Thermistor data at 10 cm intervals in air, ice, water from autonomous buoys from ARSV Laurence M. Gould LMG0106 in the Southern Ocean, August to November, 2001 (SOGLOBEC project)

Data Type: Cruise Results
Version: 1
Version Date: 2009-05-07

» U.S. GLOBEC Southern Ocean (SOGLOBEC)

» U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)
Costa, Daniel P.University of California-Santa Cruz (UC Santa Cruz)Principal Investigator
Fritsen, Chris H.Desert Research Institute (DRI)Co-Principal Investigator
Copley, NancyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Thermistor data at 10 cm intervals in air, ice, water from autonomous buoys from ARSV Laurence M. Gould LMG0106 in the Southern Ocean, August to November, 2001 for the Southern Ocean GLOBEC project.


Spatial Extent: N:-67 E:-68 S:-69.5 W:-75
Temporal Extent: 2001-08-06 - 2001-11-10

Dataset Description

Related datasets:
buoy_position Autonomous buoy position data, Aug. - Nov. 2001
buoy_temp_barom Air temperature and barometric pressure results from autonomous buoys, Aug. - Nov. 2001
buoy_radm Radiometer data from autonomous buoy 07949, Aug. - Nov. 2001

Acquisition Description

During the July-September 2001 Southern Globec cruises of the Palmer and Gould we installed four buoys. Two of the buoys (07413, 07440) were standard off-the-shelf Met-Ocean Ice buoys (see above photograph). These buoys measured barometric pressure, air temperature, and GPS position. The data were transmitted via ARGOS. A radar reflector was mounted on a wooden 4 x 4 to help find the site if there was an opportunity to return, however the reflector return was difficult to discern among all the backscatter clutter caused by deformed ice and icebergs.

The other two buoys (07949, 07950) were custom made CRREL ice mass balance buoys (photo on right). These buoys reported barometric pressure, Argos position, and air temperature. In addition they had a thermistor string that measured a vertical profile of temperature, at 10 cm spacing, from the air, through the snow and ice, and into the upper ocean. There were acoustic sensors measuring the positions of the snow surface and ice bottom. A fluorometer was mounted under the ice. One of the buoys (07949) had three spectroradiometers; one mounted about the ice, one mounted directly below the ice, and one a few meters deep in the upper ocean. Results from all buoys are compared.

Positive values are above the ice; negative values are in the ice and underlying ocean. Due to surface flooding and freezing, the position of the snow-ice interface changed during the measurement period.

Tracks from all 2001 buoys:

buoy tracks

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therm_posheight of thermistor relative to ice. Positive values are above the ice; negative values are in the ice and underlying ocean. centimeters
yrday_gmtGMT day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours (noon)
date_gmtgmt month, day and year, usually as a text string, e.g. feb10_1995.
yearyear, reported as YYYY, e.g. 1995
month_gmtmonth of year, GMT time , i.e. 01-12
day_gmtday, GMT time e.g. 22.
time_gmttime of day, reported in GMT time, 24 hour clock
temptemperature at measurement depth degrees Celsius

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Dataset-specific Instrument Name
Drifter Buoy
Generic Instrument Name
Drifter Buoy
Dataset-specific Description
4 buoys in ice
Generic Instrument Description
Drifting buoys are free drifting platforms with a float or buoy that keep the drifter at the surface and underwater sails or socks that catch the current. These instruments sit at the surface of the ocean and are transported via near-surface ocean currents. They are not fixed to the ocean bottom, therefore they "drift" with the currents. For this reason, these instruments are referred to as drifters, or drifting buoys. The surface float contains sensors that measure different parameters, such as sea surface temperature, barometric pressure, salinity, wave height, etc. Data collected from these sensors are transmitted to satellites passing overhead, which are then relayed to land-based data centers. definition sources: and

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ARSV Laurence M. Gould
Start Date
End Date

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Project Information

U.S. GLOBEC Southern Ocean (SOGLOBEC)

Coverage: Southern Ocean

The fundamental objectives of United States Global Ocean Ecosystems Dynamics (U.S. GLOBEC) Program are dependent upon the cooperation of scientists from several disciplines. Physicists, biologists, and chemists must make use of data collected during U.S. GLOBEC field programs to further our understanding of the interplay of physics, biology, and chemistry. Our objectives require quantitative analysis of interdisciplinary data sets and, therefore, data must be exchanged between researchers. To extract the full scientific value, data must be made available to the scientific community on a timely basis.

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Program Information

U.S. GLOBal ocean ECosystems dynamics (U.S. GLOBEC)

Coverage: Global

U.S. GLOBEC (GLOBal ocean ECosystems dynamics) is a research program organized by oceanographers and fisheries scientists to address the question of how global climate change may affect the abundance and production of animals in the sea.

The U.S. GLOBEC Program currently had major research efforts underway in the Georges Bank / Northwest Atlantic Region, and the Northeast Pacific (with components in the California Current and in the Coastal Gulf of Alaska). U.S. GLOBEC was a major contributor to International GLOBEC efforts in the Southern Ocean and Western Antarctic Peninsula (WAP).

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Funding SourceAward
NSF Antarctic Sciences (NSF ANT)

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