CalCOFI 1601RL successfully completed all 104 scheduled stations, 95 standard & 9 SCCOOS. NOAA RV Reuben Lasker sailed Jan 6th, performing an acoustic calibration in San Diego Bay anchorage off Shelter Island. High winds and stormy weather Jan 6th postponed departure out of San Diego Bay until daybreak Jan 7th. The station order was standard south-north, west-east-west. After 74 southern stations were completed at 76.7 49.0, the CTD-rosette seawater sampling 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.
Platform: NOAA Ship Reuben Lasker; Project #: RL-16-01 (OMAO), 1601RL (SWFSC); Project Title: Winter CalCOFI, FRD

Data Files & Links: 1601RL CTD raw cast files zipped; 1601 FinalQC CTD + bottle data ; Preliminary Contour Plots
Announcement: CalCOFI 1601RL Cruise Instructions
Cruise Dates: Wednesday, 06 Jan 2016 - Saturday, 30 Jan 2016
Loading: Monday, 04 Jan 2016 - Tuesday, 05 Jan 2016 ; 10th Ave Marine Terminal, San Diego, CA
Offloading: 01 Feb 2016; 10th Ave Marine Terminal, San Diego, CA
Partiicpant Forms: NOAA Medical Forms - required for all cruise participants sailing Jan 06 2016
Ship: RV Reuben Lasker
Station plan: 104 Stations (95 CalCOFI + 9 SCCOOS)
Cruise Map:
Contacts: Dave Grifftith, Chief Scientist, NMFS
  James R Wilkinson, IOD (SIO Technical Coordinator)

Please note that the anomalies are based on 50-year harmonics (1949-1999) and these data are 1m binavg Seasoft-processed CTD data that have not gone through thorough quality control checks or bottle corrections. They are presented to give a general impression of current conditions. Final data plots will be published after all data are processed.

10 & 100 meter Preliminary CTD Data & Anomaly (50yr mean) Contours (Click for larger image)
200 meters (Click for larger image)
300 meter (Click for larger image)


CTD Processing Summary CalCOFI 1601RL CTD Final Data - 14Mar2017
Download 1601RL CTD raw cast files zipped (rev 22Mar2017) Download 1601 FinalQC CTD + bottle data  (22Mar2017 revision)

General CTD Notes - data acquisition notes, logistics, processing - see below.
These regressions are generated from final CTD vs bottle data and have gone through final reprocessing - very little changed. CTD temperatures and salinities do not usually change from preliminary to final data but oxygen, estimated chlorophyll-a, estimated nitrate may change significantly after point-checking. Questionable or mistrip bottle data were removed from these comparisons but may be visible on the CTD.csv plots. Questionable or bad data have been data coded in the CTD.csvs. For this cruise, both primary & secondary sensor profiles vs bottle data were generated and archived in the downloadable CTD+Bottle data files. These plots are under the "csv-plots\primary_plots" & "csv-plots\secondary_plots" subdirectories.

Final data include the 10May2016 reprocessed secondary CTD oxygens; 22Mar2017 reprocessed cast 099

CTD sensor corrections derived by comparing CTD sensor data, 4sec average prior to bottle closure, to bottle samples
Dual T, S, & O2 Primary Sensor Secondary Sensor
Salinity offset (bottle - CTD salinity; > 350m only; Seabird SBE4) -0.0007 0.002354
Oxygen ml/L (dual Seabird SBE43; 2° O2 Calib Off) y = 1.0361x - 0.0043
R² = 0.9999
y = 1.0716x - 0.0235
R² = 0.9996
Oxygen umol/Kg (dual Seabird SBE43; 2° O2 Calib Off) y = 1.0376x - 0.0851
R² = 0.9999
y = 1.0731x - 0.9237
R² = 0.9996
Single sensors Linear Polynomial
Nitrate - ISUS 4sec ave voltage vs Bottle Nitrate (Satlantic MBARI-ISUS v2) y = 29.475x - 2.8237
R² = 0.9922
Fluorometer - linear & polynomial regressions

y = 7.9516x - 0.2637

R² = 0.9160

y = 6.1733x2+6.3849x-0.1981

R² = 0.9205

  Secondary CTD O2 Sensor vs Bottle O2
MBARI-ISUS Voltage vs Bottle NO3 Wetlabs ECO/FL Fluorometer Voltage vs Chlorophyll-a

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