CalCOFI 1711SR

CTD Processing Summary CalCOFI 1711SR CTD Final Data
Download 1711SR CTD raw cast files zipped		Download 1711SR FinalQC CTD + bottle data
General CTD Notes - data acquisition notes, logistics, processing - see below. These regressions were generated from FINAL CTD and bottle data, having be point-check and remerged. Final bottle data have gone through CalCOFI's data-quality control which removes or flags questionable or mistrip bottle data and is publication-ready. CTD temperatures and salinities usually do not change significantly from preliminary bottle comparisons but oxygen, estimated chlorophyll-a, estimated nitrate may have changed significantly after point-checking. Questionable or mistrip bottle data are removed from these comparisons but may be visible on the CTD.csv plots. Both primary & secondary sensor profiles vs bottle data have been generated and archived in the downloadable CTD+Bottle data files. CTD sensor profiles with bottle data plots are under the "csv-plots\Primary" & "csv-plots\Secondary" subdirectories. Cast-specific notes are listed below, referencing any issues with CTD data.
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)	-0.0004	-0.0024
Oxygen ml/L (dual Seabird SBE43)	y = 1.0403x+0.0123 R² = 0.9997	y = 1.0257x + 0.0166 R² = 0.9996
Oxygen umol/Kg (dual Seabird SBE43; 2° O2 Calib Off)	y =1.0417x+0.6102 R² = 0.9997	y = 1.0271x + 0.8393 R² = 0.9995
Single sensors	Linear	Polynomial
Nitrate - ISUS 4sec ave voltage vs Bottle NO3 (Satlantic ISUS v3 SN111)	y = 27.431x-4.502 R² = 0.9897
Fluorometer - linear & polynomial regressions	y= 9.7172x-0.3856 R² = 0.7541	y = 31.828x2 + 1.0443x - 0.0142 R² = 0.8267

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Project:	CalCOFI 1711SR (UNOLS SR1717)
Summary:	CalCOFI 1711SR sailed from Nimitz Marine Facilities (MarFac), San Diego at 0800 09 Nov 2017 with 17 scientists, technicians, & volunteers. 74 of 75 scheduled stations were successfully occupied; one station was missed due to naval operations precluding our timely occupation of sta 90.45. A personnel exchange mid-cruise caused a major change in the station order. On Line 80, sta 80.55, we were restricted from station due to a NOAA weather satellite missle launch so we continued west to 80.60. Sta 80.55 was occupied on our southward transit to Line 87. Refer to cruise track map for actual cruise track and station order. RV Sally Ride returned to San Diego at ~1430 24 Nov 2017 & due to the Thanksgiving holiday, offloading was postponed till 0800 Monday 27 Nov.
Data Links:	1711SR Raw CTD Cast Files; Prelim. Horizontal Contour Plots; 1711SR Preliminary CTD+Bottle Data & Plots
Cruise Dates:	Departed Thur 0800 09 Nov; returned 1430 Fri 24 Nov 2017
Load Dates:	SIO-MESOM truck preload 0900 Mon 06 Nov; shipload 07 - 08 Nov 2017 (Tue-Wed) at Nimitz Marine Facility (MarFac) San Diego. Please note that the RV Sally Ride will be fueling away from MarFac Nov 8. If you want to setup during fueling, you must be onboard by 1000 8 Nov. Return to MarFace will be ~1700.
Offload Date:	0800 27 Nov 2017 (Mon) at MarFac
Ship:	SIO R/V Sally Ride
Station plan:	75 Standard (66 CalCOFI + 9 SCCOOS); please refer to the map below for the actual cruise track and station order.
Cruise Forms:	Ship Scheduling User Portal; Please login and fill out the mandatory participants forms
Cruise Map:
Contacts:	Dan Schuller, Chief Scientist, SIO-IOD
	Amy Hays, NMFS (Fisheries Technical Coordinator); Dave Griffith, NMFS

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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.

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: 14September2017        
Platform: R/V Sally Ride
Project Number: CalCOFI 1711SR (UNOLS SR1717)
Project Title: CalCOFI Fall Survey.
Project Dates: 9 - 24 November 2017
Prepared by: Daniel Schuller, Chief Scientist, and James R Wilkinson, Integrative Oceanography Division, Scripps Institution of Oceanography
Dated: 14 September 2017
PDFs:

• Cruise Instructions;
• Station Order & Coordinates;
• Chemical Inventory
• Station Activities
• Predicted Station Schedule

I. Overview

1. 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 Diego, California and Avila Beach, California during the period of 9-24 November 2017.
2. Operating Area:  From San Diego, CA to Avila Beach, CA and out 400 nautical miles. Please refer to Station Order & Coordinates PDF
3. 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 Diego, California and Avila Beach, California.
   1. I.C.1. Continuously sample multi-frequency acoustic backscatter using the Simrad EK80. The data will be used to estimate the distributions and abundances of coastal pelagic fishes (e.g., sardine, anchovy, and mackerel), and krill species.
   2. I.C.2. Continuously sample sea-surface temperature, salinity, and chlorophyll-a using a thermosalinograph. These data will be used to estimate the physical oceanographic habitats for target species.
   3. I.C.3. Continuously sample air temperature, barometric pressure, and wind speed and direction using an integrated weather station.
   4. I.C.4. 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. Primary production will be measured as C14 uptake in a six hour in situ incubation. Nutrients will be measured with an auto-analyzer. These data will be used to estimate primary productivity and the biotic and abiotic habitats for target species.
   5. I.C.5. Sample the light intensity in the photic zone using a standard secchi disk once per day in conjunction with a daytime CTD station. These data will be used to interpret the measurements of primary production.
   6. I.C.6. 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.
   7. I.C.7. Sample plankton using a Manta (neuston) net at prescribed stations. These data will be used to estimate the distributions and abundances of ichthyoplankton species.
   8. I.C.8. 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.
   9. I.C.9. Sample plankton using a PRPOOS (Planktonic Rate Processes in Oligotrophic Ocean Systems net) at all prescribed CalCOFI stations on lines 90.0, 86.7, 83.3 and 80.0 only. These data will be used in analyses by the LTER (Long Term Ecological Research) project.
   10. I.C.10. Continuously observe, during daylight hours, mammals. These data will be used to estimate the distributions and abundances of marine mammals.
   11. I.C.11. Deployment of four expendable wave measuring drifters at the offshore end of CalCOFI lines.
4. Participating Institutions
   1. I.D.1 Southwest Fisheries Science Center (SWFSC)
   2. I.D.2 Scripps Institution of Oceanography (SIO)

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