Dataset: buoy_radiometer
Deployment: LMG0106

Radiometer data from autonomous buoy 07949, Aug. - Nov. 2001

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)

Project:

GLOBEC: Sea Ice Microbial Communities (Sea Ice Microbes)

U.S. GLOBEC Southern Ocean (SOGLOBEC)

Coordinated Deployments:

NBP0104

Data URL:

https://www.bco-dmo.org/dataset-deployment/452638/data

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Description

Related datasets:
buoy_position Autonomous buoy position data, Aug. - Nov. 2001
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

Methods & Sampling

Dataset acquisition description

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

Dataset Processing Description

More information about this dataset deployment

Funding

Award Number	Funding Source
ANT-9910098	NSF Antarctic Sciences

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

Supplied Name	Supplied description	Supplied Units	Standard Name
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
location	location of thermister: air, ice or water		no_bcodmo_term
rad_412_3	spectroradiometer readings at wavelength 412.3	mW nm-1 cm-2	no_bcodmo_term
rad_442_8	spectroradiometer readings at wavelength 442.8	mW nm-1 cm-2	no_bcodmo_term
rad_490_6	spectroradiometer readings at wavelength 490.6	mW nm-1 cm-2	no_bcodmo_term
rad_555	spectroradiometer readings at wavelength 555	mW nm-1 cm-2	no_bcodmo_term
lat	latitude, North is positive	decimal degrees	lat
lon	longitude, east is positive	decimal degrees	lon
buoy_id	buoy identification number		no_bcodmo_term

Database

Contribute Data

Dataset: buoy_radiometer
Deployment: LMG0106

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: buoy_radiometerDeployment: LMG0106

Dataset acquisition description

Dataset Processing Description

Dataset: buoy_radiometer
Deployment: LMG0106