*2020/08/11 16:39:17.28 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2020/03/18 17:37:00.000 NUMBER OF RECORDS : 1 DATA DESCRIPTION : Bottle:Wire + CTD:Down FILE TYPE : ASCII NUMBER OF CHANNELS : 19 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 13 13 2 Pressure decibar 1.024 1.024 3 Depth metres 1 1 4 Temperature:Primary 'deg C (ITS90)' 7.7379 7.7379 5 Salinity:T0:C0 PSS-78 28.681 28.681 6 Oxygen:Dissolved:SBE mL/L 7.48 7.48 7 Oxygen:Dissolved:SBE umol/kg 326.6281 326.6281 8 Fluorescence:URU:Wetlabs mg/m^3 10.969 10.969 9 Salinity:Bottle PSS-78 -99 -99 10 Flag:Salinity:Bottle ' ' 11 Nitrate_plus_Nitrite umol/L -99 -99 12 Flag:Nitrate_plus_Nitrite ' ' 13 Silicate umol/L -99 -99 14 Flag:Silicate ' ' 15 Phosphate umol/L -99 -99 16 Flag:Phosphate ' ' 17 Chlorophyll:Extracted mg/m^3 12.37 12.37 18 Flag:Chlorophyll:Extracted ' ' 19 Phaeo-Pigment:Extracted mg/m^3 1.7 1.7 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 5 I I 0 2 -99 ' ' 7 F R4 1 3 -99 ' ' 7 F R4 1 4 -99 ' ' 9 F R4 4 5 -99 ' ' 9 F R4 4 6 -99 ' ' 7 F R4 2 7 -99 ' ' 6 F ' ' 1 8 -99 ' ' 8 F R4 3 9 -99 ' ' 9 F R4 4 10 ' ' ' ' 3 NQ C ' ' 11 -99 ' ' 7 F R4 2 12 ' ' ' ' 3 NQ C ' ' 13 -99 ' ' 7 F R4 2 14 ' ' ' ' 3 NQ C ' ' 15 -99 ' ' 8 F R4 3 16 ' ' ' ' 3 NQ C ' ' 17 -99 ' ' 7 F R4 2 18 ' ' ' ' 3 NQ C ' ' 19 -99 ' ' 7 F R4 2 $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 : 2020-007 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : Strait of Georgia Zooplankton SCIENTIST : Young K. PLATFORM : Neocaligus *LOCATION GEOGRAPHIC AREA : Strait of Georgia STATION : 28 EVENT NUMBER : 34 LATITUDE : 49 24.10200 N ! (deg min) LONGITUDE : 123 45.29400 W ! (deg min) WATER DEPTH : 134 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-25 SERIAL NUMBER : 0573 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2020/08/11 16:06:28 1 1 CLEAN 5.2.4 2020/08/11 16:08:29 1 1 CHGUNITS 3.1.2 2020/08/11 16:17:53 1 1 REMOVECH 8.2 2020/08/11 16:18:28 1 1 REORDER 1.3.1 2020/08/11 16:26:52 ? ? SORT 3.6 2020/08/11 16:26:59 1 1 HDREDIT2 3.2 2020/08/11 16:39:17 ? ? $END $REMARKS -CLEAN functions: 2020/08/11 16:08:28 20 Reset #RECS, MIN & MAX values in header. Change character data from " " to "0" in channels Flag:* Set event to last 4 characters of file name Set header Start and End times from the data. -CHANGE units: Temperature reference channel: Temperature:CTD [deg C (ITS90)] Salinity reference channel: Salinity:CTD [PSS-78] 'Oxygen:Dissolved:Volume:CTD' changed from mL/L to umol/kg -REMOVECH 2020/08/11 16:18:28 The following CHANNEL(S) were removed: Date TIME:UTC Oxygen:Dissolved:Volume:CTD [umol/kg] -SORT parameters: 2020/08/11 16:26:59 Sorted in ascending order of channel Pressure* -HEADER EDITS: 2020/08/11 16:39:17 Applied edit header: D:\Telework\2020-007\Processing\doc\HYDRO\2020-007-bot-hdr.txt Channel 2: Pressure [decibar] Name: Pressure:CTD ==> Pressure Format: F9.4 ==> F7.1 Channel 3: Depth [metres] Name: Depth:CTD ==> Depth Channel 4: Temperature:Primary [deg C (ITS90)] Name: Temperature:CTD ==> Temperature:Primary Channel 5: Salinity:T0:C0 [PSS-78] Name: Salinity:CTD ==> Salinity:T0:C0 Channel 8: Fluorescence:URU:Wetlabs [mg/m^3] Name: Fluorescence:CTD ==> Fluorescence:URU:Wetlabs Channel 6: Oxygen:Dissolved:SBE [mL/L] Name: Oxygen:Dissolved:Volume:CTD ==> Oxygen:Dissolved:SBE Format: F9.4 ==> F7.2 Channel 7: Oxygen:Dissolved:SBE [umol/kg] Name: Oxygen:Dissolved:Mass:CTD ==> Oxygen:Dissolved:SBE $END *COMMENTS Analysis methods: ----------------------- Chlorophyll samples were filtered onto 25mm GF/F filters and stored in glass scintillation vials sy -20C prior to analysis. Samples were extracted in 90% acetone at -20C for 24 hours in the lab and analyzed on a Turner 10AU fluorometer calibrated with commercially pure chlorophyll a standard (Sigma). Fluorescence readings taken before and after acidification were used to calculate chlorophyll and phaeopigment concentrations (Holm-Hansen et al 1965). Chlorophyll samples were analyzed at IOS in Room 2423 ~1 week after the cruise. The average of two samples is reported. Variability is assessed as the CV% (std dev / mean*100). Flags and comments apply to chlorophyll values only. Chlorophyll values ranged from 3.21 to 23.40ug/l in 16 samples. Average %CV for this cruise was 6.51 with 0 duplicate pairs having a CV>10% and 0 duplicate pairs having a CV>30%. Our average dataset %CV is 3.80% for 2013 - 2018 so the overall quality of this dataset is good. This data set is small, 16 samples, with only 3 duplicates pairs analyzed (1 replicate was lost for sample 17). For details see worksheet “CV%” in file 2020-007 CHL QF*.xlsx. Salinity samples were collected in 200 mL type II glass bottles with disposable nylon inserts and screw caps supplied by Ocean Scientific International Limited. They were analyzed in a temperature-controlled lab on a Guildline 8400B Salinometer standardized with IAPSO standard seawater within 6-9 days after collection. For details, see document QF2020-007SAL*.xlsx. Nutrient samples were collected in plastic tubes and quick frozen in aluminum blocks stored in a -20C freezer. For samples 400m and deeper; a second set of samples were collected and stored cool for silicate analysis. All samples were returned to the Institute of Ocean Sciences. They were analyzed using an Astoria analyzer following methods described in IOS Nutrient Methods (1996) Barwell-Clarke, J. and F. Whitney. For details see document QF2020-007_NUTS*.xlsx. References: 1. Barwell-Clarke, J. and Whitney, F. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences, No. 182, 43 pp. 2. Culberson, C.H. 1991. Dissolved oxygen. WOCE Hydrographic Programme Operations and Methods (July 1991). 15pp. 3. Holm-Hansen, O., Lorenzen, C.J., Holmes, R.W., and Strickland J.D.H. 1965. Fluorometric Determination of Chlorophyll. J.du Cons. Intl. Pour l’Epl. De la Mer. 30:3-15. * For PDF versions of these papers see folder \\Cruise_Data\DOCUMENTS\Analysis Reference Papers --------------------------------------------------------------------------------- CTD Data Processing Notes: ---------------------------- Oxygen:Dissolved, Conductivity and Fluorescence:URU:Wetlabs data are nominal and unedited except that some records were removed in editing temperature and salinity. CTD salinity values were higher than the 5 bottle samples by an average of 0.0036psu. Most of that difference is likely due to incomplete flushing of Niskin bottles so that samples represent conditions higher in the water column where salinity is lower. No recalibration was applied to the CTD salinity. Oxygen:Dissolved:SBE values cannot be confirmed as there was no calibration sampling for dissolved oxygen. The surface % saturation values appear reasonable. While the CTD fluorescence data are expressed in concentration units, they do not always compare well to extracted chlorophyll samples. For this cruise the CTD fluorescence data generally did compare well with extracted chlorophyll samples taken at the surface. Note that CTD data to accompany the surface bottles were selected from the shallowest data available after editing and bin-averaging. For events #13 and #32 no reliable downcast data were available above 3db so upcast data were selected. For details on data processing see document: 2020-007_Processing_Report.doc. !-1-- --2--- --3--- ---4---- ---5---- --6--- --7-- ---8--- ---9---- 10 --11-- 12 --13-- 14 ---15-- 16 --17-- 18 --19-- !Samp Pressu Depth Temperat Salinity Oxygen Oxyge Fluores Salinity Fl Nitrat Fl Silica Fl Phospha Fl Chloro Fl Phaeo- !le_ re ure: :T0:C0 : n: cence: :Bottle ag e_ ag te ag te ag phyll: ag Pigmen !Numb Primary Dissol Disso URU: ~o plus_ ~t ~i ~p Extrac ~a t: !er ved: lved: Wetlabs tt Nitrit ri ca ha ted ct Extrac ! SBE SBE le e te te te ed ted !---- ------ ------ -------- -------- ------ ----- ------- -------- -- ------ -- ------ -- ------- -- ------ -- ------ *END OF HEADER 13 1.0 1.0 7.7379 28.6810 7.48 326.6 10.969 -99.0000 0 -99.00 0 -99.00 0 -99.000 0 12.37 6 1.70