*2021/03/12 16:15:52.91 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 MATLAB *FILE START TIME : UTC 2019/04/05 20:55:18.542 NUMBER OF RECORDS : 121 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- ----------------- --------- ------- 1 Pressure decibar 2.0 26.0 2 Depth metres 2.0 25.7 3 Temperature 'deg C (ITS90)' -1.7540 -1.3653 4 Conductivity mS/cm 25.5068 25.8853 5 Salinity PSS-78 32.1582 32.2582 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 : CMPA6-Cst39 EVENT NUMBER : 22 LATITUDE : 69 29.97900 N ! (deg min) LONGITUDE : 124 17.26100 W ! (deg min) WATER DEPTH : 30.7 $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 16:15:53 121 121 $END $REMARKS -PRNTIOS_FMTS_201931CROW_SINGLE processing: 2021/03/12 16:15:52 $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 2.0 2.0 -1.7474 25.5070 32.1587 -99.000 -99.00 -99.00 2.2 2.2 -1.7472 25.5068 32.1582 -99.000 -99.00 -99.00 2.4 2.4 -1.7473 25.5075 32.1590 -99.000 -99.00 -99.00 2.6 2.6 -1.7473 25.5074 32.1587 -99.000 -99.00 -99.00 2.8 2.8 -1.7472 25.5075 32.1586 -99.000 -99.00 -99.00 3.0 3.0 -1.7472 25.5077 32.1588 -99.000 -99.00 -99.00 3.2 3.2 -1.7473 25.5079 32.1592 -99.000 -99.00 -99.00 3.4 3.4 -1.7475 25.5081 32.1593 -99.000 -99.00 -99.00 3.6 3.6 -1.7472 25.5088 32.1601 -99.000 -99.00 -99.00 3.8 3.8 -1.7474 25.5095 32.1611 -99.000 -99.00 -99.00 4.0 4.0 -1.7477 25.5101 32.1619 -99.000 -99.00 -99.00 4.2 4.2 -1.7476 25.5097 32.1613 -99.000 -99.00 -99.00 4.4 4.4 -1.7473 25.5102 32.1617 -99.000 -99.00 -99.00 4.6 4.6 -1.7475 25.5101 32.1614 -99.000 -99.00 -99.00 4.8 4.8 -1.7475 25.5106 32.1620 -99.000 -99.00 -99.00 5.0 4.9 -1.7475 25.5108 32.1622 -99.000 -99.00 -99.00 5.2 5.1 -1.7474 25.5116 32.1631 -99.000 -99.00 -99.00 5.4 5.3 -1.7474 25.5113 32.1624 -99.000 -99.00 -99.00 5.6 5.5 -1.7471 25.5107 32.1613 -99.000 -99.00 -99.00 5.8 5.7 -1.7470 25.5114 32.1619 -99.000 -99.00 -99.00 6.0 5.9 -1.7468 25.5116 32.1619 -99.000 -99.00 -99.00 6.2 6.1 -1.7468 25.5121 32.1625 -99.000 -99.00 -99.00 6.4 6.3 -1.7469 25.5124 32.1625 -99.000 -99.00 -99.00 6.6 6.5 -1.7467 25.5119 32.1624 -99.000 -99.00 -99.00 6.8 6.7 -1.7469 25.5122 32.1624 -99.000 -99.00 -99.00 7.0 6.9 -1.7470 25.5125 32.1626 -99.000 -99.00 -99.00 7.2 7.1 -1.7465 25.5123 32.1626 -99.000 -99.00 -99.00 7.4 7.3 -1.7466 25.5138 32.1625 -99.000 -99.00 -99.00 7.6 7.5 -1.7460 25.5130 32.1627 -99.000 -99.00 -99.00 7.8 7.7 -1.7449 25.5151 32.1633 -99.000 -99.00 -99.00 8.0 7.9 -1.7441 25.5161 32.1637 -99.000 -99.00 -99.00 8.2 8.1 -1.7425 25.5172 32.1638 -99.000 -99.00 -99.00 8.4 8.3 -1.7425 25.5174 32.1636 -99.000 -99.00 -99.00 8.6 8.5 -1.7419 25.5172 32.1635 -99.000 -99.00 -99.00 8.8 8.7 -1.7413 25.5187 32.1638 -99.000 -99.00 -99.00 9.0 8.9 -1.7394 25.5206 32.1646 -99.000 -99.00 -99.00 9.2 9.1 -1.7368 25.5233 32.1653 -99.000 -99.00 -99.00 9.4 9.3 -1.7355 25.5247 32.1655 -99.000 -99.00 -99.00 9.6 9.5 -1.7333 25.5266 32.1656 -99.000 -99.00 -99.00 9.8 9.7 -1.7298 25.5290 32.1659 -99.000 -99.00 -99.00 10.0 9.9 -1.7278 25.5323 32.1666 -99.000 -99.00 -99.00 10.2 10.1 -1.7270 25.5331 32.1676 -99.000 -99.00 -99.00 10.4 10.3 -1.7258 25.5347 32.1688 -99.000 -99.00 -99.00 10.6 10.5 -1.7244 25.5369 32.1697 -99.000 -99.00 -99.00 10.8 10.7 -1.7229 25.5390 32.1701 -99.000 -99.00 -99.00 11.0 10.9 -1.7206 25.5397 32.1703 -99.000 -99.00 -99.00 11.2 11.1 -1.7185 25.5422 32.1704 -99.000 -99.00 -99.00 11.4 11.3 -1.7181 25.5437 32.1708 -99.000 -99.00 -99.00 11.6 11.5 -1.7177 25.5440 32.1721 -99.000 -99.00 -99.00 11.8 11.7 -1.7156 25.5463 32.1744 -99.000 -99.00 -99.00 12.0 11.9 -1.7161 25.5517 32.1775 -99.000 -99.00 -99.00 12.2 12.1 -1.7182 25.5500 32.1800 -99.000 -99.00 -99.00 12.4 12.3 -1.7197 25.5483 32.1816 -99.000 -99.00 -99.00 12.6 12.5 -1.7259 25.5467 32.1828 -99.000 -99.00 -99.00 12.8 12.7 -1.7323 25.5419 32.1838 -99.000 -99.00 -99.00 13.0 12.9 -1.7349 25.5399 32.1844 -99.000 -99.00 -99.00 13.2 13.1 -1.7377 25.5384 32.1848 -99.000 -99.00 -99.00 13.4 13.3 -1.7407 25.5365 32.1846 -99.000 -99.00 -99.00 13.6 13.5 -1.7416 25.5349 32.1841 -99.000 -99.00 -99.00 13.8 13.7 -1.7415 25.5347 32.1839 -99.000 -99.00 -99.00 14.0 13.9 -1.7430 25.5341 32.1845 -99.000 -99.00 -99.00 14.2 14.1 -1.7458 25.5335 32.1857 -99.000 -99.00 -99.00 14.4 14.3 -1.7473 25.5328 32.1867 -99.000 -99.00 -99.00 14.6 14.5 -1.7484 25.5322 32.1873 -99.000 -99.00 -99.00 14.8 14.7 -1.7523 25.5305 32.1875 -99.000 -99.00 -99.00 15.0 14.8 -1.7540 25.5275 32.1875 -99.000 -99.00 -99.00 15.2 15.0 -1.7539 25.5284 32.1877 -99.000 -99.00 -99.00 15.4 15.2 -1.7538 25.5298 32.1883 -99.000 -99.00 -99.00 15.6 15.4 -1.7536 25.5300 32.1889 -99.000 -99.00 -99.00 15.8 15.6 -1.7531 25.5307 32.1895 -99.000 -99.00 -99.00 16.0 15.8 -1.7518 25.5328 32.1901 -99.000 -99.00 -99.00 16.2 16.0 -1.7491 25.5351 32.1912 -99.000 -99.00 -99.00 16.4 16.2 -1.7472 25.5373 32.1924 -99.000 -99.00 -99.00 16.6 16.4 -1.7467 25.5398 32.1930 -99.000 -99.00 -99.00 16.8 16.6 -1.7465 25.5394 32.1932 -99.000 -99.00 -99.00 17.0 16.8 -1.7454 25.5397 32.1931 -99.000 -99.00 -99.00 17.2 17.0 -1.7439 25.5409 32.1932 -99.000 -99.00 -99.00 17.4 17.2 -1.7436 25.5433 32.1936 -99.000 -99.00 -99.00 17.6 17.4 -1.7414 25.5431 32.1941 -99.000 -99.00 -99.00 17.8 17.6 -1.7386 25.5461 32.1942 -99.000 -99.00 -99.00 18.0 17.8 -1.7299 25.5534 32.1930 -99.000 -99.00 -99.00 18.2 18.0 -1.7227 25.5590 32.1911 -99.000 -99.00 -99.00 18.4 18.2 -1.7078 25.5666 32.1907 -99.000 -99.00 -99.00 18.6 18.4 -1.6915 25.5820 32.1938 -99.000 -99.00 -99.00 18.8 18.6 -1.6785 25.5992 32.1979 -99.000 -99.00 -99.00 19.0 18.8 -1.6716 25.6032 32.1994 -99.000 -99.00 -99.00 19.2 19.0 -1.6620 25.6070 32.1944 -99.000 -99.00 -99.00 19.4 19.2 -1.6374 25.6253 32.1862 -99.000 -99.00 -99.00 19.6 19.4 -1.5947 25.6423 32.1808 -99.000 -99.00 -99.00 19.8 19.6 -1.5676 25.6831 32.1825 -99.000 -99.00 -99.00 20.0 19.8 -1.5273 25.6978 32.1921 -99.000 -99.00 -99.00 20.2 20.0 -1.5134 25.7354 32.2031 -99.000 -99.00 -99.00 20.4 20.2 -1.5051 25.7474 32.2129 -99.000 -99.00 -99.00 20.6 20.4 -1.4898 25.7600 32.2199 -99.000 -99.00 -99.00 20.8 20.6 -1.4808 25.7720 32.2237 -99.000 -99.00 -99.00 21.0 20.8 -1.4814 25.7735 32.2256 -99.000 -99.00 -99.00 21.2 21.0 -1.4784 25.7778 32.2191 -99.000 -99.00 -99.00 21.4 21.2 -1.4626 25.7967 32.2301 -99.000 -99.00 -99.00 21.6 21.4 -1.4507 25.8084 32.2410 -99.000 -99.00 -99.00 21.8 21.6 -1.4440 25.8144 32.2394 -99.000 -99.00 -99.00 22.0 21.8 -1.4270 25.8241 32.2384 -99.000 -99.00 -99.00 22.2 22.0 -1.4087 25.8478 32.2464 -99.000 -99.00 -99.00 22.4 22.2 -1.3887 25.8624 32.2480 -99.000 -99.00 -99.00 22.6 22.4 -1.3797 25.8699 32.2469 -99.000 -99.00 -99.00 22.8 22.6 -1.3689 25.8808 32.2497 -99.000 -99.00 -99.00 23.0 22.8 -1.3653 25.8853 32.2534 -99.000 -99.00 -99.00 23.2 23.0 -1.3674 25.8849 32.2541 -99.000 -99.00 -99.00 23.4 23.2 -1.3736 25.8790 32.2540 -99.000 -99.00 -99.00 23.6 23.4 -1.3874 25.8703 32.2560 -99.000 -99.00 -99.00 23.8 23.6 -1.3948 25.8662 32.2578 -99.000 -99.00 -99.00 24.0 23.8 -1.3986 25.8630 32.2577 -99.000 -99.00 -99.00 24.2 24.0 -1.3989 25.8620 32.2573 -99.000 -99.00 -99.00 24.4 24.2 -1.3990 25.8636 32.2581 -99.000 -99.00 -99.00 24.6 24.4 -1.4000 25.8621 32.2580 -99.000 -99.00 -99.00 24.8 24.5 -1.4010 25.8604 32.2571 -99.000 -99.00 -99.00 25.0 24.7 -1.4013 25.8622 32.2582 -99.000 -99.00 -99.00 25.2 24.9 -1.4011 25.8611 32.2579 -99.000 -99.00 -99.00 25.4 25.1 -1.4011 25.8620 32.2577 -99.000 -99.00 -99.00 25.6 25.3 -1.4009 25.8609 32.2569 -99.000 -99.00 -99.00 25.8 25.5 -1.4011 25.8615 32.2582 -99.000 -99.00 -99.00 26.0 25.7 -1.4010 25.8616 32.2564 -99.000 -99.00 -99.00