2010SR

Cruise Summary

Summary:

CalCOFI 2101RL sailed on RV Sally Ride on 11 Oct 2020 at 0800PDT from Nimitz Marine Facility, San Diego. 71 of 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. Two expendable wave measuring drifters 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 24 Oct 2020 at 0800PDT.

Cruise Dates:

11-24 Oct 2020 (Sun-Sat; 14 DAS)

Loading:

Gear to Nimitz Marine Facility 1 Oct; Self-Isolation Quarantine 3-8 Oct; Loading 9-10 Oct

Offloading:

24 Oct 2020

Contacts:

Ralf Goericke, Chief Scientist, SIO
Angela Klemmedson, Technical Coordinator, SIO

Cruise Map:

Station Data Collected:

CTD Sensors:

Bottle Samples:

Nets:

Underway Data Collected:

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)

-0.0036

-0.0037

Oxygen ml/L

y = 1.0140x + 0.0542; R² = 0.9975

y = 1.0515x + 0.0110; R² = 0.9976

Oxygen umol/Kg

y =1.05134x + 2.6974; R² = 0.9997

y = 1.0524x + 0.7234; R² = 0.9969

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

LINEARPOLYNOMIAL
Nitrate

y = 30.2408x - 11.2874; R² = 0.9683

Fluorescence

y = 7.9886x - 0.1998; R² = 0.9549

y = 7.5335x2+ 6.2571x - 0.1428; R² = 0.9514

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.