CalCOFI 1507OC General Cast Notes: This cruise occupied 71 stations: 63 
standard, & 8 SCCOOS.&nbsp; The stations were occupied in a non-traditional 
sequence because of ship equipment failure and personnel delays. Offshore 
stations 86.7 110, 83.3 110, 76.7 100 were not occupied in order to maximize the 
number of stations finished.&nbsp; The Pt Dume SCCOOS station at 85.4 35.8 was 
not occupied since transited from 86.7 70.0 south to San Diego. No stations or 
net tows were missed because of bad weather. Ancillary PRPOOS net tows on lines 
86.7 & 83.3 were skipped and no deep CTD casts were performed to conserve 
shiptime. A standard 515m cast was performed on 90.0 90.0. PRPOOS net tows were 
done on all cardinal stations on lines 80.0 and 90.0. CalCOFI 1507OC was 
CalCOFI's first cruise on OSU R/V Oceanus. Two day loading and setup were 
performed at 10th Ave Marine Terminal San Diego. R/V Oceanus two-conductor 
termination, deck unit, CTD computer, and depth-readout box were used on SIO-
CalCOFI's 24-bottle CTD-Rosette. There were no issues with the conductive wire 
but when the hydro winch (CTD winch 2) was used, the deck unit no longer talked 
to the CTD. This was only an issue during the daily primary productivity cast 
when trying to warm up the CTD during the secchi cast - this was not possible. 
The CTD deck unit was kept off during the secchi cast then started after hydro 
wire was pulled. R/V Oceanus winches are electric so the switching from one 
winch to another might affect the ground or junction box - no answer was found. 
The electric winches have very fine control and were extremely quiet. Their 
remote depth readout is fast so it was not necessary to add 1m to the target 
depth on the upcast. The primary oxygen sensor failed on cast 4, was bad on cast 
5, and replaced on cast 6. Secondary oxygen sensor worked fine on all casts so 
use secondary oxygen sensor on casts 4 & 5. The CTD configuration throughout the 
cruise was standard: Seabird 911+ (new pressure case since 1501) with dual T, C, 
O2, & pumps;&nbsp; Wetlabs C-Star 25cm transmissometer; Biospherical QSP200L 
PAR;&nbsp; Datasonics/Benthos Altimeter; WET Labs ECO-AFL/FL; Seabird&nbsp; pH; 
Satlantic ISUS v2 & battery. Please refer to the xmlcon files or cruise&nbsp; 
prospectus for additional info. Other than the failure of the primary oxygen 
sensor on casts 4 & 5, all sensors worked well. A new cable on the C-Star 
transmissometer seemed to eliminate the low voltage spikes at depths below 400m 
on the downcast seen on previous cruises. The Satlantic ISUS nitrate sensor lamp 
hours have reached over 800 hours so it will be sent back to Satlantic for lamp 
replacement. The ISUS was mounted vertically, with optics pointing down.

Note: SIO-CalCOFI CTD-Rosette was running on R/V Oceanus CTD system - deck unit, 
dual-screen computer, remote-depth readout via serial com port, GPS via serial 
com port. Seasave data acquistion had to be restarted often to handshake 
properly with GPS NMEA or else it would timeout. This was the only issue (other 
than going offline when the 2nd winch was operating) notice with the Oceanus 
deck unit hosting our 911+. Our seasave screen display configuration was used 
and coefficients were imported.

05/22/2017 Update: There was noise in longitude data on 12 CTD downcasts - the majority of the 
CTD longitudes were fine but Casts 001d, 013d, 018d, 027d, 029d, 031d, 044d, 046d, 055d, 060d, 062d, 067d
had bad values. These have been corrected in the latest 20-1507OC_CTDFinalQC.zip - asc, csv, & dbcsv files.

06/28/2017 Update: In Mar 2015, the pressure sensor was recalibrated. Unfortunatly, the new coefficients
were not updated during the cruise. When reprocessed, there was no significant change in the pressure or
depth values, thankfully. But the CTD raw cast file zips were updated with a corrected .xmlcon file.
An updated 20-1507OC_CTDCast.zip file was uploaded online and errata noted.

	
	Cast Notes:

	Cast 01 - no issues reported on Console Ops.
	
	Cast 02 - no issues reported on Console Ops; secondary oxygen sensor may have some bad data points; when matched to bottle O2, some values were slightly higher at surface (biofouling?)
	
	Cast 03 - no issues reported on Console Ops; secondary oxygen sensor may have some bad data points; when matched to bottle O2, some values were slightly higher at surface (biofouling?)

	Cast 04 - 93.3 28.0: all sensors look good except primary oxygen - displaying negative values.

	Cast 05 - 93.3 30.0 primary oxygen sensor still reading negative, replaced post-cast

	Cast 06 - ISUS was left plugged in so it was unplugged and restarted during bottle prep; oxygen sensor #1590 was installed, #680 was removed precast. It was discovered that the secondary oxygen coefficients were from a previous calibration so coefficient from the most recent calibration were imported. Casts 1 - 5 xmlcon files were updated - 2nd O2 sensor #1075 coefficients should be May 2015 not Mar

	Cast 08 - ISUS not charged between stations, no data

	Cast 08-09 - Family emergency delay, Oceanus' Chief Engineer taken to San Diego after sta 93.45 & replacement flew in next day. Returned to station 93.50 36 hours later.

	Cast 09 - bottle #5 trigger was stuck during prep, cleaned, seemed to fire okay - O2 draw temperature looked good.

	Cast 10 - bottle #1 broke(!), samples questionable. No obvious reason - CTD did not hit the ship - but the bottle was cracked and the grey PVC end tube broke free from white PVC body. New bottle installed post-cast.

	Cast 11 - bottle #16 did not close so the CTD was sent back down and #21 tripped at 39m. CTD continuous data "yo-yo".

	Cast 12 - CTD AT DEPTH event was late, ~440m on upcast because event log tablet needed to be restarted.

	Cast 13 - Event log program on CTD computer was restarted but "Start" was not pressed so GPS was not updating.

	Cast 14 - calm night, lots of pyrosomes; unusual stratified salinity layers in upper 100m. Bottle #7 (200m) O2 draw temperature was high so most likely mistripped.&nbsp; Pylon was Q-Tip cleaned post-cast.

	Cast 15 - ISUS not charged between stations but worked. Hard to get a good Knudsen bottom reading, over 4000m deep here.

	Cast 17 - cast delayed due to winch readout issues; cast done but no wire out or wire speed. Fixed post-cast.

	Cast 19 - O2 sensors not agreeing initially, ~0.1ml/l off at start

	Cast 21 - bottle #23 did not close at surface so #24 was tripped

	Cast 22 - waited ~20mins to deploy while 1st mate was being trained to setup into the wind & swell

	Cast 25 - flurometer spikes on downcast - noise or bugs? pH cap left on - no pH sensor data.

	Cast 26 - ~3min delay with CTD acquiring data at surface while the GPS-Event Tablet was rebooted. Some ship rolls in moderate seas. Doug on winch adjusting CTD depth as wire settles - nice! Bottle #16 possible mistrip, O2 draw temperature high.

	Cast 27 - ship rolls even though relatively calm, data loops as we sit in the trough. Winch speed spike to 80m/min for a brief period after 100m, winch operator told to keep it below 60.

	Cast 28 - bottles #16 & #22 did not close so CTD was sent back down and #23 & #24 were tripped at 28m & 1m respectively.

	Cast 29 - pylon "crown" replaced with backup to alleviate mistrips

	Cast 31 - ISUS battery deployed unplugged, anode fried; battery switched post-cast. No ISUS data this cast.

	Cast 35 - unusual inversion at ~290m. Bottle #17 tripped but didn't close.

	Cast 36 - Knudsen read 756 so target depth was 745 but altimeter kicked on at ~720m, reading only 25m off the bottom so CTD was stopped at 735m. Soft bottom or large wire angle - wire out 776, CTD depth reading 735.

	Cast 37 - bottles #1, 16,& 17 didn't close; bottle #17 27m prodo depth collected in bottle #24 after sending CTD back down. Pylon crown switched back to previous one and problem triggers replaced from backup inventory.

	Cast 38 - shallow 9 bottle cast on sta 86.7 50.0 but all bottles tripped to test rebuilt crown - all bottles closed.

	Cast 39-40 - A failure of the ship refrigeration unit require a port call repair to Port Hueneme, 16 hour delay between Cast 39 87.55 & Cast 40 87.60.

	Cast 41 - after station 87.60 there was 2nd ship equipment failure of the main generator cooling pump seal, another port call to Port Hueneme for repairs was required(!), 22 hour delay to get the part couriered from Fresno and installed during a stormy Saturday. Station schedule redone to avoid rough weather offshore - coastal run first, heading north then out on line 77 (76.7) - doing the remaining line north to south.

	Cast 44 - up and downcast different, internal wave.

	Cast 45 - Santa Barbara Basin, extremely calm sunrise station with thunder showers and lightning on the coast nearby. Relative humidity in mid 90%s.

	Cast 50 - wire out & Seabird depth readouts not working

	Cast 51 - Nice chl peak at 38m, with spikes/noise at 122, 167, & 375m - will check the connector post-cast. Relatively calm but some big rollers. Upcast different than downcast - 350m feature noted.

	Cast 52 - rolling so downcast speed being adjusted to reduce tension spikes; working quick so we can make prodo station, +-1m okay on bottle depths.

	Cast 53-54 - mid-size rollers noted

	Cast 55 - pH profiles have been looking odd - sensor needs to be sent back for maintenance post-cruise. GPS failure on CELog - no readout even after reboot. Turned out the rain had seeped into the wetlab and shorted out the GPS feed wire. Daryl was woken up and he reterminated the GPS wire. Light rain and moderate seas.

	Cast 57 - Prodo+DIC+Cardinal! station

	Cast 59 - higher frequency rolls. breather #18 closed but top valve opened

	Cast 60 - barometer is finally reading to 10th on the MET screen thanks to Daryl (and my belated request). Some high freq rolls but relatively calm. Bottle #7 didn't close (200m). Triggers cleaned post-cast.

	Cast 63 - pH is reading way too high

	Cast 64 - short period rolls

	Cast 65 - calm but some big rolls; good bottom trace

	Cast 66 - soft bottom, poor bottom trace; last prodo station

	Cast 69 - calm night with some small rolls, deep chl max at ~100m

	Cast 70 - bottle #18 didn't close so CTD sent back to 25m to get that depth bottl #22, extra 10m tripped as well bottle #23

	Cast 71 - Last station this cruise; bottle #21 didn't close so CTD was set back at surface for bottle closure at 2m bottle #21.

	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:
	Sta 30 & 31 both labeled 90.0 28.0; 31 should be 90.0 27.7
	
	07Aug2015
	
	19Aug2015 update
	On stations 53, 58, & 64 Seasave added some extra lines in the hdr. Nothing too important but it did require us to reprocess these stations for correct labeling.

	
