2007SR

Cruise Summary

Summary:

CalCOFI 2007SR sailed on RV Sally Ride on 13 Jul 2020 at 0800PDT from Nimitz Marine Facility, San Diego. All 75 science stations were successfully occupied. CTD casts and Bongo/PRPOOS net tows were completed at each science station. Underway science included continuous pCO2/pH and meteorological measurements. Four expendable wave measuring drifters and one radio buoy (made by high school students from Mt. Carmel HS Radio Club) were also deployed. Due to science personnel restrictions related to social distancing requirements, no Manta/Pairovet net deployments or primary productivity experiments took place. Additionally, underway science including CUFES (Continuous Underway Fish Egg Sampler) and visual/acoustic observations of marine mammals and avifauna were not conducted during this cruise. The cruise ended at Nimitz Marine Facility, San Diego on 27 Jul 2020 at 1500PDT.

Cruise Dates:

13-27 Jul 2020 (Mon-Mon; 15 DAS)

Loading:

Gear to Nimitz Marine Facility 2 Jul; Self-Isolation Quarantine 5-10 Jul; Loading 11-12 Jul

Offloading:

28 Jul 2020

Ship:

RV Sally Ride

Contacts:

Angela Klemmedson, Chief Scientist, SIO

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)

0.00033

0.00170

Oxygen ml/L

y = 1.04200x + 0.0002; R² = 0.9990

y = 2.3898x - 3.9207; R² = 0.9824

Oxygen umol/Kg

y =1.0431x + 0.1487; R² = 0.9997

y = 2.3906x - 170.4218; R² = 0.9824

Single Nitrate (Satlantic ISUS v3 SN111) and Fluorescence (Wetlabs ECO AFL/FL) Sensors

LINEARPOLYNOMIAL
Nitrate

y = 29.3821x - 11.0190; R² = 0.9865
Fluorescence

y = 11.6649x - 0.4106; R² = 0.8343

y = 0.8675x2+ 12.3769x - 0.4559; R² = 0.8354

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.