PLEASE NOTE: the secondary CTD oxygen sensor data were reprocessed due to a
coefficient error in the first preliminary run. 10May2016 data files are good 
and replace the earlier preliminary data files and plots. 

The CTD data have been processed using Seabird's recommended modules
for the 911+ operating at 0-1000m. Preliminary bottle data have been used to 
bottle-correct CTD sensor data but these are not final data. After the bottle
data have been point-check thoroughly and finalized, the CTD sensor data will be
corrected once more. The final correction will be available as soon as possible.
In the meantime, use these data for basic analysis but do not consider them final-
quality unless you do not bottle-corrections applied.

CalCOFI 1601RL: 06-30 Jan 2016 on NOAA RV Reuben Lasker; 104 of 104 scheduled
stations were occupied in standard station order - south to north, offshore then
onshore. Please refer to the 1601RL CTD Preliminary Processing web page on
calcofi.org for more information.
It was a pretty clean cruise in terms of CTD data. See notes here and on the
web.

Cast notes:

Cast 001 & 002: computer time was off, files fixed but raw data will still 
     display Aug 2015 dates
Cast 041 - winch readout failed during the downcast, CTD stopped and held at
     ~440m for ~15mins so data acquisition was stopped. When the winch readout
     was fixed, the CTD returned to surface and the cast restarted.
     Cast 041A is the aborted 1st cast; cast 041 is the complete restarted cast
     with bottle closures.
Cast 044 - ISUS battery was not plugged in, no ISUS-NO3 data.

General Cruise and Console Notes:
CalCOFI 1601RL General Cruise & Cast Notes:

Stations and Station Order: this cruise occupied 104 stations: 95 standard & 9 SCCOOS.  The station order was standard south-north, west-east-west. After the standard southern 74 station pattern was completed at 76.7 49.0, the rosette seawater sampling was reduced from 24 to 12 bottles. After sta 70.0 51.0, most of the SIO scientific personnel disembarked in Monterey. 

The Pt Dume SCCOOS station at 85.4 35.8 was occupied last, during the transit home as sta 104.

CTD General Notes and Problems:

The CTD configuration throughout the cruise was standard: Seabird 911+ (new pressure case since 1501) with dual T, C, O2, & pumps;  Wetlabs C-Star 25cm transmissometer; Biospherical QSP200L PAR;  Datasonics/Benthos Altimeter; WET Labs ECO-AFL/FL; Seabird SBE 18 pH; Satlantic ISUS v2, new lamp AND spectrophotometer (since 1511OC) & Wetlabs (custom) batteries. Please refer to the xmlcon files or cruise  prospectus for additional info & metadata. There were no sensor failures this cruise but the primary oxygen sensor and secondary sensor were noticeably different (~0.3 ml/l) - both responded properly so refer to the bottle-corrected data for best data. Jan 6th, day of departure, was extremely stormy so the ship stayed in San Diego Bay till early Jan 7th. Due to this loss of shiptime the 3500m deep casts on sta 90.90 was not performed. The transmissometer did not have the dropout problems of the previous cruise usually seen after the 3500m deep cast. The ISUS was mounted vertically, with optics pointing down. pH sensor was lab-calbrated before the cruise and appears to have worked fine. Comparison to check DIC-pH samples are pending.

Logistics: CalCOFI 1601RL was CalCOFI's first cruise on NOAA R/V Reuben Lasker. We did a Dec pre-holiday load & setup since the departure was scheduled so soon after the post-holiday return Jan 4th. Two days of loading and setup were performed at 10th Avenue Marine Terminal on Dec 21 & 22. Final setup and securing were performed Jan 4-5. We sailed Jan 6th, performing an acoustic calibration in San Diego Bay anchorage off Shelter Island. High winds and stormy weather Jan 6th delayed our departure out of San Diego Bay until daybreak Jan 7th.
RV Reuben Lasker's two-conductor termination was used on SIO-CalCOFI's 911+ CTD, deck unit, (2nd) CTD computer, and depth-readout box along with SIO-CalCOFI's 24-bottle rosette. There were no issues with the conductive wire except a tendency for the forward wire guide to flip upward if the wire was slack. It was important to keep the CTD wire taunt when beginning to lift the rosette off the deck.
SIO-CalCOFI ran their own data network independent of the ship's network although some Lasker ethernet ports (constant temperature room & chl van) were connected to the SIO-CalCOFI router. Some scientific computers were connected to both the data network and ship's network for internet access. This networking scheme will be implemented on RVs Shimada and Sally Ride. Both the CESL sample log tablet and CELog event tablet performed more reliably when hard-wired to the data network. Wifi connections on both tablets would lose drive mapping to the data server.

Note: SIO-CalCOFI CTD PC & deck unit were interfaced with R/V Reuben Lasker CTD monitor, keyboard, mouse, sea cable, & GPS. KVM connections from the Lasker's rack-mounted CPU & deck unit were moved to our systems. Our remote-depth readout connected to the deck unit was installed into the winch shack by the ET. The remote depth readout was off by 2m and may need to be reprogrammed. Other than the primary Win7 blade PC found "DOA" when we returned from Christmas break, there were no problems with the CTD/Deck Unit/Sea Cable configuration. GPS was connected to a serial to USB FTDI dongle on the lower front usb port.

RV Reuben Lasker does not have a Knudsen 3 or 12kHz echosounder to find the bottom depth. The EK60 system or bridge charts provided bottom depths.

10 May 2016 - the secondary CTD oxygen sensor was used on CalCOFI 1604SH so the xmlcon coefficients were carried over from 1601RL. It was discovered the wrong sensor serial number was set on 1601RL ie wrong coefficients. So all the casts were reprocessed using the correct secondary CTD oxygen coefficients. All plots and data files have been updated. All other sensor data are unaffected. These data should be close to final although once final bottle are available, the bottle-CTD merge will be redone.

Cast Notes:

Cast 901 - San Diego Bay anchorage acoustic calibration sound velocity CTD cast to 8m. No water samples, just a sensor profile.

Cast 001 - 002: computer date & time were wrong; the primary CTD PC was replaced by the backup system which had the wrong date & time. Time was fixed before cast 003.

Cast 005 - wire angle going up & down

Cast 006 - bottle #5 O2 draw temperature was warm = mistrip

Cast 007 - RV Lasker survey tech Jacyln M. performed the cast, trained by JRW

Cast 015 - bottle #18 mistrip, tripped but no closure; carousel crown swapped while trigger was replaced

Cast 016 - backup carousel crown problematic - bottles #16 & 17 did not close so the CTD was sent back down to 60m, 50m, 40m (bottles #21, 22, 33). Original crown was installed post-cast, post-rebuild.

Cast 017 - bottle #21 mistrip sp CTD sent back to 13m, tripped bottle #24 

Cast 018 - mistrips on bottles #5, 21, 13; CTD sent back to 84m & bottle #24 was closed, collecting seawater missed by #13. Carousel serviced again post-cast

Cast 019 - all bottles tripped & O2 draw temperatures look good; some "noise" in the surface data was noted at start

Cast 020 - early prodo cast, nets first

Cast 023 - no mistrips detected

Cast 027 - bottle #21 was open at surface so CTD was sent back down to 10m & #23 tripped for NCOG; #5 was opened, no samples; #6 O2 draw temperature was warm = mistrip, closed at shallower depth

Cast 028 - #5 mistripped again, no samples; #5 & #6 triggers were cleaned last cast but there was no time to replace triggers because of NCOG filttrations

Cast 029-034 - no mistrips dectected

Cast 035 - AB Allen was late getting out on deck - no one told him we were arriving on station. CTD wire was out of the sheave on 1st lift off deck - odd scraping noise, CTD was lowered, wire inspected for damage - looked fine, CTD slack taken up slowly and 2nd lift off deck was fine. JRW told the winch operator to stop at 480m but it kept going so the CTD probably landed on the bottom, according to the altimeter. CTD was brought up 5m to 480m and bottle #1 closed. This station is usually a full cast so station position may have been off. Data look fine and there were no visible signs of any damage.

Cast 037 - CTD was sent back down to 46m from 40m after 50m (prodo depths), bottle trip initially missed by operator.

Cast 039 - bottle #9 was a duplicate trip; bottle #4 O2 draw temp was warm, mistripped

Cast 041 - winch readout failure, cast stopped at 320m, CTD returned to surface, cast restarted. Aborted cast data file labeled 1601041A; full cast 1601041 includes all bottle closures & mrk file. Cause : emergency stop button had been pressed on the bridge accidentally (apparently too easy to do when leaning over the console), twisting the button to reset took awhile to figure out.

Cast 044 - ISUS battery not plugged in; no ISUS-NO3 data; battery "C" was installed post-cast.

Cast 045 - bottle #21 was tripped and closed at surface but was empty (a real head-scratcher; drained or tripped out of water); bucket sample taken for surface samples

Cast 049 - cold,foggy night; big rolls +-5m

Cast 053 - bottle #11 & 12 were extra bottle trips

Cast 061 & 065 - big, slow ship rolls

Cast 066 - big slow rolls; CTD pressure offset adjusted precast from -1.55 to -1.70 so -0.15

Cast 075 - switched to table-driven 12-bottle rosette casts; bottom depth was only 35m though

Cast 076 - wire angle at start of cast ~15deg outboard

Cast 082 - bottle #10 didn't close (trigger 19)

Cast 084 - big roll cause CTD to come out, pumps went off so restarted and told winch operator to keep it covered

Cast 085 - rough night, big rolls

Cast 087 - leg 2 begins as most SIO personnel were dropped off in Monterey; 50m bottle #7 did not close so CTD was sent back to 50m and bottle #11 closed

Cast 090 - file misnamed 160190 then renamed post-cast to 1601090; filename embedded in 1601090.hex file is incorrect 160190.hex

Cast 094 - bottle #7 didn't close

Cast 095 - bottle #7 didn't close again so table-driven was changed to trigger 12 instead of 13; lanyard for #7 on trigger 12 from now on.

Cast 098 - 099 - shallow casts

Cast 099 - Line & Station were mislabeled 63.3 50.0, correct sta is 60.0 50.0 - corrected in all data including 1601099.hex.

Cast 104 - final cast

File notes:
Seasoft-generated asc-hdr files were not renamed to YY-YYLLLLSSSS_###d or u.asc & .hdr. Voltages were not relabled. This practice makes it difficult to reprocess & merge with bottle data if necessary.

Mislabels found and corrected:
 Cast 075 was initially mislabled as sta 76.7 50.0 but hex editor corrected to 73.3 50.0
 Cast 099 was mislabeled as sta 63.3 50.0 but corrected in post-processing to 60.0 50.0

Cast 090 filenames were mislabled 160190.hex, .hdr, .mrk... and renamed 1601090.hex... post-cast

09Jan2016