22.5942 27.9239 0.200 8.42 96.06 7.0 6.9 -1.5048 22.5942 27.9264 0.199 8.42 96.10 7.2 7.1 -1.5040 22.6014 27.9308 0.194 8.42 96.06 7.4 7.3 -1.5040 22.6015 27.9337 0.190 8.42 96.06 7.6 7.5 -1.5039 22.6033 27.9356 0.187 8.42 96.03 7.8 7.7 -1.5038 22.6049 27.9364 0.187 8.42 96.05 8.0 7.9 -1.5037 22.6037 27.9363 0.187 8.42 96.05 8.2 8.1 -1.5036 22.6048 27.9366 0.188 8.42 96.04 8.4 8.3 -1.5036 22.6056 27.9365 0.189 8.41 96.01 8.6 8.5 -1.5031 22.6049 27.9371 0.189 8.41 95.93 8.8 8.7 -1.5031 22.6086 27.9406 0.188 8.41 95.92 9.0 8.9 -1.5031 22.6102 27.9429 0.187 8.40 95.87 9.2 9.1 -1.5029 22.6102 27.9419 0.187 8.40 95.83 9.4 9.3 -1.5015 22.6107 27.9433 0.187 8.40 95.80 9.6 9.5 -1.4995 22.6228 27.9534 0.187 8.39 95.76 9.8 9.7 -1.4988 22.6290 27.9632 0.186 8.39 95.77 10.0 9.9 -1.4986 22.6309 27.9675 0.185 8.39 95.72 10.2 10.1 -1.4983 22.6335 27.9687 0.185 8.38 95.69 10.4 10.3 -1.4983 22.6338 27.9701 0.184 8.38 95.68 10.6 10.5 -1.4980 22.6354 27.9713 0.182 8.38 95.66 10.8 10.7 -1.4980 22.6358 27.9719 0.179 8.39 95.72 11.0 10.9 -1.4982 22.6354 27.9711 0.177 8.38 95.66 11.2 11.1 -1.4982 22.6346 27.9699 0.177 8.38 95.65 11.4 11.3 -1.4975 22.6357 27.9725 0.178 8.37 95.60 11.6 11.5 -1.4970 22.6441 27.9787 0.179 8.37 95.59 11.8 11.7 -1.4966 22.6443 27.9836 0.181 8.37 95.59 12.0 11.9 -1.4967 22.6472 27.9847 0.181 8.37 95.55 12.2 12.1 -1.4967 22.6464 27.9847 0.181 8.37 95.59 12.4 12.3 -1.4965 22.6487 27.9867 0.181 8.37 95.55 12.6 12.5 -1.4960 22.6525 27.9907 0.182 8.36 95.48 12.8 12.7 -1.4960 22.6535 27.9935 0.185 8.37 95.54 13.0 12.9 -1.4958 22.6543 27.9933 0.187 8.36 95.47 13.2 13.1 -1.4955 22.6542 27.9936 0.188 8.36 95.47 13.4 13.3 -1.4949 22.6573 27.9968 0.186 8.35 95.37 13.6 13.5 -1.4946 22.6612 28.0004 0.185 8.36 95.50 13.8 13.7 -1.4946 22.6614 28.0026 0.187 8.36 95.44 14.0 13.9 -1.4934 22.6673 28.0082 0.192 8.35 95.39 14.2 14.1 -1.4925 22.6728 28.0139 0.201 8.35 95.33 14.4 14.3 -1.4923 22.6717 28.0143 0.211 8.35 95.37 14.6 14.5 -1.4929 22.6711 28.0111 0.219 8.35 95.32 14.8 14.7 -1.4927 22.6704 28.0110 0.221 8.34 95.23 15.0 14.8 -1.4922 22.6719 28.0133 0.216 8.34 95.27 15.2 15.0 -1.4917 22.6750 28.0158 0.208 8.34 95.29 15.4 15.2 -1.4913 22.6765 28.0184 0.203 8.34 95.22 15.6 15.4 -1.4907 22.6797 28.0212 0.204 8.34 95.20 15.8 15.6 -1.4901 22.6796 28.0225 0.208 8.33 95.14 16.0 15.8 -1.4897 22.6820 28.0222 0.210 8.33 95.12 16.2 16.0 -1.4899 22.6798 28.0229 0.209 8.33 95.11 16.4 16.2 -1.4903 22.6828 28.0255 0.209 8.33 95.11 16.6 16.4 -1.4888 22.6892 28.0303 0.210 8.33 95.13 16.8 16.6 -1.4887 22.6906 28.0337 0.211 8.32 95.05 17.0 16.8 -1.4881 22.6902 28.0342 0.211 8.32 95.08 17.2 17.0 -1.4877 22.6922 28.0353 0.208 8.33 95.11 17.4 17.2 -1.4877 22.6939 28.0371 0.204 8.32 95.08 17.6 17.4 -1.4880 22.6937 28.0371 0.200 8.32 95.09 17.8 17.6 -1.4880 22.6940 28.0369 0.199 8.32 94.99 18.0 17.8 -1.4875 22.6935 28.0385 0.200 8.31 94.98 18.2 18.0 -1.4867 22.6994 28.0398 0.202 8.31 94.92 18.4 18.2 -1.4847 22.6975 28.0412 0.202 8.31 94.90 18.6 18.4 -1.4835 22.7061 28.0478 0.202 8.31 94.89 18.8 18.6 -1.4814 22.7129 28.0565 0.203 8.30 94.84 19.0 18.8 -1.4812 22.7175 28.0619 0.204 8.30 94.87 19.2 19.0 -1.4813 22.7180 28.0624 0.204 8.30 94.84 19.4 19.2 -1.4812 22.7174 28.0617 0.204 8.30 94.86 19.6 19.4 -1.4812 22.7176 28.0623 0.203 8.30 94.86 19.8 19.6 -1.4816 22.7185 28.0628 0.203 8.29 94.79 20.0 19.8 -1.4814 22.7173 28.0623 0.203 8.30 94.83 20.2 20.0 -1.4819 22.7170 28.0611 0.203 8.30 94.82 20.4 20.2 -1.4822 22.7158 28.0596 0.202 8.29 94.78 20.6 20.4 -1.4821 22.7146 28.0586 0.202 8.30 94.79 20.8 20.6 -1.4819 22.7151 28.0592 0.203 8.30 94.81 21.0 20.8 -1.4816 22.7175 28.0608 0.207 8.30 94.81 21.2 21.0 -1.4819 22.7173 28.0613 0.212 8.30 94.79 21.4 21.2 -1.4820 22.7163 28.0603 0.214 8.30 94.83 21.6 21.4 -1.4823 22.7163 28.0590 0.215 8.30 94.82 21.8 21.6 -1.4810 22.7158 28.0596 0.214 8.29 94.76 22.0 21.8 -1.4810 22.7199 28.0614 0.214 8.29 94.73 22.2 22.0 -1.4805 22.7184 28.0626 0.215 8.29 94.75 22.4 22.2 -1.4806 22.7213 28.0636 0.216 8.29 94.71 22.6 22.4 -1.4803 22.7204 28.0644 0.217 8.29 94.71 22.8 22.6 -1.4803 22.7219 28.0649 0.216 8.29 94.77 23.0 22.8 -1.4802 22.7227 28.0659 0.214 8.29 94.74 23.2 23.0 -1.4801 22.7237 28.0669 0.211 8.29 94.78 23.4 23.2 -1.4798 22.7238 28.0674 0.209 8.29 94.70 23.6 23.4 -1.4800 22.7245 28.0673 0.207 8.29 94.70 23.8 23.6 -1.4801 22.7231 28.0668 0.206 8.29 94.75 24.0 23.8 -1.4797 22.7241 28.0666 0.206 8.29 94.78 24.2 24.0 -1.4799 22.7236 28.0665 0.207 8.29 94.77 24.4 24.2 -1.4799 22.7239 28.0663 0.207 8.30 94.80 24.6 24.4 -1.4798 22.7236 28.0663 0.207 8.29 94.77 24.8 24.5 -1.4796 22.7248 28.0671 0.205 8.29 94.72 25.0 24.7 -1.4795 22.7258 28.0680 0.202 8.29 94.74 25.2 24.9 -1.4794 22.7258 28.0690 0.201 8.29 94.68 25.4 25.1 -1.4793 22.7274 28.0703 0.202 8.29 94.70 25.6 25.3 -1.4788 22.7276 28.0700 0.205 8.28 94.63 25.8 25.5 -1.4785 22.7273 28.0686 0.208 8.28 94.65 26.0 25.7 -1.4777 22.7285 28.0702 0.209 8.28 94.64 26.2 25.9 -1.4766 22.7358 28.0762 0.207 8.28 94.62 26.4 26.1 -1.4762 22.7383 28.0817 0.204 8.28 94.66 26.6 26.3 -1.4766 22.7388 28.0824 0.201 8.28 94.64 26.8 26.5 -1.4765 22.7379 28.0814 0.200 8.28 94.64 27.0 26.7 -1.4767 22.7384 28.0817 0.201 8.27 94.57 27.2 26.9 -1.4764 22.7391 28.0823 0.205 8.27 94.59 27.4 27.1 -1.4761 22.7393 28.0823 0.208 8.28 94.60 27.6 27.3 -1.4759 22.7398 28.0826 0.209 8.27 94.56 27.8 27.5 -1.4757 22.7405 28.0830 0.209 8.27 94.54 28.0 27.7 -1.4753 22.7414 28.0839 0.207 8.27 94.57 28.2 27.9 -1.4737 22.7429 28.0870 0.207 8.27 94.59 28.4 28.1 -1.4735 22.7483 28.0906 0.208 8.27 94.59 28.6 28.3 -1.4735 22.7489 28.0923 0.209 8.27 94.59