1701RL
Cruise Summary
Summary:
CalCOFI 1701RL sailed from 10th Ave Marine Terminal, San Diego Jan 05 2017 at 1300PST.
The cruise was split into two legs due to severe weather off California Jan 20-24.
- Leg I Jan 05 – 20: RV Reuben Lasker completed 75 stations successfully before returning to San Diego ~1730PST Jan 20.
- Leg II 25 – 29 Jan: RV Reuben Lasker departed 10th Ave Marine Terminal at 0900PST 25 Jan and transited N to survey Lines 73, 70, 67, & 63. Remaining shiptime limited RV Reuben Lasker to 8 coastal stations & transects on these lines. CUFES surveying for eggs and performing two CTD profile-only casts per line (no seawater samples).
Cruise Dates:
05 – 29 Jan 2017 (Thur-Sun; 25 DAS)
Loading:
19 – 21 Dec 2016; 04 – 05 Jan 2017
Offloading:
30 Jan 2017
Ship:
Contacts:
Amy Hays, Chief Scientist, NMFS
Dave Wolgast, IOD (SIO Technical Coordinator)
Cruise Map:
Station Data Collected:
CTD Sensors:
- Temperature
- Conductivity/Salinity
- Dissolved Oxygen
- Fluorescence
- Transmittance
- PAR (Photosynthetically Active Radiation)
- Nitrate (ISUS)
- Altimetry
- pH
Bottle Samples:
- Salinity
- Dissolved Oxygen
- Nutrients
- Chlorophyll-a & Phaeopigments
- Primary Productivity
- Phytoplankton
- HPLC (High Performance Liquid Chromatography)
- DIC (Dissolved Inorganic Carbon)
- NCOG DNA/RNA
- LTER Ancillary
Nets:
- Bongo
- Manta
- Pairovet
- PRPOOS
Underway Data Collected:
- Surface & Meteorological Measurements
- Marine Mammal Visual & Acoustic Observations
- Seabird Visual Observations
- CUFES (Continuous Underway Fish Egg Sampler)
- ADCP (Acoustic Doppler Current Profiler)
- pCO2 (partial pressure of carbon dioxide)
- ALF (Advanced Laser Fluorometer)
- Fisheries Acoustic Observations (EK60)
- Primary Productivity
- LTER Ancillary
- DIC
Preliminary Plots
Please note: these data are 1m-bin-average Seasoft-processed CTD data that have not gone through quality control checks or bottle corrections. Anomalies are based on 50-year harmonics (1949-1999).
10 meter Preliminary CTD Data Contours
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10 meter Anomaly Contours (50 yr mean)
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100 meter Preliminary CTD Data Contours
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100 meter Anomaly Contours (50 yr mean)
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200 meter Preliminary CTD Data Contours
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200 meter Anomaly Contours (50 yr mean)
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300 meter Preliminary CTD Data Contours
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300 meter Anomaly Contours (50 yr mean)
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CTD Processing Notes
CTD Sensor Corrections:
Derived by comparing sensor data (4 sec avg prior-to-bottle closure) to bottle samples.
Dual Salinity (Seabird SBE4) and Oxygen (Seabird SBE43) Sensors
| PRIMARY SENSOR | SECONDARY SENSOR | |
|---|---|---|
| Salinity offset (bottle - sensor; > 350 m) | -0.0004 | 0.0034 |
| Oxygen ml/L | y = 1.0103x + 0.0092; R² = 0.9996 | y = 1.0562x - 0.0003; R² = 0.9996 |
| Oxygen umol/Kg | y =0.0108x + 0.8621; R² = 0.9996 | y = 1.0562x - 0.0003; R² = 0.9996 |
Single Nitrate (Satlantic ISUS v3 SN111) and Fluorescence (Wetlabs ECO AFL/FL) Sensors
| LINEAR | POLYNOMIAL | |
|---|---|---|
Nitrate Cast 001 - 020 | y = 36.489x - 1.3351; R² = 0.9466 | y = -18.449x2 + 57.489x - 2.2373; R² = 0.9626 |
Nitrate Cast 021 - 083 | y = 27.903x - 4.3872; R² = 0.987 | |
| Fluorescence | y = 7.0294x - 0.2322; R² = 0.8105 | y = 6.7661x2 + 5.5486x - 0.1745; R² = 0.8128 |
Regressions:
Please note: these regressions are generated from preliminary CTD vs bottle data and will be reprocessed once final bottle data are available. CTD temperatures and salinities do not usually change but oxygen, chlorophyll-a, and nitrate may change significantly after QAQC. Questionable or mistrip bottle data are removed from these comparisons but may be visible on the CTD.csv plots. For this cruise and future cruises, both primary & secondary sensor profiles vs bottle data will be generated and archived in the downloadable CTD+Bottle data files. These plots are under the “csv-plots\Primary” & “csv-plots\Secondary” subdirectories.
