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OAS accession Detail for 0278863
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Title: Alongtrack data from ship's Data Acquisition System (DAS) from R/V Thomas G. Thompson cruise TN277 in the Eastern North Pacific Ocean in 2012 (POWOW project) (NCEI Accession 0278863)
Abstract: This dataset contains meteorological, optical, and physical data collected on R/V Thomas G. Thompson during cruise TN277 in the North Pacific Ocean from 2012-03-01 to 2012-03-11. These data include PAR, Speed over ground, air temperature, barometric pressure, conductivity, course over ground, light transmission (volts), radiation_s, relative wind speed, salinity calculated from CTD primary sensors, sound velocity, water temperature, wind_dir, wind_dir_r, and wind_speed. The instruments used to collect these data include Fluorometer, Thermosalinograph, and Wet Labs CSTAR Transmissometer. These data were collected by Dr Zackary I. Johnson of Duke University and Dr Erik Zinser of University of Tennessee Knoxville as part of the "Seasonal and decadal changes in temperature drive Prochlorococcus ecotype distribution patterns (POWOW)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2019-03-15.

The following is the text of the dataset description provided by BCO-DMO:

Alongtrack data from ship's Data Acquisition System (DAS).

Dataset Description:
Data collected along the cruise track from the ship's IMET sensors, thermosalinograph, Knudsen, and GPS. Unprocessed ADCP, gravity, and multibeam underway data are also available from BCO-DMO upon request. These are raw data that cannot be served online in their current format.
Date received: 20190315
Start date: 20120301
End date: 20120311
Seanames: North Pacific Ocean, San Diego Bay
West boundary: -158.342
East boundary: -117.225
North boundary: 32.707
South boundary: 21.247
Observation types: meteorological, optical, physical
Instrument types: fluorometer, thermosalinograph, transmissometer
Datatypes: AIR TEMPERATURE, BAROMETRIC PRESSURE, CONDUCTIVITY, course over ground, LIGHT TRANSMISSION, PHOTOSYNTHETIC ACTIVE RADIATION (PAR), SALINITY, SHORTWAVE RADIATION - REFLECTED, SOUND VELOCITY, speed over ground, WATER TEMPERATURE, WIND DIRECTION, WIND SPEED
Submitter:
Submitting institution: Biological and Chemical Oceanography Data Management Office
Collecting institutions: Duke University, University of Tennessee
Contributing projects:
Platforms: THOMAS G. THOMPSON (3250)
Number of observations:
Supplementary information: Acquisition Description:
The DAS system collects data at an operator selected interval; this interval is usually set at 1 sample every 5 seconds. The data are collected from IMET sensors, SBE-21 Thermosalinagraph, EM302 or Knudsen, C-Nav GPS and Winch systems. The data are time, date and position tagged. A new file is started each day at GMT 0:00 and ends at 23:59:55 (depending on the data storage interval). Filename extensions are Julian Day. (From University of Washington vessel information )

Thermosalinograph calibration data for DAS data follows:
Conductivity calibration coefficients:
m = 4.6
a = 0.00000523250085
b = 0.49686504
c = -4.21206317
d = -0.0000877310216

Temperature calibration coefficients:
f = 2610.082
a = 0.00364763429
b = 0.000596620785
c = 0.0000159326489
d = 0.00000120111676

External Temperature calibration coefficients:
f = 2676.423
a = 0.00368121106
b = 0.00058938925
c = 0.0000151014632
d = 0.00000122956892

PAR sensor calibration coefficient:
dry = 1.63E-17
Availability date:
Metadata version: 2
Keydate: 2023-05-28 04:49:33+00
Editdate: 2024-04-17 12:30:28+00