California Cooperative Oceanic Fisheries Investigations

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Home Data Underway Information
Underway Information

Ship Instrumentation

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SBE-21
SBE-45
SBE-38

NOAA ShipS:

 
 
 
Miller Freeman - home page
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David Starr Jordan - home page
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McArthur II - home page
 
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Scripps ShipS:

 
 
 
New Horizon - home page
 
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Roger Revelle - home page
 
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Melville - home page   X  
 

 

 

 

 

 




 


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.

Last Updated on Monday, 10 May 2010 08:36
 

Underway Data Variables - SIO

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Information provided by: Shipboard Meteorological System MetAcq Operator’s Manual Shipboard Technical Support Revision 1.26a 24 May 2003. 

Each data point has a 2 character ID to identify it.  There is also a third character to help clarify the type of data.  E.g. +25.3,AT0 (air temperature, calibrations not applied). 

Underway_Raw.txt Variables:

$WICOR Data Corrected

DDMMYY

HHMMSS

WS Wind Speed - Port

WD Wind Direction - Port

TW True Wind Speed M/S - Port

TI True Wind Direction Deg - Port

WS Wind Speed - Starboard

WD Wind Direction - Starboard

TW True Wind Speed M/S - Starboard

Last Updated on Monday, 28 February 2011 18:03 Read more...
 

Underway Data Variables - Final

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Final underway data files contain both the processed ship specific RAW data and calculated values.  Below are examples of column headers and their units.

Underway_Final.txt

DATE_UTC DDMMYY

TIME_UTC HHMMSS

LA/Lat Latitude Decimal format Deg

LO/Long Longitude Decimal format Deg

ST/t1/t2 Sea Surface Temperature Deg C

c Condutivity S/M

SA/s Salinity PSU

FL Fluorometer ug/l

FI USW Flow Meter LPM

CAL_T Calculated Temperature Deg C

CAL_S Calculated Salinity PSU

CAL_C Calculated Chlorophyll A mg/m³

Last Updated on Monday, 10 May 2010 08:26
 

Glossary

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TSG = Thermosalinometer

SCS = Scientific Computing System (SCS) serves as the main data collection system

IMET = Suite of meteorological sensors 

Last Updated on Monday, 03 May 2010 09:09