CalCOFI 1202NH

Summary:	All 75 stations were occupied, 66 standard & 9 SCCOOS 20m isobath stations
Data Links:	1202NH CTD Cast Files; 1202NH finalQC bottle-corrected CTD csvs, plots, & metadata
Cruise Dates:	Departs Nimitz Marine Facilities, Pt Loma - 0800 Friday 27 January 2012
	Returns to Nimitz Marine Facilities, Pt Loma - Tuesday 14 February 2012
Loading Dates:	24 - 26 Jan 2012 (Tues-Thurs) at SIO & New Horizon, MarFac, Pt. Loma
Ship:	SIO RV New Horizon
Participant Forms (pdfs):	SIO S, A,& D Policy Form; Physical Ability Form; Medical History (optional)
Station plan:	75 Standard (66 CalCOFI + 9 SCCOOS)
Station Activities:	Breakdown of per station activities
Cruise Map:

Contacts:	Dave Wolgast, IOD; Chief Scientist
	Dave Griffith, NMFS Technical Coordinator

Clickable Station Data Map
This map may not reflect the actual cruise track and stations completed.

CTD Processing Summary CalCOFI 1202NH CTD Data - FinalQC 2017 update
Download 1202NH CTD raw cast files zipped		Download 1202NH FinalQC CTD + bottle data
General CTD Notes - data acquisition notes, logistics, processing - see below
CTD sensor corrections derived by comparing 4 secs of CTD sensor data (prior to bottle closure) to bottle samples
Dual T, S, & O2	Primary Sensor	Secondary Sensor
Salinity offset (bottle - CTD salinity; > 350m only; Seabird SBE3+ & SBE4)	-0.0011	-0.00003
Oxygen mL/L (dual Seabird SBE43)	y = 1.0391x - 0.0203 R² = 0.9998	y = 1.0447x - 0.026 R² = 0.9998
Oxygen umole/Kg (dual Seabird SBE43)	y = 1.042x - 0.9306 R² = 0.9998	y = 1.0476x - 1.1793 R² = 0.9998
Single sensors
Nitrate - ISUS 4sec ave voltage vs Bottle Nitrate (Satlantic MBARI-ISUS v2)	y = 29.3x - 7.9964 R² = 0.9899
Fluorometer - linear & polynomial regressions	y= 5.9586x - 0.0812 R² = 0.6469	y= 5.0937x² + 4.2051x - 0.0098 R² = 0.6637




CalCOFI 1202NH CTD Notes SIO RV New Horizon Winter Cruise, 75 scheduled stations all completed. New winch operator so occasional stoppage & recovery issues at the beginning of the cruise. 16Mar2017 Re-processing update: the cruise was reprocessed using the original final regression coefficients and sta.csvs. Casts 004, 005, 006, 007 were re-merged with sta.csvs since the 270m bottle oxygen value was bad and throwing off the sta-corrected CTD oxygens. These stations were replotted and looked much better. In addition to the 82-column CTD.csv format update, adding data quality codes to the CTD.csvs. The secondary sensor data plots were also generated. Lastly, the filenames were updated to YY-YYMMSC_LLLLSSSS_###DU and the .asc files voltage headers were relabeled. The original unlabeled voltage .asc files are also in the archive under the "original_asc-hdr" folder. Cast 1: pH sensor not uncovered during cast - no data Cast 1 - 3: O2 coefficients incorrect for the first 3 casts, fixed after cast 3 Cast 21 - 3500m deep cast; ISUS+battery, PAR, pH, & altimeter removed, cables dummied. 1 hour 12mins to get from 2-3500m. Cast 24 - big rolls, rough weather Cast 26 - only 13 bottles tripped due to Navy restricting station 90.45 time. 37min cast. Cast 28: pH sensor problem at ~260m on downcast - jelly or bio-fouling? Cast 29: bottle tripped at 75m not 70m by mistake Cast 37: Santa Monica Basin station, 759m cast, calm night Cast 42: extra surface bottle tripped because #21 did not close until #22 tripped Cast 44: bottles 20 & 24 did not close; carousel cleaned post-cast Cast 45: all bottles tripped even though only 21 were needed, all closed. Cast 49: started 3x, 1st winch failure at 66m; 2nd data collection not started; 3rd worked fine Cast 50: rough and windy; Oozeki trawled first. Cast 51: really rough, CTD down at 30-40m/min. Nets cancelled. Cast 52: really rough, severe wire angles on upcast Cast 55: Bottle #7 only 1/2 full, bottom ajar? or closed when coming out? Cast 62: emerald green ocean, occasional big rolls Cast 66: 1000m cast instead of 3500m, sensors left on; duplicate tripped at 270m because of non-confirmation of the 1st 270m closure. Cast 74: Beaufort 6! Rough & windy Cast 75: Rough & windy.

Cruise Resources