*2021/03/12 16:15:44.96 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 MATLAB *FILE START TIME : UTC 2019/03/07 22:20:34.278 NUMBER OF RECORDS : 91 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- ----------------- --------- ------- 1 Pressure decibar 2.2 20.2 2 Depth metres 2.2 20.0 3 Temperature 'deg C (ITS90)' -1.5664 -1.5416 4 Conductivity mS/cm 23.0431 23.2565 5 Salinity PSS-78 28.5930 28.8498 6 Fluorescensce:URU:Turner mg/m^3 0.163 0.212 7 Oxygen:Dissolved:Rinko mL/L 8.12 8.44 8 Oxygen:Dissolved:Saturation:Rinko % 93.18 96.63 $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 : Cbay2-Cst7 EVENT NUMBER : 3 LATITUDE : 69 5.50000 N ! (deg min) LONGITUDE : 105 1.00500 W ! (deg min) WATER DEPTH : 25.0 $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 16:15:45 91 91 $END $REMARKS -PRNTIOS_FMTS_201931CROW_SINGLE processing: 2021/03/12 16:15:44 $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 -1.5659 23.0431 28.5930 0.192 8.44 96.63 2.4 2.4 -1.5659 23.0436 28.5936 0.205 8.44 96.63 2.6 2.6 -1.5661 23.0440 28.5943 0.212 8.43 96.42 2.8 2.8 -1.5663 23.0435 28.5937 0.207 8.42 96.36 3.0 3.0 -1.5664 23.0440 28.5944 0.194 8.42 96.31 3.2 3.2 -1.5663 23.0442 28.5944 0.183 8.41 96.24 3.4 3.4 -1.5659 23.0483 28.5994 0.177 8.40 96.18 3.6 3.6 -1.5654 23.0511 28.6029 0.176 8.41 96.23 3.8 3.8 -1.5656 23.0522 28.6042 0.176 8.40 96.13 4.0 4.0 -1.5650 23.0554 28.6080 0.176 8.40 96.17 4.2 4.2 -1.5645 23.0565 28.6089 0.178 8.40 96.12 4.4 4.4 -1.5645 23.0552 28.6069 0.180 8.40 96.13 4.6 4.6 -1.5649 23.0621 28.6164 0.183 8.39 96.01 4.8 4.8 -1.5648 23.0734 28.6318 0.182 8.38 95.95 5.0 4.9 -1.5647 23.0669 28.6235 0.178 8.38 95.88 5.2 5.1 -1.5652 23.0733 28.6315 0.173 8.38 95.87 5.4 5.3 -1.5651 23.0855 28.6449 0.169 8.37 95.77 5.6 5.5 -1.5650 23.0877 28.6537 0.167 8.36 95.71 5.8 5.7 -1.5649 23.0945 28.6593 0.167 8.35 95.61 6.0 5.9 -1.5651 23.0971 28.6636 0.169 8.34 95.44 6.2 6.1 -1.5657 23.0989 28.6657 0.169 8.34 95.44 6.4 6.3 -1.5649 23.1005 28.6694 0.167 8.32 95.27 6.6 6.5 -1.5628 23.1100 28.6751 0.164 8.31 95.22 6.8 6.7 -1.5619 23.1085 28.6766 0.163 8.31 95.12 7.0 6.9 -1.5612 23.1105 28.6771 0.165 8.29 94.92 7.2 7.1 -1.5606 23.1116 28.6787 0.169 8.27 94.76 7.4 7.3 -1.5590 23.1151 28.6817 0.174 8.26 94.55 7.6 7.5 -1.5582 23.1185 28.6858 0.178 8.23 94.27 7.8 7.7 -1.5575 23.1213 28.6886 0.181 8.22 94.18 8.0 7.9 -1.5565 23.1227 28.6897 0.182 8.21 94.10 8.2 8.1 -1.5560 23.1248 28.6900 0.180 8.20 93.95 8.4 8.3 -1.5558 23.1243 28.6917 0.178 8.21 94.00 8.6 8.5 -1.5532 23.1320 28.6950 0.178 8.21 94.03 8.8 8.7 -1.5496 23.1360 28.6999 0.181 8.20 93.99 9.0 8.9 -1.5461 23.1420 28.7038 0.184 8.18 93.69 9.2 9.1 -1.5476 23.1416 28.7055 0.186 8.16 93.55 9.4 9.3 -1.5480 23.1437 28.7091 0.188 8.16 93.56 9.6 9.5 -1.5493 23.1479 28.7145 0.190 8.17 93.64 9.8 9.7 -1.5509 23.1488 28.7180 0.193 8.19 93.80 10.0 9.9 -1.5494 23.1524 28.7221 0.194 8.20 93.94 10.2 10.1 -1.5456 23.1594 28.7272 0.191 8.21 94.09 10.4 10.3 -1.5466 23.1616 28.7304 0.186 8.21 94.15 10.6 10.5 -1.5507 23.1598 28.7324 0.184 8.22 94.16 10.8 10.7 -1.5532 23.1612 28.7370 0.186 8.23 94.26 11.0 10.9 -1.5540 23.1674 28.7455 0.192 8.23 94.28 11.2 11.1 -1.5532 23.1747 28.7547 0.196 8.23 94.35 11.4 11.3 -1.5527 23.1794 28.7615 0.197 8.23 94.29 11.6 11.5 -1.5526 23.1827 28.7645 0.194 8.23 94.34 11.8 11.7 -1.5525 23.1834 28.7655 0.191 8.23 94.29 12.0 11.9 -1.5519 23.1870 28.7687 0.190 8.23 94.28 12.2 12.1 -1.5514 23.1913 28.7759 0.190 8.22 94.28 12.4 12.3 -1.5497 23.2002 28.7846 0.190 8.22 94.29 12.6 12.5 -1.5484 23.2041 28.7895 0.190 8.22 94.28 12.8 12.7 -1.5481 23.2057 28.7914 0.189 8.22 94.28 13.0 12.9 -1.5464 23.2088 28.7929 0.188 8.22 94.26 13.2 13.1 -1.5457 23.2105 28.7947 0.189 8.21 94.12 13.4 13.3 -1.5475 23.2100 28.7959 0.189 8.21 94.08 13.6 13.5 -1.5488 23.2106 28.7983 0.188 8.20 93.99 13.8 13.7 -1.5469 23.2144 28.8008 0.186 8.19 93.90 14.0 13.9 -1.5456 23.2162 28.8016 0.185 8.18 93.77 14.2 14.1 -1.5444 23.2217 28.8093 0.185 8.17 93.69 14.4 14.3 -1.5438 23.2329 28.8219 0.186 8.16 93.62 14.6 14.5 -1.5440 23.2370 28.8285 0.187 8.16 93.57 14.8 14.7 -1.5437 23.2384 28.8306 0.188 8.15 93.53 15.0 14.8 -1.5440 23.2413 28.8340 0.189 8.15 93.51 15.2 15.0 -1.5442 23.2431 28.8362 0.190 8.15 93.48 15.4 15.2 -1.5442 23.2428 28.8362 0.189 8.15 93.47 15.6 15.4 -1.5448 23.2432 28.8375 0.188 8.14 93.37 15.8 15.6 -1.5446 23.2464 28.8408 0.188 8.14 93.38 16.0 15.8 -1.5439 23.2478 28.8431 0.188 8.14 93.35 16.2 16.0 -1.5433 23.2496 28.8446 0.187 8.14 93.35 16.4 16.2 -1.5431 23.2507 28.8453 0.186 8.13 93.25 16.6 16.4 -1.5433 23.2505 28.8452 0.185 8.13 93.27 16.8 16.6 -1.5430 23.2508 28.8453 0.185 8.12 93.19 17.0 16.8 -1.5442 23.2508 28.8461 0.187 8.12 93.18 17.2 17.0 -1.5450 23.2502 28.8464 0.191 8.14 93.33 17.4 17.2 -1.5446 23.2509 28.8463 0.194 8.13 93.27 17.6 17.4 -1.5444 23.2514 28.8463 0.195 8.13 93.30 17.8 17.6 -1.5438 23.2515 28.8467 0.192 8.13 93.25 18.0 17.8 -1.5434 23.2528 28.8475 0.188 8.13 93.30 18.2 18.0 -1.5430 23.2536 28.8480 0.185 8.13 93.21 18.4 18.2 -1.5425 23.2539 28.8479 0.185 8.13 93.27 18.6 18.4 -1.5425 23.2536 28.8475 0.186 8.13 93.28 18.8 18.6 -1.5428 23.2539 28.8474 0.187 8.13 93.22 19.0 18.8 -1.5423 23.2539 28.8481 0.187 8.13 93.29 19.2 19.0 -1.5427 23.2553 28.8490 0.187 8.13 93.27 19.4 19.2 -1.5431 23.2546 28.8492 0.186 8.13 93.23 19.6 19.4 -1.5433 23.2540 28.8485 0.185 8.12 93.21 19.8 19.6 -1.5421 23.2546 28.8481 0.186 8.13 93.26 20.0 19.8 -1.5416 23.2559 28.8485 0.187 8.13 93.21 20.2 20.0 -1.5416 23.2565 28.8498 0.188 8.13 93.26