1806SR
Cruise Summary
Summary:
CalCOFI 1806SR sailed on RV Sally Ride on 09 Jun 2018 from Nimitz Marine Facility, San Diego. 72 of 75 science stations were successfully occupied. Two SCCOOS stations, 93.4 26.4 & 91.7 26.4, were not scheduled due to conflicting Naval operations. CTD casts and various net tows were completed at each science station. Scheduled unusually early this summer, the weather was moderately-rough for most of the cruise, slowing transits. This resulted in dropping the Pt Dume SCCOOS station on the way home to San Diego. At sta 87.100 (31 39.4N 123 4.2W), RV Sally Ride rendezvoused with trans-Pacific race-support sailboat Present Moment towing abandoned race row boat Anne. RV Sally Ride brought the damaged boat onboard & transported it to San Diego. Details of the recovery of Anne from Present Moment onto R/V Sally Ride can be found on RV Sally Ride’s blog by Melissa Miller. The cruise ended Nimitz Marine Facility, San Diego on 24 Jun 2018.
Cruise Dates:
09 – 24 Jun 2018 (Sat-Sun; 16 DAS)
Loading:
06 – 08 Jun 2018
Offloading:
25 Jun 2018
Ship:
Contacts:
Jennifer Rodgers-Wolgast, Chief Scientist, SIO
Bryan Overcash, Technical Coordinator, NOAA
Cruise Map:
Station Data Collected:
CTD Sensors:
- Temperature
- Conductivity/Salinity
- Dissolved Oxygen
- Fluorescence
- Transmittance
- PAR (Photosynthetically Active Radiation)
- Nitrate (ISUS)
- Altimetry
Bottle Samples:
- Salinity
- Dissolved Oxygen
- Nutrients
- Chlorophyll-a & Phaeopigments
- Primary Productivity
- Phytoplankton
- HPLC (High Performance Liquid Chromatography)
- DIC (Dissolved Inorganic Carbon)
- DNA/RNA
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)
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) | -0.0045 | -0.0071 |
| Oxygen ml/L | y = 1.07x - 0.019; R² = 0.9997 | y = 1.0306x + 0.0326; R² = 0.9996 |
| Oxygen umol/Kg | y = 1.0714x - 0.7035; R² = 0.9997 | y = 1.032x + 1.543; R² = 0.9996 |
Single Nitrate (Satlantic ISUS v3 SN111) and Fluorescence (Wetlabs ECO AFL/FL) Sensors
| LINEAR | POLYNOMIAL | |
|---|---|---|
| Nitrate | y = 27.652x - 10.323; R² = 0.9958 | |
| Fluorescence | y = 9.6215x - 0.332; R² = 0.868 | y = 1.3267x2 + 8.7793x - 0.283; R² = 0.8688 |
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.
