Dataset: drifters_argos

Name: Raw drifter data from RVIB Nathaniel B. Palmer and ARSV Laurence M. Gould cruises NBP0103, LMG0103, LMG0201A, and NBP0202 in the Southern Ocean from 2001-2002 (SOGLOBEC project)
Published: 2012-06-18
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.2365.1

Spatial Extent: N:-60.282 E:-60.319 S:-70.457 W:-77.556

Temporal Extent: 2001-03-26 - 2002-04-16

Project:

U.S. GLOBEC Southern Ocean (SOGLOBEC)

Program:

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

Principal Investigator:

Richard Limeburner (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2012-06-18

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Raw drifter data from RVIB Nathaniel B. Palmer and ARSV Laurence M. Gould cruises NBP0103, LMG0103, LMG0201A, and NBP0202 in the Southern Ocean from 2001-2002 (SOGLOBEC project)

Abstract:

The following was extracted from the Cruise Report of the N.B. Palmer Cruise 01-03: 2.0 Drifter Measurements (Bob Beardsley and Dick Limeburner) Surface drifters are being deployed and tracked via satellite to study the near surface Lagrangian currents in the SO GLOBEC study area on the western Antarctic Peninsula Shelf. Each drifter has a small (~ 30 cm diameter) surface float with ARGOS transmitter and batteries tethered to a holey sock drogue centered at 15 m below the surface. The drogue, about 10 m tall and 1 m in diameter, is designed to "lock" itself to the water so that the surface float follows the mean water motion at 15 m depth with very little slippage even in high winds. Thus measuring the drifter's position as a function of time provides a Lagrangian measurement of the 15-m ocean current.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2012-06-18	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.2365.1	2018-12-17

Description

ARGOS Tracked Near Surface Drifter Data
The following was extracted from the Cruise Report of the N.B. Palmer Cruise 01-03. The complete cruise report can be seen here or on the SO GLOBEC web site under the object "Inventory"

2.0 Drifter Measurements (Bob Beardsley and Dick Limeburner)
Surface drifters are being deployed and tracked via satellite to study the near surface Lagrangian currents in the SO GLOBEC study area on the western Antarctic Peninsula Shelf. Each drifter has a small (~ 30 cm diameter) surface float with ARGOS transmitter and batteries tethered to a holey sock drogue centered at 15 m below the surface. The drogue, about 10 m tall and 1 m in diameter, is designed to "lock" itself to the water so that the surface float follows the mean water motion at 15 m depth with very little slippage even in high winds. Thus measuring the drifter's position as a function of time provides a Lagrangian measurement of the 15-m ocean current.

Data contributed by:
Richard Limeburner
Woods Hole Oceanographic Institution
Woods Hole, MA 02543
e-mail: rlimeburner@whoi.edu

file updated June 18 2012; smr.

Data Processing Description

BCO-DMO made the following changes to the formatting of the data: Calculated actual 'yrday_gmt' values from the original 'yrday_special' column; Added cruiseid; Re-formatted all values from scientific notation to integers; Added month_gmt, day_gmt, and time_gmt.

Data Files

File
drifters_argos.csv (Comma Separated Values (.csv), 3.75 MB) MD5:ce510d3eda10b8c86355a55c0ff9bca9 Primary data file for dataset ID 2365

More Information about this dataset

Funding Sources

Funding Source	Award Number
National Science Foundation	unknown GB NSF
NSF Antarctic Sciences	unknown SOGLOBEC NSF ANT

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
LMG0103		2001-03-18	ARSV Laurence M. Gould	Richard Limeburner (Chief Scientist)	data info
LMG0201A		2002-02-06	ARSV Laurence M. Gould	Robert C. Beardsley (Chief Scientist)	data info
NBP0103	GLOBECI	2001-04-24	RVIB Nathaniel B. Palmer	Peter H. Wiebe (Chief Scientist)	data info
NBP0202	GLOBECIII	2002-04-09	RVIB Nathaniel B. Palmer	Peter H. Wiebe (Chief Scientist)	data info

Instruments

Beardsley Drifter

Supplied Name: Drifter Buoy

Supplied Description:

Each drifter has a small (~ 30 cm diameter) surface float with ARGOS transmitter and batteries tethered to a holey sock drogue centered at 15 m below the surface.

Instrument Type

Generic Name: Beardsley Drifter

Generic Description:

Beardsley Drifters are near-surface satellite-tracked drifters used for observations of circulation patterns. They are WOCE-style drifters featuring holey sock drogues. Each drifter has a small (~ 30 cm diameter) surface float with ARGOS transmitter and batteries tethered to a holey sock drogue centered at 15 m below the surface. The drogue, about 10 m tall and 1 m in diameter, is designed to "lock" itself to the water so that the surface float follows the mean water motion at 15 m depth with very little slippage even in high winds. Thus measuring the drifter's position as a function of time provides a Lagrangian measurement of the 15-m ocean current.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
year	Four-digit year.	dimensionless	year
drifterid	PI assigned drifter identification number.	dimensionless	drifterid
argosid	ARGOS assigned drifter identification.	dimensionless	argosid
date_start_gmt	Date the drifter was initially deployed; reported as month/day/year, i.e. 3/26/01, GMT.	dimensionless	date_begin
time_gmt	Time of day as hours and minutes (HHMM format), GMT.	dimensionless	time_gmt
lat_start	Latitude where drifter was deployed, negative = South.	decimal degrees	lat_start
lon_start	Longitude where drifter was deployed, negative = West.	decimal degrees	lon_start
comments	If drifter was deployed at a mooring site, mooring name is reported.	N/A	comment
yrday_gmt	Decimal year day (January 1, at 1200 hr. = year day 1.5).	Decimal year day	yrday_gmt
lon	Longitude, negative = West.	decimal degrees	lon
lat	Latitude, negative = South.	decimal degrees	lat
temp_ss	Sea surface temperature; depth of sensor unknown or variable; temp data uncorrected, has errors.	degrees C	SST
depth_drifter	Drifter submergence in meters - uncorrected, has errors.	meters	depth_drifter
year_start	Year when the drifter was initially deployed.	dimensionless	year_start
cruise_id	Identifier for the cruise on which the drifter was initially deployed.	dimensionless	cruiseid
time_start_gmt	Time at which the drifter was initially deployed as hours and minutes (HHMM), GMT.	dimensionless	time_start
month_gmt	Month of year (01 to 12); calculated from yrday_gmt.	dimensionless	month_gmt
day_gmt	Day of month (01 to 31); calculated from yrday_gmt.	dimensionless	day

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