Dataset: Biofloat_48 track

Name: Position and time data along the track of Biofloat 48 in the subpolar North Atlantic and Iceland Basin in 2008 (NAB 2008 project)
Published: 2011-03-09
Keywords: oceans

Cite This Dataset

Spatial Extent: N:61.875 E:-19.278 S:58.691 W:-27.001

Project:

North Atlantic Bloom Experiment 2008 (NAB 2008)

Program:

Ocean Carbon and Biogeochemistry (OCB)

Principal Investigator:

Eric D'Asaro (University of Washington, UW APL)

Contact:

Eric Rehm (University of Washington, UW APL)

BCO-DMO Data Manager:

Theresa McKee (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

09 March 2011

Version Date:

2011-03-09

Validated:

Yes

Current State:

Final no updates expected

Position and time data along the track of Biofloat 48 in the subpolar North Atlantic and Iceland Basin in 2008 (NAB 2008 project)

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Description

Position and time data along Biofloat 48 track

Data Processing Description

Biofloat track is created from the raw GPS data acquired during float surfacings. The first GPS position acquired at surfacing is reporting except during long surfacings (at deployment), when a mean surface position is reported.

Data Files

File
Biofloat_48_track.csv (Comma Separated Values (.csv), 10.09 KB) MD5:6bf2bdd89f31045f3060b8ca6295f0cc Primary data file for dataset ID 3435

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0628107
NSF Division of Ocean Sciences	OCE-0628379

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Biofloat_48	B4-2008_Lagrangian_Float 48	2008-04-04	Biofloat 48	Eric D'Asaro (Chief Scientist) Eric Rehm (Contact)	data info

Instruments

Global Positioning System Receiver

Supplied Description:

Instrument Type

Generic Name: Global Positioning System Receiver

Acronym: GPS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/POS03/

Generic Description:

The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude.

Lagrangian Float

Supplied Description:

The 2008 North Atlantic Bloom Experiment (NAB08) employed a “Lagrangian float”, custom built at the University of Washington Applied Physics Laboratory. (D’Asaro, 2003, Performance of Lagrangian Floats, Journal of Atmospheric and Oceanic Technology, Vol. 20, 896-911).

Instrument Type

Generic Name: Lagrangian Float

Generic Description:

Built at the University of Washington Applied Physics Laboratory, the Lagrangian Float is not an ARGO float. It is primarily designed to accurately follow the three-dimensional motion of water parcels within the mixed layer, through a combination of neutral buoyancy and high drag provided by a one meter diameter black drogue. Typical buoyancies of a few grams result in vertical velocities relative to the water of a few mm/s, small compared to the cm/s turbulent velocities in the mixed layer. The float’s motion within the mixed layer thus closely imitates that of a planktonic organism. The float can also profile vertically. It sends data and receives commands using the Iridium satellite system. The float is designed to accommodate a wide variety of sensors.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
latitude	latitude	degrees	lat
longitude	longitude	degrees	lon
julian_day_yr0	julian day	decimal days since Jan 0 0000	julian_day_yr0
date	date	YYYYMMDD	date
time	time	HHMM	time
cruise	cruise identifier	dimensionless	cruise_id

Database

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Dataset: Biofloat_48 track