*2021/03/12 16:15:50.10 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 MATLAB *FILE START TIME : UTC 2019/04/05 17:12:37.164 NUMBER OF RECORDS : 106 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- ----------------- --------- ------- 1 Pressure decibar 2.2 23.2 2 Depth metres 2.2 23.0 3 Temperature 'deg C (ITS90)' -1.7349 -1.6416 4 Conductivity mS/cm 25.5423 25.6792 5 Salinity PSS-78 32.1612 32.2727 6 Fluorescensce:URU:Turner mg/m^3 -99.000 -99.000 7 Oxygen:Dissolved:Rinko mL/L -99.00 -99.00 8 Oxygen:Dissolved:Saturation:Rinko % -99.00 -99.00 $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 : CMPA2-Cst3 EVENT NUMBER : 17 LATITUDE : 69 37.51900 N ! (deg min) LONGITUDE : 123 57.40100 W ! (deg min) WATER DEPTH : 28.0 $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 : 65541 $TABLE: SENSORS ! Name Serial No ! --------------------------------------------------- ---------- 'Temperature: RBR Concerto' 65541 'Conductivity: RBR Concerto' 65541 'Oxygen:JFEAdvantechRinkoIII TypeA foil' 9 'Fluorometer: Turner Design: Cyclops' 21100027 $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 16:15:50 106 106 $END $REMARKS -PRNTIOS_FMTS_201931CROW_SINGLE processing: 2021/03/12 16:15:50 $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 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_2019-10-16.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 2021-03-11 Update The problem with the Ruskin software does not affect these data and no re-processing was needed. 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 24 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. !--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 -1.7226 25.5423 32.1775 -99.000 -99.00 -99.00 2.4 2.4 -1.6980 25.5464 32.1612 -99.000 -99.00 -99.00 2.6 2.6 -1.6830 25.5744 32.1836 -99.000 -99.00 -99.00 2.8 2.8 -1.6902 25.5950 32.2148 -99.000 -99.00 -99.00 3.0 3.0 -1.6972 25.5810 32.2072 -99.000 -99.00 -99.00 3.2 3.2 -1.7175 25.5738 32.2157 -99.000 -99.00 -99.00 3.4 3.4 -1.7291 25.5649 32.2169 -99.000 -99.00 -99.00 3.6 3.6 -1.7313 25.5614 32.2170 -99.000 -99.00 -99.00 3.8 3.8 -1.7326 25.5612 32.2182 -99.000 -99.00 -99.00 4.0 4.0 -1.7349 25.5619 32.2193 -99.000 -99.00 -99.00 4.2 4.2 -1.7345 25.5617 32.2186 -99.000 -99.00 -99.00 4.4 4.4 -1.7334 25.5625 32.2189 -99.000 -99.00 -99.00 4.6 4.6 -1.7326 25.5692 32.2273 -99.000 -99.00 -99.00 4.8 4.8 -1.7323 25.5695 32.2270 -99.000 -99.00 -99.00 5.0 4.9 -1.7321 25.5702 32.2275 -99.000 -99.00 -99.00 5.2 5.1 -1.7318 25.5706 32.2277 -99.000 -99.00 -99.00 5.4 5.3 -1.7313 25.5711 32.2278 -99.000 -99.00 -99.00 5.6 5.5 -1.7309 25.5719 32.2284 -99.000 -99.00 -99.00 5.8 5.7 -1.7307 25.5717 32.2280 -99.000 -99.00 -99.00 6.0 5.9 -1.7309 25.5729 32.2296 -99.000 -99.00 -99.00 6.2 6.1 -1.7310 25.5726 32.2285 -99.000 -99.00 -99.00 6.4 6.3 -1.7296 25.5733 32.2284 -99.000 -99.00 -99.00 6.6 6.5 -1.7290 25.5749 32.2303 -99.000 -99.00 -99.00 6.8 6.7 -1.7302 25.5763 32.2324 -99.000 -99.00 -99.00 7.0 6.9 -1.7318 25.5749 32.2327 -99.000 -99.00 -99.00 7.2 7.1 -1.7316 25.5742 32.2321 -99.000 -99.00 -99.00 7.4 7.3 -1.7311 25.5746 32.2316 -99.000 -99.00 -99.00 7.6 7.5 -1.7314 25.5754 32.2318 -99.000 -99.00 -99.00 7.8 7.7 -1.7310 25.5751 32.2322 -99.000 -99.00 -99.00 8.0 7.9 -1.7310 25.5758 32.2326 -99.000 -99.00 -99.00 8.2 8.1 -1.7312 25.5760 32.2329 -99.000 -99.00 -99.00 8.4 8.3 -1.7312 25.5766 32.2330 -99.000 -99.00 -99.00 8.6 8.5 -1.7303 25.5773 32.2333 -99.000 -99.00 -99.00 8.8 8.7 -1.7289 25.5779 32.2343 -99.000 -99.00 -99.00 9.0 8.9 -1.7302 25.5802 32.2361 -99.000 -99.00 -99.00 9.2 9.1 -1.7326 25.5798 32.2373 -99.000 -99.00 -99.00 9.4 9.3 -1.7325 25.5777 32.2369 -99.000 -99.00 -99.00 9.6 9.5 -1.7325 25.5776 32.2360 -99.000 -99.00 -99.00 9.8 9.7 -1.7326 25.5778 32.2354 -99.000 -99.00 -99.00 10.0 9.9 -1.7321 25.5782 32.2360 -99.000 -99.00 -99.00 10.2 10.1 -1.7311 25.5793 32.2368 -99.000 -99.00 -99.00 10.4 10.3 -1.7313 25.5815 32.2375 -99.000 -99.00 -99.00 10.6 10.5 -1.7307 25.5806 32.2376 -99.000 -99.00 -99.00 10.8 10.7 -1.7299 25.5813 32.2377 -99.000 -99.00 -99.00 11.0 10.9 -1.7294 25.5825 32.2384 -99.000 -99.00 -99.00 11.2 11.1 -1.7288 25.5847 32.2399 -99.000 -99.00 -99.00 11.4 11.3 -1.7289 25.5851 32.2406 -99.000 -99.00 -99.00 11.6 11.5 -1.7283 25.5846 32.2402 -99.000 -99.00 -99.00 11.8 11.7 -1.7279 25.5849 32.2390 -99.000 -99.00 -99.00 12.0 11.9 -1.7263 25.5857 32.2376 -99.000 -99.00 -99.00 12.2 12.1 -1.7233 25.5864 32.2374 -99.000 -99.00 -99.00 12.4 12.3 -1.7219 25.5886 32.2388 -99.000 -99.00 -99.00 12.6 12.5 -1.7207 25.5923 32.2410 -99.000 -99.00 -99.00 12.8 12.7 -1.7231 25.5931 32.2418 -99.000 -99.00 -99.00 13.0 12.9 -1.7218 25.5899 32.2413 -99.000 -99.00 -99.00 13.2 13.1 -1.7192 25.5925 32.2411 -99.000 -99.00 -99.00 13.4 13.3 -1.7179 25.5967 32.2424 -99.000 -99.00 -99.00 13.6 13.5 -1.7190 25.5974 32.2449 -99.000 -99.00 -99.00 13.8 13.7 -1.7199 25.5961 32.2462 -99.000 -99.00 -99.00 14.0 13.9 -1.7216 25.5960 32.2468 -99.000 -99.00 -99.00 14.2 14.1 -1.7261 25.5942 32.2468 -99.000 -99.00 -99.00 14.4 14.3 -1.7264 25.5911 32.2459 -99.000 -99.00 -99.00 14.6 14.5 -1.7253 25.5912 32.2441 -99.000 -99.00 -99.00 14.8 14.7 -1.7231 25.5931 32.2414 -99.000 -99.00 -99.00 15.0 14.8 -1.7157 25.5945 32.2393 -99.000 -99.00 -99.00 15.2 15.0 -1.7090 25.5985 32.2396 -99.000 -99.00 -99.00 15.4 15.2 -1.7014 25.6117 32.2416 -99.000 -99.00 -99.00 15.6 15.4 -1.6905 25.6196 32.2444 -99.000 -99.00 -99.00 15.8 15.6 -1.6822 25.6260 32.2477 -99.000 -99.00 -99.00 16.0 15.8 -1.6798 25.6350 32.2514 -99.000 -99.00 -99.00 16.2 16.0 -1.6763 25.6392 32.2552 -99.000 -99.00 -99.00 16.4 16.2 -1.6696 25.6459 32.2580 -99.000 -99.00 -99.00 16.6 16.4 -1.6659 25.6503 32.2596 -99.000 -99.00 -99.00 16.8 16.6 -1.6626 25.6545 32.2616 -99.000 -99.00 -99.00 17.0 16.8 -1.6582 25.6597 32.2639 -99.000 -99.00 -99.00 17.2 17.0 -1.6548 25.6637 32.2650 -99.000 -99.00 -99.00 17.4 17.2 -1.6533 25.6645 32.2654 -99.000 -99.00 -99.00 17.6 17.4 -1.6526 25.6656 32.2658 -99.000 -99.00 -99.00 17.8 17.6 -1.6511 25.6675 32.2661 -99.000 -99.00 -99.00 18.0 17.8 -1.6517 25.6719 32.2723 -99.000 -99.00 -99.00 18.2 18.0 -1.6501 25.6702 32.2673 -99.000 -99.00 -99.00 18.4 18.2 -1.6503 25.6733 32.2725 -99.000 -99.00 -99.00 18.6 18.4 -1.6506 25.6727 32.2714 -99.000 -99.00 -99.00 18.8 18.6 -1.6491 25.6690 32.2682 -99.000 -99.00 -99.00 19.0 18.8 -1.6494 25.6727 32.2691 -99.000 -99.00 -99.00 19.2 19.0 -1.6497 25.6719 32.2703 -99.000 -99.00 -99.00 19.4 19.2 -1.6498 25.6703 32.2687 -99.000 -99.00 -99.00 19.6 19.4 -1.6493 25.6702 32.2673 -99.000 -99.00 -99.00 19.8 19.6 -1.6485 25.6704 32.2667 -99.000 -99.00 -99.00 20.0 19.8 -1.6481 25.6711 32.2670 -99.000 -99.00 -99.00 20.2 20.0 -1.6489 25.6711 32.2676 -99.000 -99.00 -99.00 20.4 20.2 -1.6483 25.6722 32.2677 -99.000 -99.00 -99.00 20.6 20.4 -1.6472 25.6728 32.2676 -99.000 -99.00 -99.00 20.8 20.6 -1.6472 25.6720 32.2678 -99.000 -99.00 -99.00 21.0 20.8 -1.6471 25.6742 32.2683 -99.000 -99.00 -99.00 21.2 21.0 -1.6464 25.6746 32.2689 -99.000 -99.00 -99.00 21.4 21.2 -1.6450 25.6757 32.2690 -99.000 -99.00 -99.00 21.6 21.4 -1.6442 25.6760 32.2688 -99.000 -99.00 -99.00 21.8 21.6 -1.6442 25.6764 32.2684 -99.000 -99.00 -99.00 22.0 21.8 -1.6417 25.6786 32.2675 -99.000 -99.00 -99.00 22.2 22.0 -1.6416 25.6792 32.2692 -99.000 -99.00 -99.00 22.4 22.2 -1.6437 25.6789 32.2727 -99.000 -99.00 -99.00 22.6 22.4 -1.6430 25.6781 32.2700 -99.000 -99.00 -99.00 22.8 22.6 -1.6431 25.6786 32.2696 -99.000 -99.00 -99.00 23.0 22.8 -1.6430 25.6784 32.2690 -99.000 -99.00 -99.00 23.2 23.0 -1.6430 25.6777 32.2685 -99.000 -99.00 -99.00