Dataset: Biofloat_48 track
Deployment: Biofloat_48

Position and time data along Biofloat 48 track

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)

Project:

North Atlantic Bloom Experiment 2008 (NAB 2008)

Version:

09 March 2011

Deployment Synonyms:

B4-2008_Lagrangian_Float 48

Coordinated Deployments:

KN193-03, B4-2008, B10-2008, B9-2008, SG140, SG141, SG142, SG143

Version Date:

2011-03-09

Data URL:

https://www.bco-dmo.org/dataset-deployment/454433/data

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Description

Position and time data along Biofloat 48 track

Methods & Sampling

Dataset acquisition description

Data Processing Description

Dataset 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.

More information about this dataset deployment

Funding

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

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

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

Contribute Data

Dataset: Biofloat_48 track
Deployment: Biofloat_48

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Biofloat_48 trackDeployment: Biofloat_48

Dataset acquisition description

Dataset Processing Description

Dataset: Biofloat_48 track
Deployment: Biofloat_48