CalCOFI 1802SH

CTD Processing Summary CalCOFI 1802SH CTD FINAL Data
Download 1802SH CTD raw cast files zipped		Download 1802SH FinalQC CTD + bottle data
General CTD Notes - data acquisition notes, logistics, processing - see below. Please note that these regressions are generated from processed CTD vs FINAL bottle data and are considered done. CTD temperatures and salinities may not have changed significantly but oxygen, estimated chlorophyll-a, estimated nitrate may be significantly different than preliminary data. Questionable or mistrip bottle data have been removed from the correction regressions 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)	0.0020	-0.0001
Oxygen ml/L (dual Seabird SBE43)	y = 1.0731x + 0.0003 R² = 0.9999	y = 1.0452x + 0.0061 R² = 0.9996
Oxygen umol/Kg (dual Seabird SBE43; 2° O2 Calib Off)	y =1.0749x + 0.1044 R² = 0.9999	y = 1.0469x + 0.3613 R² = 0.9996
Single sensors	Linear	Polynomial
Nitrate - ISUS 4sec ave voltage vs Bottle NO3 (Satlantic ISUS v3 SN111)	y = 27.665x ‐ 6.1033 R² = 0.9905
Fluorometer - linear & polynomial regressions	y= 10.582x ‐ 0.418 R² = 0.7945	y = 16.582x2 + 4.9389x ‐ 0.1495 R² = 0.8357

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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:
Contacts:	Bryan Overcash, Chief Scientist, NMFS
	Dave Wolgast, IOD (SIO Technical Coordinator)

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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

• Cruise Instructions PDF (pending);
• Station Order & Coordinates;
• Chemical Inventory
• Station Activities
• Predicted Station Schedule (pending)

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)