Dataset: buoy_position

Name: Autonomous buoy position data from Southern Ocean GLOBEC from ARSV Laurence M. Gould LMG0106 in the Southern Ocean from July 2001
Published: 2009-05-07
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.3114.2

Spatial Extent: N:-67.1153 E:-68.59497 S:-69.296 W:-74.908

Temporal Extent: 2001-08-06 - 2001-08-24

Project:

GLOBEC: Sea Ice Microbial Communities (Sea Ice Microbes)

U.S. GLOBEC Southern Ocean (SOGLOBEC)

Program:

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

Principal Investigator:

Daniel P. Costa (University of California-Santa Cruz, UCSC)

Co-Principal Investigator:

Chris H. Fritsen (Desert Research Institute, DRI)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2009-05-07

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Autonomous buoy position data from Southern Ocean GLOBEC from ARSV Laurence M. Gould LMG0106 in the Southern Ocean from July 2001

Abstract:

Autonomous buoy position data from Southern Ocean GLOBEC from ARSV Laurence M. Gould LMG0106 in the Southern Ocean from July 2001.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2009-05-07	National Oceanographic Data Center (NODC)	0115276	2013-12-25
2009-05-07	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.3114.2	2019-01-28

Description

Related datasets:
buoy_temp_barom Air temperature and barometric pressure results from autonomous buoys, Aug. - Nov. 2001
buoy_therm Thermistor data at 10 cm intervals in air, ice, water from autonomous buoys, Aug. - Nov. 2001
buoy_radm Radiometer data from autonomous buoy 07949, Aug. - Nov. 2001

Methods & Sampling

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.

Tracks from all 2001 buoys:

buoy tracks

Data Processing Description

NOTE: BCO-DMO corrected lon values from positive to negative (08/15/12).

Data Files

File
buoy_position.csv (Comma Separated Values (.csv), 170.72 KB) MD5:73ae3ab7ca828ed891f8d37a5b552e12 Primary data file for dataset ID 3114

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Antarctic Sciences	ANT-9910098

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
LMG0106		2001-07-21	ARSV Laurence M. Gould	Daniel P. Costa (Chief Scientist)	data info

Instruments

Drifter Buoy

Supplied Description:

Two of the buoys (07413, 07440) were standard off-the-shelf Met-Ocean Ice buoys.These buoys measured barometric pressure, air temperature, and GPS position. The data were transmitted via ARGOS. 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. 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.

Instrument Type

Generic Name: Drifter Buoy

Generic 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: https://mmisw.org/ont/ioos/platform/drifting_buoy and https://www.aoml.noaa.gov/phod/gdp/faq.php#drifter1

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
buoy_id	identification number of the buoy		no_bcodmo_term
inst	GPS or ARGOS type transmission		no_bcodmo_term
yrday_gmt	GMT day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours (noon).		yrday_gmt
date_gmt	gmt month, day and year, usually as a text string, e.g. feb10_1995.		date_gmt
year	year, reported as YYYY, e.g. 1995		year
month_gmt	month of year, GMT time , i.e. 01-12		month_gmt
day_gmt	day, GMT time e.g. 22.		day_gmt
time_gmt	time of day, reported in GMT time, 24 hour clock		time_gmt
lat	latitude, in decimal degrees, North is positive, negative denotes South	decimal degrees	lat
lon	longitude, in decimal degrees, East is positive, negative denotes West	decimal degrees	lon

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