Contributors | Affiliation | Role |
---|---|---|
Limeburner, Richard | Woods Hole Oceanographic Institution (WHOI) | Principal Investigator |
Allison, Dicky | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Rauch, Shannon | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
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.
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.
File |
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drifters_argos.csv (Comma Separated Values (.csv), 3.75 MB) MD5:ce510d3eda10b8c86355a55c0ff9bca9 Primary data file for dataset ID 2365 |
Parameter | Description | Units |
year | Four-digit year. | dimensionless |
drifterid | PI assigned drifter identification number. | dimensionless |
argosid | ARGOS assigned drifter identification. | dimensionless |
date_start_gmt | Date the drifter was initially deployed; reported as month/day/year, i.e. 3/26/01, GMT. | dimensionless |
time_gmt | Time of day as hours and minutes (HHMM format), GMT. | dimensionless |
lat_start | Latitude where drifter was deployed, negative = South. | decimal degrees |
lon_start | Longitude where drifter was deployed, negative = West. | decimal degrees |
comments | If drifter was deployed at a mooring site, mooring name is reported. | N/A |
yrday_gmt | Decimal year day (January 1, at 1200 hr. = year day 1.5). | Decimal year day |
lon | Longitude, negative = West. | decimal degrees |
lat | Latitude, negative = South. | decimal degrees |
temp_ss | Sea surface temperature; depth of sensor unknown or variable; temp data uncorrected, has errors. | degrees C |
depth_drifter | Drifter submergence in meters - uncorrected, has errors. | meters |
year_start | Year when the drifter was initially deployed. | dimensionless |
cruise_id | Identifier for the cruise on which the drifter was initially deployed. | dimensionless |
time_start_gmt | Time at which the drifter was initially deployed as hours and minutes (HHMM), GMT. | dimensionless |
month_gmt | Month of year (01 to 12); calculated from yrday_gmt. | dimensionless |
day_gmt | Day of month (01 to 31); calculated from yrday_gmt. | dimensionless |
Dataset-specific Instrument Name | Drifter Buoy |
Generic Instrument Name | Beardsley Drifter |
Dataset-specific 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. |
Generic Instrument 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. |
Website | |
Platform | RVIB Nathaniel B. Palmer |
Report | |
Start Date | 2001-04-24 |
End Date | 2001-06-05 |
Description | Methods & Sampling 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. |
Website | |
Platform | ARSV Laurence M. Gould |
Report | |
Start Date | 2001-03-18 |
End Date | 2001-04-13 |
Description | Methods & Sampling 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. |
Website | |
Platform | ARSV Laurence M. Gould |
Report | |
Start Date | 2002-02-06 |
End Date | 2002-03-03 |
Description | Methods & Sampling 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. |
Website | |
Platform | RVIB Nathaniel B. Palmer |
Report | |
Start Date | 2002-04-09 |
End Date | 2002-05-21 |
Description | Methods & Sampling 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. |
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.
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).
Funding Source | Award |
---|---|
National Science Foundation (NSF) | |
NSF Antarctic Sciences (NSF ANT) |