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CalCOFI 1802SH • 01 - 11 Feb 2018 (Thu-Sun; 11 DAS)  RV Bell M Shimada   Load & setup 29-31 Jan 2018 at 10th Ave Marine Terminal, with departure 01 Feb 2018.

Summary: NOAA RV Bell M Shimada sailed from 10th Ave Marine Terminal San Diego 01 Feb 2018. With only eleven days-at-sea, 40 stations were scheduled. With mostly calm weather and fast transit times, 5 additional stations on Line 77 were added. Forty-five stations were completed before transiting north & offloading in San Francisco.
Data Files: 1802SH Raw CTD Cast Files; Prelim. Horizontal Contour Plots; 1802SH Preliminary CTD+Bottle Data & Plots
Cruise Dates: 01 -  11 Feb 2018
Loading: Loading & setup 29-31 Jan 2018 10th Ave Marine Terminal, San Diego
Sailing: 1000 01 Feb 2018
Offloading: 12 Feb 2018 San Francisco
Participant Forms: NOAA Medical Forms - required for all cruise participants sailing 01 Feb 2018
Ship: FSV Bell M Shimada
Station plan: 45 Station station plan - with only 11 DAS, an abbreviated station pattern without Line 93 stations is required with offload in San Francisco
Cruise Map: CalCOFI 1802SH Actual Station Pattern
   
Contacts: Bryan Overcash, Chief Scientist, NMFS
  Dave Wolgast, IOD (SIO Technical Coordinator)

CTD Processing Summary CalCOFI 1802SH CTD Preliminary Data
Download 1802SH CTD raw cast files zipped Download 1802SH Preliminary CTD + bottle data

General CTD Notes - data acquisition notes, logistics, processing - see below.
Please note that 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, estimated chlorophyll-a, estimated nitrate may change significantly after point-checking. 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.

CTD sensor corrections derived by comparing CTD sensor data, 4sec averages prior-to-bottle closure, to bottle samples
Dual T, S, & O2 Primary Sensor Secondary Sensor
Salinity offset (bottle - CTD salinity; > 350m only; Seabird SBE4) 0.0021 0.0001
Oxygen ml/L (dual Seabird SBE43) y = 1.0727x + 0.0021
R² = 0.9997
y = 1.0449x + 0.0076
R² = 0.9995
Oxygen umol/Kg (dual Seabird SBE43; 2° O2 Calib Off) y =1.0745x + 0.1914
R² = 0.9997
y = 1.0467x + 0.4323
R² = 0.9995
Single sensors Linear Polynomial
Nitrate - ISUS 4sec ave voltage vs Bottle NO3 (Satlantic ISUS v3 SN111) y = 27.663x - 6.0445
R² = 0.9946
 
Fluorometer - linear & polynomial regressions

y= 10.164x - 0.4005

R² = 0.7951

y = 15.696x2 + 4.8337x - 0.1473

R² = 0.8351

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

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. CalCOFI 1802SH occupied 45 standard stations so there are no data for Line 93, or stations beyond 100 on all lines, and Line 77 beyond 77.70.

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)

 

Date Created: 13 December 2017
Updated: 26 January 2018
Platform: NOAA Ship FSV Bell M Shimada
Project Number: CalCOFI 1802SH (OMAO SH-18-01)
Project Title: Winter 2018 CalCOFI Survey, Fisheries Resources Division
Project Dates: 1 - 11 February 2018
MOB Dates: 29 - 31 Jan 2018
DOB Dates: 12 Feb 2018
Prepared by: Bryan Overcash, Chief Scientist

I.     Overview
    A.    Brief Summary and Project Period
Survey the distributions and abundances of pelagic fish stocks, their prey, and their biotic and abiotic environments in the area of the California Current between San Francisco, California and San Diego, California during the period of February 01 to February 11, 2018.
    B.    Days at Sea (DAS)  
Of the 11 DAS scheduled for this project, 11 are funded by a Line Office Allocation.  This project is estimated to exhibit a High Operational Tempo.
C.    Operating Area
The area covered during this survey will be from San Diego to San Francisco and extend     approximately 200 miles offshore (please see appendices 1b & 2a).
    D.    Summary of Objectives
Survey the distributions and abundances of pelagic fish stocks, their prey, and their biotic and abiotic environments in the area of the California Current between San Francisco, California and San Diego, California.
The following are specific objectives for the winter CalCOFI.
 
I.D.1. Continuously sample pelagic fish eggs using the Continuous Underway Fish Egg Sampler (CUFES). The data will be used to estimate the distributions and abundances of spawning hake, anchovy, mackerel, and early spawning Pacific sardine.

I.D.2. Continuously sample multi-frequency acoustic backscatter using the Simrad EK60/80 and the Simrad ME70. The data will be used to estimate the distributions and abundances of coastal pelagic fishes (e.g., sardine, anchovy, and mackerel), and krill species.

I.D.3. Continuously sample sea-surface temperature, salinity, and chlorophyll-a using a thermosalinometer and fluorometer. These data will be used to estimate the physical oceanographic habitats for target species.

I.D.4. Continuously sample air temperature, barometric pressure, and wind speed and direction using an integrated weather station.

I.D.5. Sample profiles of seawater temperature, salinity, chlorophyll-a, nutrients, and phytoplankton using a CTD with water-sampling rosette and other instruments at prescribed stations. Measurements of extracted chlorophyll and phaeophytin will be obtained with a fluorometer.  Nutrients will be measured with an auto-analyzer.

I.D.6. Sample the light intensity in the photic zone using a standard secchi disk in conjunction with a daytime CTD station.

I.D.7. Sample plankton using a CalBOBL (CalCOFI Bongo Oblique) at prescribed stations. These data will be used to estimate the distributions and abundances of ichthyoplankton and zooplankton species.

I.D.8. Sample plankton using a Manta (neuston) net at prescribed stations. These data will be used to estimate the distributions and abundances of ichthyoplankton species.

I.D.9. Sample the vertically integrated abundance of fish eggs using a Pairovet net at prescribed stations. These data will be used to quantify the abundances and distributions of fish eggs.

I.D.10. Sample plankton using a PRPOOS (Planktonic Rate Processes in Oligotrophic Ocean Systems) net at all prescribed CalCOFI stations on lines 90.0 and 80.0 as well as stations out to and including station 70.0 on lines 86.7 and 83.3 and station 81.8 46.9.  PRPOOS will not be towed on SCCOOS stations.  These data will be used in analyses by the LTER (Long Term Ecological Research) project.

I.D.11. Continuously sample profiles of currents using the RDI/Teledyne Acoustic Doppler Current Profiler. This will be dependent on the ability to sync the ADCP’s output with the EK60/80 and ME70. The EK60 and ME70 will hold priority over the ADCP.

I.D.12. Continuously observe, during daylight hours, seabirds and mammals. These data will be used to estimate the distributions and abundances of seabirds and marine mammals.

E.  Participating Institutions
     I.E.1 Southwest Fisheries Science Center (SWFSC)
     I.E.2 Scripps Institution of Oceanography (SIO)
     I.E.3 Farallon Institute Advanced Ecosystem Research (FIAER)
 

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