California Cooperative Oceanic Fisheries Investigations

	SBE-21	SBE-45
NOAA ShipS:
Miller Freeman - home page	X
David Starr Jordan - home page	X
McArthur II - home page		X
Scripps ShipS:
New Horizon - home page		X
Roger Revelle - home page
Melville - home page

 

 

 

 

 




 

---

SEACAT Thermosalinograph SBE 21 - Product Homepage

The SBE 21 accurately determines sea surface temperature and conductivity from underway vessels. Data is simultaneously stored in memory and transmitted to a computer serial port, allowing independent data logging and real-time data acquisition. Typically mounted near the ship's seawater intake, the SBE 21 is connected to an AC-powered interface box positioned near the computer. The interface box provides power and an isolated data interface, and contains a NMEA 0183 port for appending navigation information to the data stream. 

---

MicroTSG (Thermosalinograph) SBE 45 - Product Homepage

The SBE 45 MicroTSG Thermosalinograph is an externally powered, high-accuracy instrument, designed for shipboard determination of sea surface (pumped-water) conductivity and temperature. Salinity and sound velocity can also be computed. The MicroTSG is constructed of plastic and titanium to ensure long life with minimum maintenance.
 

---

Ship Specifics:

David Starr Jordan - The Seabird Electronics SBE-21 thermosalinograph plumbed in at the bow capable of measuring the conductivity and temperature of the water from either 2 meters below the ship's waterline or from 5.6 meters below the water line. SCS Sensor Information 

McArthur II - The Seabird Electronics SBE-45 thermosalinograph is plumbed into the Wet Lab and measures the conductivity and temperature of the water. The hull intake is 3 meters below the water line. The data is recorded on SCS and is available for scientific use.

New Horizon - The SAIL (Serial ASCII Instrumentation Loop) Data Acquisition System is a datalogging system used to record ship's navigational parameters and meteorological variables. The system is PC-based and data are collected at a user-specified rate and can be written to 5-1/4 inch floppy disks. The system is in the upper lab. The standard configuration is to log: date, time, doppler speed log, gyro compass, Trimble 10X gps/loran receiver message, wind speed and wind direction. Special arrangements can be made with the Shipboard Computer Group so the system can also log data from a pyrgeometer (Infrared Radiometer) and from a Black and White pyranometer (Short wave radiation). Other type of data can be easily interfaced, and several different types of SAIL modules are installed in the system for use by the current scientific party. Contact the Shipboard Computer Group (619) 534-6054 for more information.

 Welcome to the SCIMS Underway Data home page.  Here, you will find data plots, raw data, processed data and meta data from the SCIMS project on CalCOFI cruises.  The SCIMS project aims to continuously collect surface oceanographic and meteorological data on all CalCOFI cruises.

There are a number of data products available for each cruise:

10 Minute Data: This is the primary data product.  There are 4 surface oceanographic variables (SST, Salinity, Fluorescence and Chlorophyll A concentration) along with date, time and position stamps. Currently, the data is available in 10 minute temporal resolution. Along with this CSV data file, we have a quality flags file that contains the quality control flags for each data point.  There are 3 flags: 9, 3 and 1. 9 is for invalid data, 3 is for questionable data and 1 is for good data.  These are evaluated using a preprocessor that performs simple checks on the data.  Finally, there is a header file that contains the column headings for the data and flags.  Having the header in a separate file makes importing the data into matlab an easier task.  Note that the flags file has 1 extra column than the data file (an extra row quality flag, indicating the trustworthiness of the entire row of data).

Meta Data: This csv file provides the user with information about the sensors involved in the data collection process.

Station Data for Cross Correlation: This is CTD station data and underway surface data, in the same file, sampled from the same location.  This was used in processing to cross correlate the underway data, essentially calibrating it to the CTD standard.  Here we have data, flags and header just like the 10 minute data.

Cross Correlation Data and Plots: In this zip file are a number of plots that illustrate the cross correlation process and the goodness of fit for the particular correlations. These include least squares fits and residuals plotted versus the independent variable.  Also in the zip file is 1 file for each variable that includes the data used to perform the least squares fits.

Charts: Finally, we have the underway track plotted on a map.  The track color varies with one of 4 variable values. Most cruises will have SST, Salinity, Fluorescence and Chlorophyll A plots.  A few cruises (notably most of 2004) did not record fluorescence data, so Fluorescence and Chlorophyll A are not available.

There is data available for the following years:

• 2004
• 2005
• 2006